Leonid Petrov

Leonid Petrov

  • Instrument Scientist for Space Geodesy Project
  • Additional Roles: SCIENTIFIC SOFTWARE DEVELOPER
  • 301.614.5611
  • NASA/GSFC
  • Mail Code: 61A
  • Greenbelt , MD 20771
  • Employer: NASA
  • Brief Bio

    Leonid Petrov has over 30 years of experience in space geodesy, astrometry, and radioastronomy. He has been developing algorithms for all stages of analysis of very long baseline interferometry and their implementation in software and the operational pipeline. He has led a number of projects that resulted in the most complete catalogue of compact radio sources. He has been working on incorporation of the output of numerical weather models into analysis of space geodesy and astronomy observations.
     

    Research Interests

    Geophysics

    Astronomy

    Improvement of VLBI technique

    Current Projects

    Space Geodesy

    VLBI Lead Scientist. Lead the efforts to improve VLBI results for geodesy, geophysics, and astronomy.

    Excitation and dissipation of the free core nutation

    Study of the effect of liquid core to the Earth rotation by combined analysis of VLBI observations and the outputs of numerical weather models.
     

    Improvement of modeling the atmosphere for space geodesy

    Study of the optimal accounting the turbulence of the atmosphere for analysis of space geodesy observations.

    Improvement of the radioastrometry catalogues

    Lead observational programs that aims to improve positions of compact radio sources.

    Professional Service

    Managing the International Mass Loading Service

    Managing the Network Earth Rotation Service

    Managing the Atmospheric Angular Momentum Service

    Managing the Path Delay in the Atmosphere Service

    Managing the International Path Delay Service

    Managing the VLBI Calibrator search engine

    Managing the The VLBI image database

    Maintaining scientific open source software packages: PIMA, VTD, NERS, Sotid, Fourpack, gvh, malo, spd, sur_sked

    Publications

    Refereed

    Deller, A., W. Goss, W. Brisken, et al. S. Chatterjee, J. Cordes, G. Janssen, Y. Kovalev, T. Lazio, L. Petrov, B. Stappers, and A. Lyne. 2019. "Microarcsecond VLBI pulsar astrometry with PSRpi II. parallax distances for 57 pulsars." The Astronomical Journral, 875 (2): 100 [10.3847/1538-4357/ab11c7]

    Plavin, A., Y. Kovalev, and L. Petrov. 2019. "Dissecting the AGN disk-jet system with joint VLBI-Gaia analysis." The Astrophysical Journal, 871 (2): 143 [10.3847/1538-4357/aaf650]

    Petrov, L., A. de Witt, E. Sadler, C. Phillips, and S. Horiuchi. 2019. "The Second LBA Calibrator Survey of southern compact extragalactic radio sources - LCS2." Monthly Notices of the Royal Astronomical Society, 485 (1): 88-101 [10.1093/mnras/stz242]

    Petrov, L., Y. Kovalev, and A. Plavin. 2019. "A quantitative analysis of systematic differences in positions and proper motions of Gaia DR2 with respect to VLBI." Monthly Notices of the Royal Astronomical Society, 482 (3): 3023–3031 [10.1093/mnras/sty2807]

    Harju, J., K. Lehtinen, J. Romney, et al. L. Petrov, M. Granvik, K. Muinonen, U. Bach, and M. Poutanen. 2018. "Radio Interferometric Observation of an Asteroid Occultation." The Astronomical Journal, 156 (4): 155 [10.3847/1538-3881/aad45b]

    Giovannini, G., T. Savolainen, M. Orienti, et al. M. Nakamura, H. Nagai, M. Kino, M. Giroletti, K. Hada, G. Bruni, Y. Y. Kovalev, J. M. Anderson, F. D’Ammando, J. Hodgson, M. Honma, T. P. Krichbaum, S.-S. Lee, R. Lico, M. M. Lisakov, A. P. Lobanov, L. Petrov, B. W. Sohn, K. V. Sokolovsky, P. A. Voitsik, J. A. Zensus, and S. Tingay. 2018. "A wide and collimated radio jet in 3C84 on the scale of a few hundred gravitational radii." Nature Astronomy, 2 (6): 472-477 [10.1038/s41550-018-0431-2]

    Petrov, L., and Y. Y. Kovalev. 2017. "Observational consequences of optical band milliarcsec-scale structure in active galactic nuclei discovered by Gaia." Monthly Notices of the Royal Astronomical Society, 471 (4): 3775-3787 [10.1093/mnras/stx1747]

    Shu, F., L. Petrov, W. Jiang, et al. B. Xia, T. Jiang, Y. Cui, K. Takefuji, J. McCallum, J. Lovell, S.-O. Yi, L. Hao, W. Yang, H. Zhang, Z. Chen, and J. Li. 2017. "VLBI Ecliptic Plane Survey: VEPS-1." The Astrophysical Journal Supplement Series, 230 (2): 13 [10.3847/1538-4365/aa71a3]

    Petrov, L., and Y. Y. Kovalev. 2017. "On significance of VLBI/Gaia position offsets." Monthly Notices of the Royal Astronomical Society: Letters, 467 (1): L71-L75 [10.1093/mnrasl/slx001]

    Schinzel, F. K., L. Petrov, G. B. Taylor, and P. G. Edwards. 2017. "Radio Follow-up on All Unassociated Gamma-Ray Sources from the Third Fermi Large Area Telescope Source Catalog." The Astrophysical Journal, 838 (2): 139 [10.3847/1538-4357/aa6439]

    Kovalev, Y. Y., L. Petrov, and A. V. Plavin. 2017. "VLBI-Gaia offsets favor parsec-scale jet direction in active galactic nuclei." Astronomy & Astrophysics, 598: L1 [10.1051/0004-6361/201630031]

    Condon, J. J., J. Darling, Y. Y. Kovalev, and L. Petrov. 2017. "a Nearly Naked Supermassive Black Hole." The Astrophysical Journal, 834 (2): 184 [10.3847/1538-4357/834/2/184]

    Deller, A. T., S. J. Vigeland, D. L. Kaplan, et al. W. M. Goss, W. F. Brisken, S. Chatterjee, J. M. Cordes, G. H. Janssen, T. J. Lazio, L. Petrov, B. W. Stappers, and A. Lyne. 2016. "MICROARCSECOND VLBI PULSAR ASTROMETRY WITH PSRπ. I. TWO BINARY MILLISECOND PULSARS WITH WHITE DWARF COMPANIONS." The Astrophysical Journal, 828 (1): 8 [10.3847/0004-637x/828/1/8]

    Lehtinen, K., U. Bach, K. Muinonen, M. Poutanen, and L. Petrov. 2016. "ASTEROID SIZING BY RADIOGALAXY OCCULTATION AT 5 GHZ." The Astrophysical Journal, 822 (2): L21 [10.3847/2041-8205/822/2/l21]

    Kovalev, Y. Y., N. S. Kardashev, K. I. Kellermann, et al. A. P. Lobanov, M. D. Johnson, L. I. Gurvits, P. A. Voitsik, J. A. Zensus, J. M. Anderson, U. Bach, D. L. Jauncey, F. Ghigo, T. Ghosh, A. Kraus, Y. A. Kovalev, M. M. Lisakov, L. Y. Petrov, J. D. Romney, C. J. Salter, and K. V. Sokolovsky. 2016. "RADIOASTRON OBSERVATIONS OF THE QUASAR 3C273: A CHALLENGE TO THE BRIGHTNESS TEMPERATURE LIMIT." The Astrophysical Journal, 820 (1): L9 [10.3847/2041-8205/820/1/l9]

    Petrov, L., T. Natusch, S. Weston, et al. J. McCallum, S. Ellingsen, and S. Gulyaev. 2015. "First Scientific VLBI Observations Using New Zealand 30 Meter Radio Telescope WARK30M." pasp, 127: 516 [10.1086/681965]

    Strader, J., L. Chomiuk, C. C. Cheung, et al. D. J. Sand, D. Donato, R. H. Corbet, D. Koeppe, P. G. Edwards, J. Stevens, L. Petrov, R. Salinas, M. Peacock, T. Finzell, D. E. Reichart, and J. B. Haislip. 2015. "1FGL J1417.7–4407: A LIKELY GAMMA-RAY BRIGHT BINARY WITH A MASSIVE NEUTRON STAR AND A GIANT SECONDARY." The Astrophysical Journal, 804 (1): L12 [10.1088/2041-8205/804/1/l12]

    Schinzel, F. K., L. Petrov, G. B. Taylor, et al. E. K. Mahony, P. G. Edwards, and Y. Y. Kovalev. 2015. "NEW ASSOCIATIONS OF GAMMA-RAY SOURCES FROM THE FERMI SECOND SOURCE CATALOG." The Astrophysical Journal Supplement Series, 217 (1): 4 [10.1088/0067-0049/217/1/4]

    Lee, S.-S., L. Petrov, D.-Y. Byun, et al. J. Kim, T. Jung, M.-G. Song, C. S. Oh, D.-G. Roh, D.-H. Je, S.-O. Wi, B. W. Sohn, S.-J. Oh, K.-T. Kim, J.-H. Yeom, M.-H. Chung, J. Kang, S.-T. Han, J.-W. Lee, B. G. Kim, H. Chung, H.-G. Kim, H. R. Kim, Y.-W. Kang, and S.-H. Cho. 2014. "EARLY SCIENCE WITH THE KOREAN VLBI NETWORK: EVALUATION OF SYSTEM PERFORMANCE." The Astronomical Journal, 147 (4): 77 [10.1088/0004-6256/147/4/77]

    Petrov, L. 2013. "THE CATALOG OF POSITIONS OF OPTICALLY BRIGHT EXTRAGALACTIC RADIO SOURCES OBRS-2." The Astronomical Journal, 146 (1): 5 [10.1088/0004-6256/146/1/5]

    Petrov, L., E. K. Mahony, P. G. Edwards, et al. E. M. Sadler, F. K. Schinzel, and D. McConnell. 2013. "Australia Telescope Compact Array observations of Fermi unassociated sources." Monthly Notices of the Royal Astronomical Society, 432 (2): 1294-1302 [10.1093/mnras/stt550]

    Petrov, L., S.-S. Lee, J. Kim, et al. T. Jung, J. Oh, B. W. Sohn, D.-Y. Byun, M.-H. Chung, D.-H. Je, S.-O. Wi, M.-G. Song, J. Kang, S.-T. Han, J.-W. Lee, B. G. Kim, H. Chung, and H.-G. Kim. 2012. "EARLY SCIENCE WITH THE KOREAN VLBI NETWORK: THE QCAL-1 43 GHz CALIBRATOR SURVEY." The Astronomical Journal, 144 (5): 150 [10.1088/0004-6256/144/5/150]

    Bartel, N., M. F. Bietenholz, D. E. Lebach, et al. J. I. Lederman, L. Petrov, R. R. Ransom, M. I. Ratner, and I. I. Shapiro. 2012. "VLBI FORGRAVITY PROBE B. III. A LIMIT ON THE PROPER MOTION OF THE “CORE” OF THE QUASAR 3C 454.3." The Astrophysical Journal Supplement Series, 201 (1): 3 [10.1088/0067-0049/201/1/3]

    Petrov, L., M. Honma, and S. M. Shibata. 2012. "THE KCAL VERA 22 GHz CALIBRATOR SURVEY." The Astronomical Journal, 143 (2): 35 [10.1088/0004-6256/143/2/35]

    Petrov, L. 2011. "The EVN Galactic Plane Survey - EGaPS." Monthly Notices of the Royal Astronomical Society, 419 (2): 1097-1106 [10.1111/j.1365-2966.2011.19765.x]

    Petrov, L. 2011. "THE CATALOG OF POSITIONS OF OPTICALLY BRIGHT EXTRAGALACTIC RADIO SOURCES OBRS-1." The Astronomical Journal, 142 (4): 105 [10.1088/0004-6256/142/4/105]

    Petrov, L., and G. B. Taylor. 2011. "PRECISE ABSOLUTE ASTROMETRY FROM THE VLBA IMAGING AND POLARIMETRY SURVEY AT 5 GHz." The Astronomical Journal, 142 (3): 89 [10.1088/0004-6256/142/3/89]

    Petrov, L., Y. Y. Kovalev, E. B. Fomalont, and D. Gordon. 2011. "THE VERY LONG BASELINE ARRAY GALACTIC PLANE SURVEY—VGaPS." The Astronomical Journal, 142 (2): 35 [10.1088/0004-6256/142/2/35]

    Petrov, L., C. Phillips, A. Bertarini, T. Murphy, and E. M. Sadler. 2011. "The LBA Calibrator Survey of southern compact extragalactic radio sources - LCS1." Monthly Notices of the Royal Astronomical Society, 414 (3): 2528-2539 [10.1111/j.1365-2966.2011.18570.x]

    Petrov, L., C. Phillips, T. Tzioumis, et al. B. Stansby, C. Reynolds, H. E. Bignall, S. Gulyaev, T. Natusch, N. Palmer, D. Collett, J. E. Reynolds, S. W. Amy, R. Wayth, and S. J. Tingay. 2011. "First Geodetic Observations Using New VLBI Stations ASKAP-29 and WARK12M." Publications of the Astronomical Society of Australia, 28 (02): 107-116 [10.1071/as10048]

    Sarti, P., C. Abbondanza, L. Petrov, and M. Negusini. 2010. "Height bias and scale effect induced by antenna gravitational deformations in geodetic VLBI data analysis." Journal of Geodesy, 85 (1): 1-8 [10.1007/s00190-010-0410-6]

    Petrov, L., D. Gordon, J. Gipson, et al. D. MacMillan, C. Ma, E. Fomalont, R. Walker, and C. C. Carabajal. 2009. "Precise geodesy with the Very Long Baseline Array." Journal of Geodesy, 83 (9): 859-876 [10.1007/s00190-009-0304-7]

    Petrov, L., C. Phillips, A. Bertarini, et al. A. Deller, S. Pogrebenko, and A. Mujunen. 2009. "Use of the Long Baseline Array in Australia for Precise Geodesy and Absolute Astrometry." Publications of the Astronomical Society of Australia, 26 (01): 75-84 [10.1071/as08030]

    Petrov, L., Y. Y. Kovalev, E. B. Fomalont, and D. Gordon. 2008. "THE SIXTH VLBA CALIBRATOR SURVEY: VCS6." The Astronomical Journal, 136 (2): 580-585 [10.1088/0004-6256/136/2/580]

    Petrov, L., T. Hirota, M. Honma, et al. K. M. Shibata, T. Jike, and H. Kobayashi. 2007. "VERA 22 GHz Fringe Search Survey." The Astronomical Journal, 133 (6): 2487-2494 [10.1086/513146]

    Kovalev, Y. Y., L. Petrov, E. B. Fomalont, and D. Gordon. 2007. "The Fifth VLBA Calibrator Survey: VCS5." The Astronomical Journal, 133 (4): 1236-1242 [10.1086/511157]

    Petrov, L. 2007. "The empirical Earth rotation model from VLBI observations." Astronomy & Astrophysics, 467 (1): 359-369 [10.1051/0004-6361:20065091]

    Petrov, L., Y. Y. Kovalev, E. B. Fomalont, and D. Gordon. 2006. "The Fourth VLBA Calibrator Survey: VCS4." The Astronomical Journal, 131 (3): 1872-1879 [10.1086/499947]

    Petrov, L., Y. Y. Kovalev, E. Fomalont, and D. Gordon. 2005. "The Third VLBA Calibrator Survey: VCS3." The Astronomical Journal, 129 (2): 1163-1170 [10.1086/426920]

    Petrov, L., and J.-P. . 2004. "Study of the atmospheric pressure loading signal in very long baseline interferometry observations." Journal of Geophysical Research, 109 (B3): B03405 [10.1029/2003jb002500]

    Fomalont, E. B., L. Petrov, D. MacMillan, D. Gordon, and C. Ma. 2003. "The Second VLBA Calibrator Survey: VCS2." The Astrophysical Journal, 126 (5): 2562-2566 [10.1086/378712]

    Petrov, L., and C. Ma. 2003. "Study of harmonic site position variations determined by very long baseline interferometry." J. Geophys. Res., 108 (B4): 2190 [10.1029/2002JB001801]

    Beasley, A., D. Gordon, A. Peck, et al. L. Petrov, D. MacMillan, E. Fomalont, and C. Ma. 2002. "The VLBA Calibrator Survey—VCS1." Astrophysical Journal, Supplement Series, 141 (1): 13-21 [10.1086/339806]

    Petrov, L., O. Volvach, and N. Nesterov. 2001. "Measurements of horizontal motion of the station Simeiz using VLBI." Kinematika i Fizika Nebesnykh Tel, 17: 424-436.

    Petrov, L. 1998. "VLBI measurements of the crustal deformations induced by polar motion.." Izvestiya Physics of the Solid Earth, 34: 228-230.

    Non-Refereed

    Petrov, L. Y., and S. B. Luthcke. 2013. "Revision of the Atmospheric Delay Correction for ICESat-2 Laser Altimeter Ranges." NASA/TM–2013- 217513 Greenbelt, Maryland, U.S.A.: [Full Text (Link)]

    Brief Bio

    Leonid Petrov has over 30 years of experience in space geodesy, astrometry, and radioastronomy. He has been developing algorithms for all stages of analysis of very long baseline interferometry and their implementation in software and the operational pipeline. He has led a number of projects that resulted in the most complete catalogue of compact radio sources. He has been working on incorporation of the output of numerical weather models into analysis of space geodesy and astronomy observations.
     

    Publications

    Refereed

    Deller, A., W. Goss, W. Brisken, et al. S. Chatterjee, J. Cordes, G. Janssen, Y. Kovalev, T. Lazio, L. Petrov, B. Stappers, and A. Lyne. 2019. "Microarcsecond VLBI pulsar astrometry with PSRpi II. parallax distances for 57 pulsars." The Astronomical Journral 875 (2): 100 [10.3847/1538-4357/ab11c7]

    Plavin, A., Y. Kovalev, and L. Petrov. 2019. "Dissecting the AGN disk-jet system with joint VLBI-Gaia analysis." The Astrophysical Journal 871 (2): 143 [10.3847/1538-4357/aaf650]

    Petrov, L., A. de Witt, E. Sadler, C. Phillips, and S. Horiuchi. 2019. "The Second LBA Calibrator Survey of southern compact extragalactic radio sources - LCS2." Monthly Notices of the Royal Astronomical Society 485 (1): 88-101 [10.1093/mnras/stz242]

    Petrov, L., Y. Kovalev, and A. Plavin. 2019. "A quantitative analysis of systematic differences in positions and proper motions of Gaia DR2 with respect to VLBI." Monthly Notices of the Royal Astronomical Society 482 (3): 3023–3031 [10.1093/mnras/sty2807]

    Harju, J., K. Lehtinen, J. Romney, et al. L. Petrov, M. Granvik, K. Muinonen, U. Bach, and M. Poutanen. 2018. "Radio Interferometric Observation of an Asteroid Occultation." The Astronomical Journal 156 (4): 155 [10.3847/1538-3881/aad45b]

    Giovannini, G., T. Savolainen, M. Orienti, et al. M. Nakamura, H. Nagai, M. Kino, M. Giroletti, K. Hada, G. Bruni, Y. Y. Kovalev, J. M. Anderson, F. D’Ammando, J. Hodgson, M. Honma, T. P. Krichbaum, S.-S. Lee, R. Lico, M. M. Lisakov, A. P. Lobanov, L. Petrov, B. W. Sohn, K. V. Sokolovsky, P. A. Voitsik, J. A. Zensus, and S. Tingay. 2018. "A wide and collimated radio jet in 3C84 on the scale of a few hundred gravitational radii." Nature Astronomy 2 (6): 472-477 [10.1038/s41550-018-0431-2]

    Petrov, L., and Y. Y. Kovalev. 2017. "Observational consequences of optical band milliarcsec-scale structure in active galactic nuclei discovered by Gaia." Monthly Notices of the Royal Astronomical Society 471 (4): 3775-3787 [10.1093/mnras/stx1747]

    Shu, F., L. Petrov, W. Jiang, et al. B. Xia, T. Jiang, Y. Cui, K. Takefuji, J. McCallum, J. Lovell, S.-O. Yi, L. Hao, W. Yang, H. Zhang, Z. Chen, and J. Li. 2017. "VLBI Ecliptic Plane Survey: VEPS-1." The Astrophysical Journal Supplement Series 230 (2): 13 [10.3847/1538-4365/aa71a3]

    Petrov, L., and Y. Y. Kovalev. 2017. "On significance of VLBI/Gaia position offsets." Monthly Notices of the Royal Astronomical Society: Letters 467 (1): L71-L75 [10.1093/mnrasl/slx001]

    Schinzel, F. K., L. Petrov, G. B. Taylor, and P. G. Edwards. 2017. "Radio Follow-up on All Unassociated Gamma-Ray Sources from the Third Fermi Large Area Telescope Source Catalog." The Astrophysical Journal 838 (2): 139 [10.3847/1538-4357/aa6439]

    Kovalev, Y. Y., L. Petrov, and A. V. Plavin. 2017. "VLBI-Gaia offsets favor parsec-scale jet direction in active galactic nuclei." Astronomy & Astrophysics 598 L1 [10.1051/0004-6361/201630031]

    Condon, J. J., J. Darling, Y. Y. Kovalev, and L. Petrov. 2017. "a Nearly Naked Supermassive Black Hole." The Astrophysical Journal 834 (2): 184 [10.3847/1538-4357/834/2/184]

    Deller, A. T., S. J. Vigeland, D. L. Kaplan, et al. W. M. Goss, W. F. Brisken, S. Chatterjee, J. M. Cordes, G. H. Janssen, T. J. Lazio, L. Petrov, B. W. Stappers, and A. Lyne. 2016. "MICROARCSECOND VLBI PULSAR ASTROMETRY WITH PSRπ. I. TWO BINARY MILLISECOND PULSARS WITH WHITE DWARF COMPANIONS." The Astrophysical Journal 828 (1): 8 [10.3847/0004-637x/828/1/8]

    Lehtinen, K., U. Bach, K. Muinonen, M. Poutanen, and L. Petrov. 2016. "ASTEROID SIZING BY RADIOGALAXY OCCULTATION AT 5 GHZ." The Astrophysical Journal 822 (2): L21 [10.3847/2041-8205/822/2/l21]

    Kovalev, Y. Y., N. S. Kardashev, K. I. Kellermann, et al. A. P. Lobanov, M. D. Johnson, L. I. Gurvits, P. A. Voitsik, J. A. Zensus, J. M. Anderson, U. Bach, D. L. Jauncey, F. Ghigo, T. Ghosh, A. Kraus, Y. A. Kovalev, M. M. Lisakov, L. Y. Petrov, J. D. Romney, C. J. Salter, and K. V. Sokolovsky. 2016. "RADIOASTRON OBSERVATIONS OF THE QUASAR 3C273: A CHALLENGE TO THE BRIGHTNESS TEMPERATURE LIMIT." The Astrophysical Journal 820 (1): L9 [10.3847/2041-8205/820/1/l9]

    Petrov, L., T. Natusch, S. Weston, et al. J. McCallum, S. Ellingsen, and S. Gulyaev. 2015. "First Scientific VLBI Observations Using New Zealand 30 Meter Radio Telescope WARK30M." pasp 127 516 [10.1086/681965]

    Strader, J., L. Chomiuk, C. C. Cheung, et al. D. J. Sand, D. Donato, R. H. Corbet, D. Koeppe, P. G. Edwards, J. Stevens, L. Petrov, R. Salinas, M. Peacock, T. Finzell, D. E. Reichart, and J. B. Haislip. 2015. "1FGL J1417.7–4407: A LIKELY GAMMA-RAY BRIGHT BINARY WITH A MASSIVE NEUTRON STAR AND A GIANT SECONDARY." The Astrophysical Journal 804 (1): L12 [10.1088/2041-8205/804/1/l12]

    Schinzel, F. K., L. Petrov, G. B. Taylor, et al. E. K. Mahony, P. G. Edwards, and Y. Y. Kovalev. 2015. "NEW ASSOCIATIONS OF GAMMA-RAY SOURCES FROM THE FERMI SECOND SOURCE CATALOG." The Astrophysical Journal Supplement Series 217 (1): 4 [10.1088/0067-0049/217/1/4]

    Lee, S.-S., L. Petrov, D.-Y. Byun, et al. J. Kim, T. Jung, M.-G. Song, C. S. Oh, D.-G. Roh, D.-H. Je, S.-O. Wi, B. W. Sohn, S.-J. Oh, K.-T. Kim, J.-H. Yeom, M.-H. Chung, J. Kang, S.-T. Han, J.-W. Lee, B. G. Kim, H. Chung, H.-G. Kim, H. R. Kim, Y.-W. Kang, and S.-H. Cho. 2014. "EARLY SCIENCE WITH THE KOREAN VLBI NETWORK: EVALUATION OF SYSTEM PERFORMANCE." The Astronomical Journal 147 (4): 77 [10.1088/0004-6256/147/4/77]

    Petrov, L. 2013. "THE CATALOG OF POSITIONS OF OPTICALLY BRIGHT EXTRAGALACTIC RADIO SOURCES OBRS-2." The Astronomical Journal 146 (1): 5 [10.1088/0004-6256/146/1/5]

    Petrov, L., E. K. Mahony, P. G. Edwards, et al. E. M. Sadler, F. K. Schinzel, and D. McConnell. 2013. "Australia Telescope Compact Array observations of Fermi unassociated sources." Monthly Notices of the Royal Astronomical Society 432 (2): 1294-1302 [10.1093/mnras/stt550]

    Petrov, L., S.-S. Lee, J. Kim, et al. T. Jung, J. Oh, B. W. Sohn, D.-Y. Byun, M.-H. Chung, D.-H. Je, S.-O. Wi, M.-G. Song, J. Kang, S.-T. Han, J.-W. Lee, B. G. Kim, H. Chung, and H.-G. Kim. 2012. "EARLY SCIENCE WITH THE KOREAN VLBI NETWORK: THE QCAL-1 43 GHz CALIBRATOR SURVEY." The Astronomical Journal 144 (5): 150 [10.1088/0004-6256/144/5/150]

    Bartel, N., M. F. Bietenholz, D. E. Lebach, et al. J. I. Lederman, L. Petrov, R. R. Ransom, M. I. Ratner, and I. I. Shapiro. 2012. "VLBI FORGRAVITY PROBE B. III. A LIMIT ON THE PROPER MOTION OF THE “CORE” OF THE QUASAR 3C 454.3." The Astrophysical Journal Supplement Series 201 (1): 3 [10.1088/0067-0049/201/1/3]

    Petrov, L., M. Honma, and S. M. Shibata. 2012. "THE KCAL VERA 22 GHz CALIBRATOR SURVEY." The Astronomical Journal 143 (2): 35 [10.1088/0004-6256/143/2/35]

    Petrov, L. 2011. "The EVN Galactic Plane Survey - EGaPS." Monthly Notices of the Royal Astronomical Society 419 (2): 1097-1106 [10.1111/j.1365-2966.2011.19765.x]

    Petrov, L. 2011. "THE CATALOG OF POSITIONS OF OPTICALLY BRIGHT EXTRAGALACTIC RADIO SOURCES OBRS-1." The Astronomical Journal 142 (4): 105 [10.1088/0004-6256/142/4/105]

    Petrov, L., and G. B. Taylor. 2011. "PRECISE ABSOLUTE ASTROMETRY FROM THE VLBA IMAGING AND POLARIMETRY SURVEY AT 5 GHz." The Astronomical Journal 142 (3): 89 [10.1088/0004-6256/142/3/89]

    Petrov, L., Y. Y. Kovalev, E. B. Fomalont, and D. Gordon. 2011. "THE VERY LONG BASELINE ARRAY GALACTIC PLANE SURVEY—VGaPS." The Astronomical Journal 142 (2): 35 [10.1088/0004-6256/142/2/35]

    Petrov, L., C. Phillips, A. Bertarini, T. Murphy, and E. M. Sadler. 2011. "The LBA Calibrator Survey of southern compact extragalactic radio sources - LCS1." Monthly Notices of the Royal Astronomical Society 414 (3): 2528-2539 [10.1111/j.1365-2966.2011.18570.x]

    Petrov, L., C. Phillips, T. Tzioumis, et al. B. Stansby, C. Reynolds, H. E. Bignall, S. Gulyaev, T. Natusch, N. Palmer, D. Collett, J. E. Reynolds, S. W. Amy, R. Wayth, and S. J. Tingay. 2011. "First Geodetic Observations Using New VLBI Stations ASKAP-29 and WARK12M." Publications of the Astronomical Society of Australia 28 (02): 107-116 [10.1071/as10048]

    Sarti, P., C. Abbondanza, L. Petrov, and M. Negusini. 2010. "Height bias and scale effect induced by antenna gravitational deformations in geodetic VLBI data analysis." Journal of Geodesy 85 (1): 1-8 [10.1007/s00190-010-0410-6]

    Petrov, L., D. Gordon, J. Gipson, et al. D. MacMillan, C. Ma, E. Fomalont, R. Walker, and C. C. Carabajal. 2009. "Precise geodesy with the Very Long Baseline Array." Journal of Geodesy 83 (9): 859-876 [10.1007/s00190-009-0304-7]

    Petrov, L., C. Phillips, A. Bertarini, et al. A. Deller, S. Pogrebenko, and A. Mujunen. 2009. "Use of the Long Baseline Array in Australia for Precise Geodesy and Absolute Astrometry." Publications of the Astronomical Society of Australia 26 (01): 75-84 [10.1071/as08030]

    Petrov, L., Y. Y. Kovalev, E. B. Fomalont, and D. Gordon. 2008. "THE SIXTH VLBA CALIBRATOR SURVEY: VCS6." The Astronomical Journal 136 (2): 580-585 [10.1088/0004-6256/136/2/580]

    Petrov, L., T. Hirota, M. Honma, et al. K. M. Shibata, T. Jike, and H. Kobayashi. 2007. "VERA 22 GHz Fringe Search Survey." The Astronomical Journal 133 (6): 2487-2494 [10.1086/513146]

    Kovalev, Y. Y., L. Petrov, E. B. Fomalont, and D. Gordon. 2007. "The Fifth VLBA Calibrator Survey: VCS5." The Astronomical Journal 133 (4): 1236-1242 [10.1086/511157]

    Petrov, L. 2007. "The empirical Earth rotation model from VLBI observations." Astronomy & Astrophysics 467 (1): 359-369 [10.1051/0004-6361:20065091]

    Petrov, L., Y. Y. Kovalev, E. B. Fomalont, and D. Gordon. 2006. "The Fourth VLBA Calibrator Survey: VCS4." The Astronomical Journal 131 (3): 1872-1879 [10.1086/499947]

    Petrov, L., Y. Y. Kovalev, E. Fomalont, and D. Gordon. 2005. "The Third VLBA Calibrator Survey: VCS3." The Astronomical Journal 129 (2): 1163-1170 [10.1086/426920]

    Petrov, L., and J.-P. . 2004. "Study of the atmospheric pressure loading signal in very long baseline interferometry observations." Journal of Geophysical Research 109 (B3): B03405 [10.1029/2003jb002500]

    Fomalont, E. B., L. Petrov, D. MacMillan, D. Gordon, and C. Ma. 2003. "The Second VLBA Calibrator Survey: VCS2." The Astrophysical Journal 126 (5): 2562-2566 [10.1086/378712]

    Petrov, L., and C. Ma. 2003. "Study of harmonic site position variations determined by very long baseline interferometry." J. Geophys. Res. 108 (B4): 2190 [10.1029/2002JB001801]

    Beasley, A., D. Gordon, A. Peck, et al. L. Petrov, D. MacMillan, E. Fomalont, and C. Ma. 2002. "The VLBA Calibrator Survey—VCS1." Astrophysical Journal, Supplement Series 141 (1): 13-21 [10.1086/339806]

    Petrov, L., O. Volvach, and N. Nesterov. 2001. "Measurements of horizontal motion of the station Simeiz using VLBI." Kinematika i Fizika Nebesnykh Tel 17 424-436

    Petrov, L. 1998. "VLBI measurements of the crustal deformations induced by polar motion.." Izvestiya Physics of the Solid Earth 34 228-230

    Non-Refereed

    Petrov, L. Y., and S. B. Luthcke. 2013. "Revision of the Atmospheric Delay Correction for ICESat-2 Laser Altimeter Ranges." NASA/TM–2013- 217513 [Full Text (Link)]

                                                                                                                                                                                            
    NASA Logo, National Aeronautics and Space Administration