PUBLICATIONS (updated 3rd October 2008)
B1. J.G. Hartnett, M.E. Tobar, “Frequency-temperature
compensation techniques for high-Q microwave resonators,” invited
review paper in Frequency Measurement and Control:
Advanced Techniques and Future Trends, Editor: A.N. Luiten, Springer-Verlag
Topics in Applied Physics, Vol 79, pp. 67-91, 2001.
B2. J.G. Hartnett, M.E. Tobar, “Properties of Gravitational Waves in an
Expanding Universe,” invited chapter in Relativity: Modern
Large-Scale Spacetime Structure of the Cosmos, Editor: M. Carmeli, World
Scientific,
B3. J.G. Hartnett, “Spiral Galaxy Rotation Curves in the Brane World
Theory in Five Dimensions,” invited chapter in Relativity: Modern
Large-Scale Spacetime Structure of the Cosmos, Editor: M. Carmeli, World
Scientific,
B4. J.G. Hartnett and
Firmin Oliveira, “Testing CGR against High
Redshift Observations,” invited chapter in Relativity: Modern
Large-Scale Spacetime Structure of the Cosmos, Editor: M. Carmeli, World
Scientific, Singapore, Chapter 13, pp. 343-361, 2008.
B5. J.G. Hartnett, “Extending the Hubble Diagram to Higher Redshifts in
CGR,” invited chapter in
Relativity: Modern Large-Scale Spacetime
Structure of the Cosmos, Editor: M. Carmeli, World Scientific,
B6. J.G. Hartnett, “Spheroidal and Elliptical Galaxy Velocity Dispersion from
CGR,” invited chapter in
Relativity: Modern Large-Scale Spacetime
Structure of the Cosmos, Editor: M. Carmeli, World Scientific,
Singapore, Appendix C, pp. 409-420, 2008.
J1. J.G. Hartnett, M.E. Tobar, A.G. Mann,
J. Krupka, E.N. Ivanov, “Temperature Dependence of Ti3+ doped
sapphire whispering gallery mode resonator,” Electron. Let, vol 34, no2,
pp. 195-196, 1998.
J2. M.E. Tobar, J.
Krupka, J.G. Hartnett, E.N. Ivanov,
RA Woode, “High-Q sapphire-rutile frequency-temperature compensated
microwave dielectric resonators,” IEEE Trans. on UFFC, vol. 45, no. 3,
pp. 830-836, 1998.
J3. J.G. Hartnett, M.E. Tobar, A.G. Mann,
E.N. Ivanov, J. Krupka, R. Geyer, “Frequency-temperature compensation in
Ti3+ and Ti4+ doped sapphire whispering gallery mode
resonators,” IEEE Trans. on UFFC, vol 46, no 4,
1999, pp 993-999
J4. M.E.
Tobar, J.G. Hartnett, P. Blondy, J. Krupka, E.N. Ivanov, P. Guillon, “Design of high-Q
frequency-temperature compensated dielectric resonators”, Electron.
Letters, vol 35, no 4, pp.303-305,
1999.
J5. J. Krupka,
K. Derzakowski, M.E. Tobar, J.G.
Hartnett, R.G. Geyer, “Complex permittivity of some ultralow loss
dielectric crystals at cryogenic temperatures”, Meas. Sci. Technol., vol
10, no 4, pp. 387-392, 1999.
J6. R. Ratheesh, M.T. Sebastian, M.E. Tobar, J.G. Hartnett, D.G. Blair,
"Whispering gallery mode microwave characterisation of Ba(Mg,Ta)O
dielectric resonators", J. Phys. D: Appl. Phys., vol. 32, pp. 2821-2826,
1999.
J7. M.E. Tobar, J.G. Hartnett,
E.N. Ivanov, D. Cros, P. Blondy, P. Guillon, “Cryogenically cooled
sapphire-rutile dielectric resonator for ultra-high frequency stable
oscillators for terrestrial and space applications”, Special Issue
on “Microwave and Communications Application at Low Temperatures”
for MTT, vol. 48,no 7,pp.1265-1269, 2000.
J8. J.G. Hartnett, M.E.
Tobar, E.N. Ivanov and D. Cros, “High-Q frequency-temperature compensated
sapphire/rutile resonator”, Electronics Letters, vol. 36, no. 8, pp.
726-727, April, 2000
J9. J.G. Hartnett, E.N.
Ivanov, M.E. Tobar, “Microwave secondary frequency standards: Stability limits due to intrinsic
fluctuations in frequency discriminator”, Microwave and Guided Wave
Letters, vol. 10, no. 4, pp. 328-330, 2000.
J10. E.N. Ivanov, J.G. Hartnett,
M.E. Tobar, “Cryogenic microwave amplifiers for precision
measurements”, Trans. UFFC, vol. 47, no. 6, pp. 1273-1274, 2000.
J11. R. Ratheesh, M.T. Sebastian, P. Mohanan, M.E. Tobar, J. Hartnett, R. Woode, D.G. Blair,
“Microwave characterisation of BaCe2Ti5O15
and Ba5Nb4O15 ceramic dielectric resonators
using whispering gallery mode method”, Materials Letters, vol 45, no 5,
pp. 279-285, 2000.
J12. M.E.
Tobar, J.G. Hartnett, E.N. Ivanov,
D. Cros, P. Blondy, P. Guillon, “Analysis of the rutile-ring method of
frequency temperature compensating a high-Q whispering gallery sapphire
resonator”, Trans. UFFC, vol. 48,
no. 3, pp. 812-820, 2001.
J13. J.G. Hartnett, M.E. Tobar, J. Krupka,
“Complex paramagnetic susceptibility in titanium doped sapphire”, J.
Phys. D: Applied Phys., vol. 34, pp. 959-967, 2001
J14. M.E.
Tobar, J.G. Hartnett, E.N. Ivanov,
D. Cros, P. Blondy “Whispering gallery method of measuring complex
permittivity in highly anisotropic materials: Discovery of a new type of mode
in anisotropic dielectric resonators”, IEEE Trans. Instrum. & Meas.,
vol. 50, no. 2, pp. 522-525, 2001.
J15. J.G. Hartnett, M.E. Tobar, E.N. Ivanov,
“Novel interferometric frequency discriminators for low noise microwave
applications”, IEEE Trans. UFFC, vol. 48, no. 3, pp. 743-749, 2001.
J16. M.E.
Tobar, E.N. Ivanov, J.G. Hartnett,
D. Cros, P. Bilski, “Design of a cryogenic dual-mode resonator for a
fly-wheel oscillator for a cesium frequency standard,” IEEE Trans. UFFC, vol. 48, no. 3, pp. 812-820, 2001.
J17. J.G. Hartnett, M.E. Tobar, E.N. Ivanov,
P. Bilski, “Temperature fluctuations in a solid-nitrogen cooled secondary
frequency standard”, Cryogenics, vol. 42, no. 1, pp. 42-48, 2002.
J18. M.E. Tobar, J.G. Hartnett, J.D. Anstie, “Proposal for a new Michelson-Morley
experiment using a single whispering spherical mode resonator”, Physics
Review A 300, pp. 33-39, 2002.
J19. M.E. Tobar, E.N. Ivanov, C.R. Locke, J.G. Hartnett, D. Cros, “Cryogenic dual-mode resonator for a
fly-wheel oscillator for a caesium frequency standard,” IEEE Trans. UFFC
vol. 49 No. 10, pp 1349-1355, 2002.
J20. J.G. Hartnett, A.N. Luiten, J. Krupka,
M.E. Tobar, P. Bilski, “Influence of paramagnetic chromium ions in
crystalline YAG at microwave frequencies”, J. Phys. D: Appl. Physics,
vol. 35, pp1459-1466, 2002.
J21. J.G. Hartnett, M.E. Tobar, D. Cros, P.
Guillon, J. Krupka, "High Q-factor Bragg reflection sapphire-loaded cavity
TE01d mode resonator", IEEE Trans.UFFC, vol 49, no. 12, pp
1628 –1634, 2002.
J22. M.E.
Tobar, E.N. Ivanov, C.R. Locke, J.G.
Hartnett, "Difference frequency technique to achieve
frequency-temperature compensation in whispering-gallery sapphire
resonator-oscillator", Electron. Lett. vol. 38, no. 17, August 15, pp
948-950, 2002.
J23. M.E. Tobar, E.N.
Ivanov, C.R. Locke, J.G. Hartnett,
D. Cros, “Improving the frequency stability of microwave oscillators by
utilizing the dual-mode sapphire-loaded cavity resonator”, Meas. Sci.
Technol., vol. 13, No. 8, pp 1284-1288, 2002.
J24. M.E. Tobar, G.L. Hamilton, E.N. Ivanov, J.G. Hartnett, "New method to
build a high stability sapphire oscillator from the temperature compensation of
the difference frequency between modes of orthogonal polarization", IEEE
Trans. UFFC, Vol. 50, No.3, pp.214-219, 2003.
J25. J.D. Anstie, J.G. Hartnett, M.E. Tobar, J.
Winterflood, D. Cros and J. Krupka, “Characterization of a spherically
symmetric fused-silica-loaded cavity microwave resonator”, Meas. Sci.
Technol., vol. 14, No. 3, pp 286-293, 2003
J26. M.E. Tobar, J.G. Hartnett,
“Proposal for a new test of the time
independence of the fine structure constant, a, using orthogonally polarised whispering gallery modes in a
single sapphire resonator”, Phys. Rev. D, 67, 062001, 2003
J27. M.E. Tobar, C.R.
Locke, E.N. Ivanov, J.G. Hartnett, O.
Piquet, D. Cros, "High-Q factor frequency-temperature compensated sapphire
Bragg distributed resonator", Electronics Letters, Vol. 39, No 3,
pp 293-295, 2003.
J28. K. Watabe,
S. Ohshima, T. Ikegami, J.G. Hartnett,
“Tunable double-sapphire-loaded microwave cavity with high-Q
factor”, IEICE Trans. Electron., Vol E86-C, No 7 July, pp 1393-1395,
2003.
J29. M.E. Tobar, D. Cros, J.G. Hartnett, P. Blondy, P. Guillon, “Simple design rules for
optimal design of dielectric temperature-compensated sapphire resonators”, IEEE Trans. UFFC, Vol. 50,
No 9, pp.1204-1206, September 2003
J30. M.E. Tobar, J.D. Anstie, J.G. Hartnett, “High-Q whispering modes in empty spherical
cavity resonators”,
IEEE Trans. UFFC, Vol. 50, No 11, pp.1407-1413, 2003
J31. M.E. Tobar, G.L. Hamilton, J.G. Hartnett, E.N. Ivanov, D. C. Dros,
P. Guillon, “The dual-mode
frequency-locked technique for the characterization of the temperature
coefficient of permittivity of anisotropic materials”, Meas. Sci. Tech.
Vol 15, No 1, pp 29 -34, 2004
J32. J.G.
Hartnett, M.E. Tobar, J. Krupka, “The dependence of the permittivity
of sapphire to thermal deformation at cryogenic temperatures”, Meas. Sci. Tech. Vol 15, No 1, pp 203 - 210, 2004
J33. J.G.
Hartnett, P.Y Bourgeois, J.D. Anstie, M.E. Tobar, N. Bazin, E.N. Ivanov, D.
Cros, V. Giordano, Y. Kersalé, “High-Q frequency-temperature compensated
solid-nitrogen-cooled resonator-oscillators: first results”, Electron.
Lett., vol.40, no. 1, pp. 41-42, 2004.
J34. J.G. Hartnett, A.C. Fowler, M.E. Tobar,
J. Krupka, “The microwave characterization of single crystal Lithium and
Calcium Fluoride at cryogenic temperatures”, Trans on UFFC, Vol 51, No.4,
pp. 380-385, April 2004.
J35. V. Giordano, J.G.
Hartnett, J. Krupka, Y. Kersalé, P.Y. Bourgeois, M.E. Tobar,
“Whispering gallery mode technique applied to the measurement of the
dielectric properties of Langasite between 4 K and 300 K”, Trans on UFFC, Vol. 51, No. 5, pp
484-490, 2004
J36. M.V. Jacob, J.G. Hartnett,
J. Mazierska, V. Giordano, J. Krupka, M.E. Tobar, “Temperature dependence
of permittivity and loss tangent of lithium tantalate at microwave
frequencies”, Trans on MTT, Vol 52, No. 2, pp 536–541, 2004.
J37. M.E. Tobar, J-M. Le Floch, D. Cros, J.
Krupka, J.D. Anstie, J.G. Hartnett, “Spherical Bragg reflector
resonators”, Trans on UFFC, Vol 51, No.9, pp. 1054-1059, September 2004.
J38. K. Watabe, Y. Koga, S. Ohshima, T. Ikegami, J.G. Hartnett, “Cryogenic
whispering gallery sapphire oscillator for microwave frequency standard
applications”, IEICE Trans. Electron., Vol E87-C, No 9 Sept, pp
1640-1642, 2004.
J39. J.G. Hartnett, “Carmeli’s accelerating universe is
spatially flat without dark matter”, Int. J. Theor. Phys., Vol. 44, no.
4, April, pp. 485-492, 2005.
J40. M.E. Tobar, P.
Wolf, A. Fowler, J.G. Hartnett,
“New methods of testing Lorentz violation in
electrodynamics”,
Phys. Rev. D, 71, 025004,
2005.
J41. J.G. Hartnett, “The Carmeli metric correctly describes spiral
galaxy rotation curves”, Int. J. Theor. Phys., vol. 44, no. 3, March, pp.
349-362, 2005.
J42. M.E. Tobar, J-M. le Floch, D. Cros, J.G. Hartnett, “Distributed Bragg reflector resonators with
cylindrical symmetry and extremely high Q-factors,” IEEE Trans. UFFC,
vol. 52, no. 1, pp. 17-26, 2005.
J43. J.G. Hartnett, M.E. Tobar, P. Stanwix, T. Morikawa, D. Cros, O. Piquet, “Designs
of a Microwave TE011 Mode Cavity for a Space Borne H-Maser”,
IEEE Trans on UFFC, vol. 52, no. 10,
pp.1638-1643, 2005
J44. J.
Krupka, M.E. Tobar, J.G. Hartnett, D. Cros, J-M Le Floch,
"Extremely High-Q Factor Dielectric
Resonators for Millimeter-Wave Applications” IEEE Trans on MTT, vol. 53,
no. 2, pp.702-712, 2005
J45. N. Boubekeur, J.G. Hartnett,
M.E. Tobar, N. Bazin, Y. Kersalé, V.
Giordano, “Frequency
stability of Ti3+ doped whispering gallery mode sapphire resonator oscillator
at 34K” Electron. Letters, vol. 41 no. 9, pp. 534-535, 2005
J46. K. Watabe, J.G. Hartnett, G. Santarelli, S. Yanagimachi, T. Ikegami, S.
Ohshima, “Microwave local oscillator for a Cesium frequency
standard synthesized from a Cryogenic Sapphire Oscillator”, Japanese J. Appl. Phys., vol. 44, no. 5A, pp.3283-3286,
2005
J47. P.L. Stanwix, M.E. Tobar, M. Susli, C.R.
Locke, E.N. Ivanov, J. Winterflood, J.G.
Hartnett, F. van Kann, “Rotating Michelson-Morley based dual
cavity cryogenic sapphire oscillator,” in Annales Françaises des microtechniques et de
Chronométrie (AFMC),
vol 54, pp.77-81, 2005
J48. J.G.
Hartnett, M.E. Tobar, E.N. Ivanov and J. Krupka, “Room temperature
measurement of the anisotropic loss tangent of sapphire using the
whispering-gallery-mode technique”, IEEE Trans on UFFC, vol. 53
no. 1, pp.34-38, 2006
J49. J.D.
Anstie, J.G. Hartnett, M.E. Tobar, E.N. Ivanov, P. Stanwix, “Second generation 50K dual-mode
sapphire oscillator”, IEEE Trans on UFFC, vol. 53 no. 2, pp.284-288, 2006.
J50. J.A.
J51. M. Carmeli, J.G. Hartnett,
F.J. Oliveira, “The cosmic time in terms of the redshift”, Found.
Phys. Lett. vol. 19, no. 3, June, pp. 277 – 283, 2006
J52. J.G. Hartnett, “The distance modulus determined
from Carmeli's cosmology fits the accelerating universe data of the
high-redshift type Ia supernovae without dark matter.” Found. Phys. vol 36. no. 6, pp. 839-861,
June 2006. arxiv: astro-ph/0501526
J53. M. Carmeli, J.G. Hartnett, F.J. Oliveira, “On the anomalous acceleration of Pioneer spacecraft”, Int. J. Theor. Phys., vol. 45. no. 6, pp.1074-1078, 2006.
J54. J.G. Hartnett,
“Spiral galaxy rotation curves determined from Carmelian general
relativity”, Int. J. Theor. Phys., vol. 45, no. 11, pp.2118-2136,
November 2006. arxiv: astro-ph/0511756
J55. J.G. Hartnett,
M.E. Tobar, “Properties of gravitational waves in Cosmological general
relativity”, Int. J. Theor. Phys., vol. 45, no. 11, pp. 2181-2190
November 2006. arxiv: gr-qc/0603067
J56. K. Watabe, J.G. Hartnett, C.R. Locke, G. Santarelli, S. Yanagimachi, T.
Shimazaki, T. Ikegami, S. Ohshima, “Reference signal synthesized from
a Cryogenic Sapphire Oscillator improved by power control servo”,
Japanese J. Appl. Phys., vol. 45, no. 4A, pp.2827-2829, 2006
J57. F.J. Oliveira, J.G. Hartnett, “Carmeli's cosmology fits data for an
accelerating and decelerating universe without dark matter or dark
energy”, Found. Phys. Lett. Vol. 19, No. 6, pp. 519-535, November
2006. arxiv: astro-ph/0603500
J58. J-M. LeFloch, J.D. Anstie, M.E. Tobar, J.G. Hartnett, P-Y Bourgeois, D. Cros, “Whispering modes in anisotropic and
isotropic dielectric spherical resonators”, Phys. Lett A vol. 359, pp.
1-7, 2006.
J59. M.V. Jacob, J.G. Hartnett, J. Mazierska, J. Krupka, M.E. Tobar,
“Dielectric Characterisation of Barium Fluoride at Cryogenic Temperatures
using a TE011 and quasi TE0mn Mode Dielectric
Resonators”, Cryogenics, 46 730–735, 2006.
J60. M.E. Tobar, E.N. Ivanov,
C.R. Locke, P.L. Stanwix, J.G. Hartnett,
A.N. Luiten, R.B. Warrington, P.T.H. Fisk,
“Long term operation and performance of cryogenic sapphire
oscillators,” IEEE Trans. UFFC, vol 53 no. 12, pp.2386-2393, 2006.
J61. J.G.
Hartnett, C.R. Locke, E.N. Ivanov, M.E. Tobar, P.L. Stanwix, “Cryogenic sapphire oscillator with
exceptionally high long-term frequency stability”, Appl. Phys.
Lett. Vol. 89 no. 20 203513, 2006. arxiv.org:
physics/0608124
J62. K. Watabe, J.G. Hartnett, C.R. Locke, G. Santarelli, S. Yanagimachi, T.
Shimazaki, T. Ikegami and S. Ohshima, “Short term frequency stability
tests of two cryogenic sapphire oscillators”, Jap. J. Appl. Phys. Vol.
45, No. 12, pp. 9234–9237, 2006.
J63. A.C. Fowler, M.E. Tobar, C.R. Locke, E.N.
Ivanov, J.G. Hartnett, J.D. Anstie,
D. Cros, “Exciting travelling waves in high Q structures using
microstrip”, J. European Ceramic Society, Vol 27,
Issue: 8-9
Special Issue: Sp. Iss. SI,
pp. 3023–3026, 2007.
J64. J.G.
Hartnett, J-M.
J65. K. Watabe, H.
Inaba, K. Okumura, F.
Hong, J.G. Hartnett, C.R.
Locke, G. Santarelli, S.
Yanagimachi, K. Minoshima, T.
Ikegami, A. Onae, S. Ohshima and H. Matsumoto, “Optical frequency synthesis from a cryogenic sapphire oscillator using a fiber-based frequency comb”, CPEM Special Issue IEEE Trans on Instr. Meas., vol. 56, no. 2,
pp. 632-636, 2007.
J66. J.G. Hartnett, F.J. Oliveira, “Luminosity
distance, angular size and surface brightness in Cosmological General
Relativity”, Found. Phys. Vol 37, No. 3, pp. 446-454, 2007.
J67. J.G.
Hartnett, M.E. Tobar, J. Krupka, "Dependence of the dielectric
permittivity of single-crystal quartz on thermal deformation at cryogenic
temperatures", J. Appl. Physics, Vol. 102, No. 7, 074103, 2007
J68. K. Benmessai, P-Y.
Bourgeois, Y. Kersale, N.
J69. J.G. Hartnett,
“Spheroidal and elliptical galaxy radial velocity dispersion determined
from Cosmological General Relativity,” Int. J. Theor. Phys. Vol. 47, No.
5, pp. 1252-1260, 2008.
J70. J.G. Hartnett, “Extending the redshift-distance relation
in Cosmological General Relativity to higher redshifts,” Found. Phys. Vol. 38, No. 3, pp.201-215,
March, 2008.
J71. C.R. Locke, E.N. Ivanov, J.G. Hartnett, P.L. Stanwix, M.E.
Tobar, “Invited Article: Design techniques and noise properties of
secondary frequency standards based on cryogenically cooled sapphire dielectric
resonators,” Rev. Sci. Instruments, Vol. 79, No. 5, 051301, 2008
J72. J. Krupka, D. Mouneyrac, J.G. Hartnett, M.E. Tobar, “Use of Whispering-Gallery Modes and Quasi-TE0np Modes for Broadband
Characterization of Bulk Gallium Arsenide and Gallium Phosphide Samples,” IEEE Trans. on MTT, Vol. 56,
No. 5, pp.1201-1206, 2008
J73. K. Watabe, S. Yanagimachi, A. Takamizawa, T.
Ikegami, S. Ohshima, G. Santarelli, C.R. Locke, J.G. Hartnett, “Cryogenic-sapphire-oscillator-based
reference signal at 1 GHz with 10-15 level
instability”, Jap. J. Appl. Physics, Vol. 47, No. 9, pp.
7390–7392, 2008
J74. J.G.
Hartnett, D. Mouneyrac, J-M Le Floch, J. Krupka, M.E. Tobar, D. Cros,
“Modified permittivity observed in bulk Gallium Arsenide and Gallium
Phosphide samples at 50 K using the Whispering Gallery mode method,”
Appl. Phys. Lett. 93,
062105, 2008
J75.
J.G.
Hartnett, K. Hirano, “Galaxy redshift
abundance periodicity from Fourier analysis of number counts N(z) using SDSS
and 2dF GRS galaxy surveys,“ Astrophysics and Space Science, in press, 2008, DOI
10.1007/s10509-008-9906-4
J76. J.G. Hartnett, “Electromagnetic waves in an expanding 5D
universe,” New
Advances in Physics, in press, 2008
J77. M.B. Bell, S.P. Comeau, J.G. Hartnett, “Evidence that the
peaks and valleys in the number distribution of SDSS quasar redshifts are due
to a selection effect and not to quantization in an intrinsic component,”
Ap. J. submitted, 2008
CONFERENCE
PUBLICATIONS
C1. M.E. Tobar,
J. Krupka, J.G. Hartnett, E.N.
Ivanov, R.A. Woode, “Sapphire-rutile frequency-temperature compensated whispering
gallery microwave resonators.” Proc. 1997 Int. Freq. Contr. Symp., pp
1000-1008.
C2. M.E.
Tobar, J.G. Hartnett, J. Krupka,
A.G. Mann, E.N. Ivanov, “New frequency-temperature compensation techniques
for high-Q sapphire resonators,” Proc. 12th European Frequency and Time
Forum, Warsaw, Poland, 1998, pp 103-107
C3. R.
Ratheesh, M.T. Sebastian, M.E. Tobar, J.G.
Hartnett, D.G. Blair, “Microwave characterisation of Ba(Mg1/3,Ta2/3)O3
dielectric ceramics using Whispering Gallery Mode method,” Proc. 12th
European Frequency and Time Forum, Warsaw, Poland, 1998.
C4. M.E.
Tobar, J.G. Hartnett, J. Krupka,
A.G. Mann, E.N. Ivanov, R.G. Geyer, “Measurements of doped and composite
low loss single crystal dielectric resonators for secondary frequency
standards,” invited paper abstract published in Proc. 1998 PIERS,
Nantes France, 1998.
C5. R.
Ratheesh, H. Sreemoolanadhan, M.T.Sebastian, M.E.Tobar, J.G. Hartnett, D.G.Blair, “Whispering Gallery mode microwave
characterisation of Ba2Nd4Ti5O18
dielectric resonators,” Advances in Microwaves and Lightwaves, Editor
E.K. Sharma, Allied Publishers,
C6. J.G. Hartnett, M.E. Tobar, A.G. Mann,
E.N. Ivanov, J. Krupka, “Frequency-temperature compensation in Ti3+
and Ti4+ doped sapphire whispering gallery mode resonators,”
Proc. Int. Freq. Contr. Symp, pp 512-517, 1998.
C7. J.G. Hartnett, M.E. Tobar, A.G. Mann,
Eugene N. Ivanov, J. Krupka, “Paramagnetic temperature compensation of modal
Frequencies in Ti3+ and Ti4+ doped Sapphire Resonators”,
Abstract published in Proc. 13th National Congress of the Australian
Institute of Physics, Fremantle, W.
C8. J.G. Hartnett, M.E. Tobar, E.N. Ivanov,
A.G. Mann, J. Krupka, S.N. Jacobsen, L. Madsen, U. Helmersson,
“Electromagnetic frequency-temperature compensation techniques for high-Q
sapphire resonators”, Proc. Asia-Pacific
Microwave Conference, Yokohama, Japan, pp. 1367-1370, 1998
C9. M.E. Tobar, D. Cros, P. Blondy, J.G. Hartnett, P. Guillon,
“Finite element realization of ultra-high quality factor
frequency-temperature compensated sapphire-rutile whispering Gallery mode
resonators”, Int. Microwave Symp. Dig., vol. 2, pp. 1323-1326, 1999
C10. M.E. Tobar, J. Krupka, J.G. Hartnett, R.G. Geyer, E.N. Ivanov,
“Measurements of low-loss crystalline materials for high-Q temperature
stable resonator applications”, Proc. Joint Meeting European Frequency & Time Forum – IEEE International Frequency Control
Symposium, Besançon, France, pp
573-576, 1999.
C11. J.G. Hartnett, E.N. Ivanov, M.E. Tobar,
“A study of the frequency stability limits of oscillators based on
sapphire dielectric resonators”, Proc. Joint Meeting , European Frequency & Time Forum – IEEE International Frequency Control
Symposium, Besançon, France, pp 1150–1153, 1999.
C12. M.E.
Tobar, J.G. Hartnett, E.N. Ivanov,
“Sapphire-rutile secondary frequency standard,” Invited paper,
in Proc. of the 26th URSI General Assembly, p. 16., 1999.
C13. M.E.
Tobar, J.G. Hartnett, E.N. Ivanov,
D. Cros, P. Blondy, P. Guillon, “Novel design of high-Q whispering
gallery sapphire-rutile dielectric resonators for a secondary frequency
standard”, Proc. European Frequency & Time Forum, Torino, Italy, pp.
93-97, March 2000.
C14. J.G. Hartnett, M.E. Tobar, E.N. Ivanov, ”A novel
‘bi-directional’ interferometric discriminator for low noise
microwave applications”, Proc. European Frequency & Time Forum,
Torino, Italy, pp. 129-132, March 2000
C15. J.G. Hartnett, M.E. Tobar, E.N. Ivanov, “A bi-directional
interferometric frequency discriminator for low noise microwave
applications”, Proc. Conference on Precision Electromagnetic Measurement,
Sydney, pp. 48-49, May 2000
C16. M.E. Tobar, J.G. Hartnett, E.N. Ivanov, D. Cros, P.
Blondy “Whispering gallery method of measuring complex permittivity in
highly anisotropic materials”, Proc. Conference on Precision
Electromagnetic Measurement, Sydney, pp. 459-460, May
2000.
C17. M.E. Tobar, J.G. Hartnett, E.N. Ivanov, D. Cros, P.
Blondy, P. Guillon, “Analysis of rutile-ring method of frequency
temperature compensating a high-Q whispering gallery sapphire resonator”,
Proc. Int. Freq. Contr. Symp, Kansas City, Missouri, pp.
485-492, June 2000.
C18. D.
Cros, M.E. Tobar, G. Duchiron, P. Blondy, P. Guillon, J.G. Hartnett, “Design rules for dielectric temperature
compensated resonators,” Proc. 30th EuMC, pp. 263-265, Oct
2000.
C19. J.G. Hartnett, P. Bilski, M.E. Tobar, E.N. Ivanov,
“Temperature Stabilization of a Solid-Nitrogen-Cooled Secondary Frequency
Standard”, in proc. European Frequency and Time Forum, Neuchatel,
Switzerland, 2001.
C20. M.E. Tobar, E.N.
Ivanov, J.G. Hartnett, “Novel
Temperature Control of a Sapphire Loaded Cavity Oscillator from the Difference Frequency
of WGE and WGH Modes”, Proc. Int. Freq. Contr. Symp, Seattle, Washington,
pp. 699-702, June 2001.
C21. M.E. Tobar, J.G. Hartnett,
E.N. Ivanov, D. Cros, “Design of a Cryogenic Dual-Mode Resonator for a
Fly-Wheel Oscillator for a Cesium Frequency Standard”, Proc. Int. Freq.
Contr. Symp, Seattle, Washington, pp. 715-719, June
2001.
C22. M.E.
Tobar, E.N. Ivanov, J.G. Hartnett,
D. Cros, “High-Q frequency stable dual-mode whispering gallery sapphire
resonator,” in proc. IEEE Int. Microwave Symp. Digest, pp. 205-208, 2001.
C23. M.E.
Tobar, J.G. Hartnett, E.N. Ivanov,
C.R. Locke, A.N. Luiten, Ch. Salomon,
N. Dimarcq, M Abgrall, A. Clairon, P. Laurent, P. Lemonde, G. Santarelli, P.
Uhrich, L.G. Bernier, G. Busca, A. Jornod, P. Thomann, E. Samain, P. Wolf, F.
Gonzalez, Ph. Guillemot, S. Leon, F Nouel, Ch Sirmain, S Feltham, “The
atomic clock ensemble in space mission on board the international space
station: description of the project and Australian participation”, to be
published in Proc. 2001 National Space Science Workshop, Sydney Australia.
C24. J.G. Hartnett, M.E. Tobar, E.N. Ivanov,
“High resolution room-temperature determination of the loss tangent of
sapphire using the whispering-gallery-mode method”, abstract in Proc.
2001 Asia-Pacific Radio Science Conference,
C25. M.E.
Tobar, J.G. Hartnett, J. Anstie,
“New Michelson Morely experiment based on high-Q spherical
resonators”, Proc. 6th Symposium on Frequency Standards and
Metrology, World Scientific, St. Andrews, Scotland, pp 261-269, 2001
C26. J.G. Hartnett, M.E. Tobar, E.N. Ivanov,
C.R. Locke, “Current status of cryogenic (50 K – 80 K) secondary
frequency standards for flywheels of atomic fountain clocks”, Proc. 6th
Symposium on Frequency Standards and Metrology, World Scientific, St. Andrews,
Scotland, pp 313-320, 2001
C27. V.
Giordano, J.G. Hartnett, J. Krupka,
Y. Kersalé, P.Y. Bourgeois, M.E. Tobar, “Dielectric properties of
Langasite measured with the whispering gallery mode technique”, in Proc.
EFTF , Leningrad Russia, 2002.
C28. J.G.
Hartnett, A.N. Luiten, J. Krupka, M.E. Tobar, P. Bilski, "Microwave
properties of ultra-low loss chromium-doped YAG," in Proc. of 2002
Workshop on the Application of Radio Science, Feb 2002, Sydney, Australia.
C29. M.E.
Tobar, J.D. Anstie, J.G. Hartnett,
"Michelson Morley Experiment using Spherical Resonators," in Proc. of
2002 Workshop on the Application of Radio Science, Feb 2002, Sydney, Australia.
C30. M.E. Tobar, J.G. Hartnett, E.N. Ivanov, C.R. Locke, AN. Luiten, Ch. Salomon, N.
Dimarcq, M. Abgrall, A.Clairon, P. Laurent, P. Lemonde, G. Santarelli, P.
Uhrich, L.G. Bernier, G. Busca, A. Jornod, P. Thomann, E. Samain, P.Wolf, F.
Gonzalez, Ph Guillemot, S. Leon, F. Nouel, Ch Sirmain, S. Feltham,
"Microwave Frequency Standards: Tools for Testing the Foundations of
Physics in the Laboratory and on Board the International Space Station," Invited
paper in the Proc. of 2002 Workshop on the Application of Radio Science,
Feb 2002, Sydney, Australia.
C31. J.G. Hartnett, M.E. Tobar, D. Cros, J.
Krupka, P. Guillon, “Exceptionally-enhanced Q-factor
sapphire-loaded-cavity TE01d mode resonators,”
in Proc. 2002 IEEE International Frequency Control Symposium, pp. 559 –564, 2002
C32. M.E.
Tobar, G.L. Hamilton E.N Ivanov, J.G.
Hartnett, C.R. Locke, “Temperature compensation of the difference
frequency between modes of orthogonal polarization in anisotropic dielectric
resonators,” in Proc. 2002 IEEE International Frequency Control
Symposium, pp.
553 –558, 2002
C33. M.E.
Tobar, J.D. Anstie, J.G. Hartnett,
“High-Q
whispering modes in spherical cavity resonators,”
in Proc. 2002 IEEE International
Frequency Control Symposium, pp. 548
–552, 2002
C34. C.R. Locke, M.E.Tobar, G.L. Hamilton, E.N. Ivanov, J.G. Hartnett, “Improving the
frequency stability of microwave oscillators by utilizing the temperature
compensated difference frequency of a dual mode sapphire loaded cavity
resonator”, in the Proc. of the 27th Triennial General Assembly of the
International Union of Radio Science, Maastricht, The Netherlands, August,
2002.
C35. M.E. Tobar, J.G. Hartnett, J.D. Anstie, "New
ultra-sensitive Michelson-Morley experiment", in Proc. IEEE Conf. on
Precision Electromagnetic Measurement, Ottawa, pp. 94-95, June 2002.
C36. M.E. Tobar, J.G. Hartnett, "Test for the time
independence of the Fine Structure Constant,using
cryogenic sapphire resonators at microwave frequencies", in Proc. IEEE
Conf. on Precision Electromagnetic Measurement, Ottawa, pp. 320, June 2002.
C37. C.R. Locke, M.E. Tobar, E.N.
Ivanov, J.G. Hartnett, O Piquet, D
Cros, "Measurements of a High-Q TE0,1,d frequency-temperature compensated sapphire Bragg distributed
resonator”, in Proc. IEEE Conf. on Precision Electromagnetic Measurement,
Ottawa, pp. 582-583, June 2002.
C38. J.G.
Hartnett, J.D. Anstie, M.E. Tobar, E.N. Ivanov, “The progress in the
development of a solid nitrogen cooled dual-mode
frequency-temperature-compensated sapphire-resonator oscillator”, in Proc.of Joint Meeting European Frequency & Time
Forum – IEEE International Frequency
Control Symposium, Tampa,
Florida, pp. 376-379, May, 2003
C39. O. Piquet, D. Cros, S. Verdeyme, M.E. Tobar, J.G. Hartnett, P.Y. Bourgeois, Y.
Kersalé, V. Giordano, M. Chaubet, “Realization of high-Q frequency-temperature
compensated resonator with spurious mode free region”, in Proc.of Joint Meeting
European Frequency & Time Forum
– IEEE International Frequency Control Symposium, Tampa, Florida, pp. 748-751, May, 2003
C40. M.E. Tobar , G.L. Hamilton, J.G. Hartnett, E.N. Ivanov, D. Cros, P. Guillon, “Accurate characterization of the temperature
coefficient of permittivity of sapphire utilizing the dual-mode frequency
locked technique”, in Proc.of
Joint Meeting European Frequency & Time
Forum – IEEE International Frequency
Control Symposium, Tampa,
Florida, pp. 365-370, May, 2003
C41. J.G. Hartnett, A. Fowler, M. E. Tobar, J. Krupka, “Dielectric properties of
single crystal fluorides at microwave frequencies and cryogenic temperatures”, in Proc.of Joint Meeting European Frequency & Time
Forum – IEEE International Frequency
Control Symposium, Tampa,
Florida, pp. 391-394, May, 2003
C42. J.D. Anstie, M.E. Tobar, J.G. Hartnett, D. Cros, J. Krupka, P. Guillon, “The study of whispering gallery
modes in anisotropic and isotropic dielectric spherical resonators”, in Proc.of Joint Meeting European Frequency & Time
Forum – IEEE International Frequency
Control Symposium, Tampa,
Florida, pp. 380-383, May, 2003
C43. M.E. Tobar, J.G. Hartnett, “The dependence of phonon and paramagnetic
resonances on the fine structure constant in sapphire and the possibility of a
test of time dependence”, in Proc.of Joint Meeting European Frequency & Time Forum – IEEE International Frequency Control Symposium, Tampa, Florida, pp. 211-216a, May, 2003
C44. J. Krupka, J. Mazierska, M. Jacob, J. Hartnett and M. Tobar: “Recent Advances in Measurements of
Permittivity and Dielectric Losses at Microwave Frequencies”, Invited
Paper, SPIE Proceedings of the 9th
ISMOT Conf., 2003
C44. K. Watabe, Y. Koga, S. Ohshima, T. Ikegami, J.G. Hartnett, “Cryogenic whispering gallery sapphire
oscillator using 4 K pulse-tube cryocooler”, in Proc.of Joint Meeting European Frequency & Time
Forum – IEEE International Frequency Control
Symposium, Tampa, Florida, pp.
388-390, May, 2003
C45. P.Y. Bourgeois, Y. Kersalé , N. Bazin, J.G. Hartnett, M. Chaubet, and V.
Giordano, “Progress
in the building of sapphire-helium clock at LPMO”, in Proc.of Joint
Meeting European Frequency & Time
Forum – IEEE International Frequency
Control Symposium, Tampa,
Florida, pp. 355-359, May, 2003
C47. J.G. Hartnett, “Carmeli’s cosmology: The universe is spatially
flat without dark matter”, published by Springer-Verlag in the
Proceedings of the 6th Symposium on the Frontiers of Fundamental
Physics, Udine, Italy, pp. 21-28, 2004.
C48. P.L Stanwix, M.E. Tobar, J.
Winterflood, E.N. Ivanov, M. Susli, J.G.
Hartnett, F. van Kann, P. Wolf,
“Rotating Michelson-Morley experiment based on a dual
cavity cryogenic sapphire oscillator” Frequency Control Symposium and
Exposition, 2004. Proceedings of the 2004 IEEE International 23-27 Aug. 2004
pp.757 – 761
C49. J.G. Hartnett,
M.E. Tobar, P. Stanwix, T. Morikawa, D. Cros, O. Piquet, “Cavity designs for a
space hydrogen maser”, Frequency Control Symposium and
Exposition, 2004. Proceedings of the 2004 IEEE International 23-27 Aug. 2004
pp.608 – 612
C50. J.D. Anstie, J.G. Hartnett, M.E. Tobar, E.N. Ivanov,
P.L. Stanwix, “Evolution
of the UWA solid nitrogen dual mode sapphire oscillator, JULIA,” Frequency Control Symposium
and Exposition, 2004. Proceedings of the 2004 IEEE International 23-27 Aug.
2004 pp.386 - 389
C51. M.E. Tobar, J.G. Hartnett, J-M. le Floch, D. Cros,
“Cylindrical distributed Bragg reflector resonators with extremely high
Q-factors”, Frequency Control Symposium and Exposition, 2004. Proceedings
of the 2004 IEEE International 23-27 Aug. 2004 pp.257 - 265
C52.
K. Watabe, J.G. Hartnett, T. Ikegame, S. Ohshima,
“Development of cryogenic sapphire oscillator at NMIJ/AIST”, in
Proc of IEEE Conf. on Precision Electromagnetic Measurement, London,
pp.133-134, 2005
C53. P.L. Stanwix,
M.E. Tobar, M. Susli, C.R. Locke, E.N. Ivanov, J. Winterflood, J.G. Hartnett, F. van Kann, “Rotating
Michelson-Morley based dual cavity cryogenic sapphire oscillator,” in
Proc.of the Meeting European Frequency & Time Forum, Besançon, France,
March, 2005
C54.
J.G. Hartnett, “The distance modulus determined
from Carmeli’s cosmology fits the accelerating universe data of the
high-redshift type Ia supernovae without dark matter”, abstract published
in the Proceedings of the Australian
C55. A.C. Fowler, M.E. Tobar, C.R. Locke, E.N. Ivanov, J.G. Hartnett, J. Anstie, D. Cros,
“Exciting traveling waves in high Q structures using microstrip”, Frequency
Control Symposium and Exposition, 2005. Proceedings of the 2005 IEEE
International
C56. J.A.
C57. Y.
Kersale,
N. Boubekeur, J.G. Hartnett, M.E.
Tobar, N. Bazin, V. Giordano, “Titanium doped cryogenic sapphire resonator oscillators”,
Frequency
Control Symposium and Exposition, 2005. Proceedings of the 2005 IEEE
International
C58. M.E. Tobar, E.N. Ivanov,
C.R. Locke, P.L. Stanwix, J.G. Hartnett,
A.N. Luiten, R.B. Warrington, P.T.H. Fisk, M.A. Lawn, M.J. Wouters, S. Bize, G.
Santarelli, P. Wolf, A. Clairon, P. Guillemot, “Long
term operation, performance and applications of cryogenic sapphire
oscillators”, Frequency Control Symposium and Exposition, 2005. Proceedings of the
2005 IEEE International
C59. K. Watabe, J.G. Hartnett, C.R. Locke, G. Santarelli, S.
Yanagimachi1, T. Ikegame, S. Ohshima, “Progress in the development of
cryogenic sapphire resonator oscillator at NMIJ/AIST”, in Proc.of the
European Frequency & Time Forum, 2006
C60. K. Watabe, H. Inaba, F. Hong, J. G. Hartnett, C. R. Locke, G. Santarelli, S. Yanagimachi, T. Shimazaki,
T. Ikegami, A. Onae, S. Ohshima, and H. Matsumoto, “Up-conversion to
optical frequency from a Cryogenic Sapphire Oscillator using an optical
frequency comb”, in Proc of IEEE Conf. on Precision Electromagnetic
Measurement, Torino, Italy, 2006
C61. J.G. Hartnett, M.E. Tobar, E.N. Ivanov, J.D.
Anstie, C.R. Locke, A.N. Luiten, J.J. McFerran, R.B. Warrington, M.J. Wouters,
P.T.H. Fisk, D. Chambon, G. Santarelli,
“GPS Carrier Phase and TWSTFT comparisons of clock ensembles based at UWA
and NMI”, Proc. Workshop on the Application of Radio Science, Leura,
NSW, p. 24, Feb. 2006
C62. J.G. Hartnett, “Spiral galaxy rotation curves described using cosmological
general relativity”, in the Proceedings of the 8th
Symposium on the Frontiers of Fundamental Physics, Madrid, Spain, AIP Conf. Proc. 905, 27-29, 2007.
C63. J.G. Hartnett, M.E. Tobar, “Gravitational waves in
Cosmological General Relativity”, in the Proceedings of the 8th
Symposium on the Frontiers of Fundamental Physics, Madrid, Spain, AIP Conf. Proc. 905, 30-32, 2007.
C64 M.E. Tobar, P.L. Stanwix, A.C. Fowler, E.N.
Ivanov, J.G. Hartnett, C.R. Locke,
P. Wolf, “Using Precision Oscillators and Interferometers to
Test Fundamental Physics”, International
Frequency Control Symposium, IEEE, June, p. 681
– 684, 2006
C65. M.E. Tobar,
P.L. Stanwix, E.N. Ivanov, A.C. Fowler, J.G. Hartnett, J.M. le Floch, M. Miao, P. Wolf, 'Precision
Microwave Oscillators and Interferometers to Test Lorentz Invariance in
Electrodynamics', XLIInd Recontres de Moriand: Gravitational Waves and
Experimental Gravity, Vietnam, 1, pp. 227-234. 2007.
C66 P.-Y. Bourgeois, K. Benmessai, M. Oxborrow, M.E.
Tobar, N. Bazin, J. G. Hartnett, Y.
Kersale, V. Giordano, “The Fe3+:Al2O3
Whispering Gallery mode maser oscillator,” Frequency Control Symposium, 2007
Joint with the 21st European Frequency and Time Forum. IEEE International, May 29 2007-June 1, pp.1032 – 1040, 2007
C67. M.E. Tobar, P.L. Stanwix, E.N. Ivanov, A.C. Fowler, J.G. Hartnett, J-M le Floch, M.M. Miao, P. Wolf, “Precision
Microwave Oscillators and Interferometers to Test Lorentz Invariance in
Electrodynamics (an Update),” Frequency Control
Symposium, 2007 Joint with the 21st European Frequency and Time Forum. IEEE
International, May 29 2007-June 1, pp.350 – 354, 2007
C68. J.G. Hartnett,
J-M Le Floch, M.E. Tobar,J. Krupka, Jerzy; P-Y Bourgeois, “Anisotropic
paramagnetic susceptibility of crystalline ruby at cryogenic
temperatures,” Frequency
Control Symposium, 2007 Joint with the 21st European Frequency and Time Forum.
IEEE International
May 29 2007-June 1 pp. 666 – 671, 2007
C69. J.G.
Hartnett, C.R. Locke, E.N. Ivanov, M.E. Tobar, P.L. Stanwix, “Cryogenic
sapphire oscillator with exceptionally high long-term frequency
stability,” Frequency
Control Symposium, 2007 Joint with the 21st European Frequency and Time Forum.
IEEE International
May 29 2007-June 1, pp.1028 – 1031, 2007
C70. J.G. Hartnett, “The redshift-distance relation extended to
higher redshifts in Cosmological General Relativity,” in the
Proceedings of the 9th Symposium on the Frontiers of Fundamental
Physics, Udine, Italy, AIP
Conf. Proc. 1018, pp. 57-66,
2008.
C71. J.G. Hartnett, “Fourier analysis of the large scale spatial
distribution of galaxies in the universe,” in the
Proceedings of the 2nd Crisis in Cosmology Conference, Port Angeles, WA USA, in
press, 2008.
OTHER PAPERS
O1. P.Y. Bourgeois, Y. Kersalé, N. Boubekeur, N.
Bazin, J.G. Hartnett, S. Vives, C. Meunier,
M. Chaubet, V. Giordano, "Oscillateurs de référence à résonateur saphir
basse température : Etat d'avancement", Actes des 13 ême Journées
Nationales Microondes (JNM 2003), Lille, 21-23 Mai 2003, 5B7.
O2. K. Benmessai, S. Grop, C. Thibon, P.Y. Bourgeois,
Y. Kersalé, M. Oxborrow, M.E Tobar, D. Cros, N. Bazin, J.G. Hartnett, V. Madrangeas V. Giordano, ”Maser cryogénique à modes de galerie,” Actes des 15 ième Journées Nationales
Microondes (JNM 2007), Toulouse, 23-25 Mai, 2007
O3. K. Benmessai, N. Bazin, P-Y. Bourgeois, Y. Kersalé, and V. Giordano, M.E. Tobar, and J.G. Hartnett, G. Marra, and M. Oxborrow,
“Solution looking for a problem: The Fe3+:sapphire
whispering-gallery-mode 12.04 GHz maser oscillator, an X-band microwave source of extremely low
phase noise.” Meeting of the ARMMS RF and Microwave
Society, 7th & 8th April 2008 at Milton Hill House, Steventon,
P1 EN Ivanov, ME Tobar, JG
Hartnett, “Improvements in Interferometric Signal processing
Apparatus”; Australian provisional patent PQ6257 / PR0986 2000. Patent PCT/AU01/00277 March 2001.
P2 EN