Keith M Jahoda

Keith M Jahoda

  • (AST, FIELDS & PARTICLES)
  • 301.286.3527 | 301.286.1684
  • NASA/GSFC
  • Mail Code: 662.1
  • Greenbelt , MD 20771
  • Employer: NASA
  • Current Projects

    Polarimeter for Relativistic Astrophysical X-ray Sources (PRAXyS)

    PI of the PRAXyS mission, selected in August 2015 for a Phase A study.    PRAXyS is a Small Explorer mission that will provide the first sensitive survey of the X-ray polarization of black hole and neutron star sources.   Polarization is expected to yield clues to the geometry and emission mechanisms not available via other observational channels.    PRAXyS exploits the polarization sensitivity of photoelectric absorption

    HaloSat

    Co-Investigator.    HaloSat is an APRA funded CubeSat mission that will search for evidence of a hot galactic halo of the Milyway Galaxy.    Oxygen line emission will trace the distribution of the halo, which could account for up to half of all normal matter associated with the Galaxy.  The HaloSat collaboration is led by Prof. P. Kaaret at the U. of Iowa.

    Education

    Doctor of Philosophy
    University of Wisconsin, Madison, 1986
    Thesis: "H I Structure and the Soft X-ray Background"
    Advisor: Professor Dan McCammon
    Bachelor of Arts
    Swarthmore College, 1979

    Selected Publications

    Refereed

    Shaposhnikov, N. V., K. M. Jahoda, C. B. Markwardt, T. E. Strohmayer, and J. H. Swank. 2012. "ADVANCES IN THE RXTE PROPORTIONAL COUNTER ARRAY CALIBRATION: NEARING THE STATISTICAL LIMIT." Astrophysical Journal, 757: 159 [10.1088/0004-637X/757/2/159]

    Wilson-Hodge, C. A., M. L. Cherry, G. L. Case, et al. W. H. Baumgartner, E. Beklen, P. Narayana Bhat, M. S. Briggs, A. Camero-Arranz, V. Chaplin, V. Connaughton, M. H. Finger, N. Gehrels, J. Greiner, K. Jahoda, P. Jenke, R. M. Kippen, C. Kouveliotou, H. A. Krimm, E. Kuulkers, N. Lund, C. A. Meegan, L. Natalucci, W. S. Paciesas, R. Preece, J. C. Rodi, N. Shaposhnikov, G. K. Skinner, D. Swartz, A. von Kienlin, R. Diehl, and X. Zhang. 2011. "When a Standard Candle Flickers." The Astrophysical Journal Letters, [10.1088/2041-8205/727/2/L40]

    Weisskopf, M. C., M. Guainazzi, K. Jahoda, et al. N. Shaposhnikov, S. L. O'Dell, V. E. Zavlin, C. Wilson-Hodge, and R. F. Elsner. 2010. "On Calibrations Using the Crab Nebula and Models of the Nebular X-Ray Emission." The Astrophysical Journal, 713: 912 [Full Text (Link)] [10.1088/0004-637X/713/2/912]

    Jahoda, K., C. B. Markwardt, Y. Radeva, et al. A. H. Rots, M. J. Stark, J. H. Swank, T. E. Strohmayer, and W. Zhang. 2006. "Calibration of the Rossi X-Ray Timing Explorer Proportional Counter Array." The Astrophysical Journal Supplement Series, 163: 401 [Full Text (Link)] [10.1086/500659]

    Revnivtsev, M., M. Gilfanov, K. Jahoda, and R. Sunyaev. 2005. "Intensity of the cosmic X-ray backgound from HEAO1/A2 experiment." Astronomy and Astrophysics, 444: 381 [Full Text (Link)] [10.1051/0004-6361:20042526]

    Rots, A. H., K. Jahoda, and A. G. Lyne. 2004. "Absolute Timing of the Crab Pulsar with the Rossi X-Ray Timing Explorer." The Astrophysical Journal, 605: L129 [Full Text (Link)] [10.1086/420842]

    Revnivtsev, M., M. Gilfanov, R. Sunyaev, K. Jahoda, and C. Markwardt. 2003. "The spectrum of the cosmic X-ray background observed by RTXE/PCA." Astronomy and Astrophysics, v411, p329-334 (2003), 411: 329 [Full Text (Link)] [10.1051/0004-6361:20031386]

    Jahoda, K., and T. D. . 2003. "DUET - The Dark Universe Exploration Telescope." Astronomische Nachrichten, Vol 324, No 1-2, p 132-135, 324: 132 [Full Text (Link)]

    Deines-Jones, P., J. K. Black, S. D. Hunter, K. Jahoda, and S. M. Owens. 2002. "Large-area imaging micro-well detectors for high-energy astrophysics." Nuclear Instruments and Methods in Physics Research Section A, 478: 130 [Full Text (Link)] [10.1016/S0168-9002(01)01732-6]

    Scharf, C. A., K. Jahoda, M. Treyer, et al. O. Lahav, E. Boldt, and T. Piran. 2000. "The 2-10 keV X-Ray Background Dipole and Its Cosmological Implications." The Astrophysical Journal, 544: 49 [Full Text (Link)] [10.1086/317174]

    Selected Publications

    Refereed

    Shaposhnikov, N. V., K. M. Jahoda, C. B. Markwardt, T. E. Strohmayer, and J. H. Swank. 2012. "ADVANCES IN THE RXTE PROPORTIONAL COUNTER ARRAY CALIBRATION: NEARING THE STATISTICAL LIMIT." Astrophysical Journal 757 159 [10.1088/0004-637X/757/2/159]

    Wilson-Hodge, C. A., M. L. Cherry, G. L. Case, et al. W. H. Baumgartner, E. Beklen, P. Narayana Bhat, M. S. Briggs, A. Camero-Arranz, V. Chaplin, V. Connaughton, M. H. Finger, N. Gehrels, J. Greiner, K. Jahoda, P. Jenke, R. M. Kippen, C. Kouveliotou, H. A. Krimm, E. Kuulkers, N. Lund, C. A. Meegan, L. Natalucci, W. S. Paciesas, R. Preece, J. C. Rodi, N. Shaposhnikov, G. K. Skinner, D. Swartz, A. von Kienlin, R. Diehl, and X. Zhang. 2011. "When a Standard Candle Flickers." The Astrophysical Journal Letters [10.1088/2041-8205/727/2/L40]

    Weisskopf, M. C., M. Guainazzi, K. Jahoda, et al. N. Shaposhnikov, S. L. O'Dell, V. E. Zavlin, C. Wilson-Hodge, and R. F. Elsner. 2010. "On Calibrations Using the Crab Nebula and Models of the Nebular X-Ray Emission." The Astrophysical Journal 713 912 [Full Text (Link)] [10.1088/0004-637X/713/2/912]

    Jahoda, K., C. B. Markwardt, Y. Radeva, et al. A. H. Rots, M. J. Stark, J. H. Swank, T. E. Strohmayer, and W. Zhang. 2006. "Calibration of the Rossi X-Ray Timing Explorer Proportional Counter Array." The Astrophysical Journal Supplement Series 163 401 [Full Text (Link)] [10.1086/500659]

    Revnivtsev, M., M. Gilfanov, K. Jahoda, and R. Sunyaev. 2005. "Intensity of the cosmic X-ray backgound from HEAO1/A2 experiment." Astronomy and Astrophysics 444 381 [Full Text (Link)] [10.1051/0004-6361:20042526]

    Rots, A. H., K. Jahoda, and A. G. Lyne. 2004. "Absolute Timing of the Crab Pulsar with the Rossi X-Ray Timing Explorer." The Astrophysical Journal 605 L129 [Full Text (Link)] [10.1086/420842]

    Revnivtsev, M., M. Gilfanov, R. Sunyaev, K. Jahoda, and C. Markwardt. 2003. "The spectrum of the cosmic X-ray background observed by RTXE/PCA." Astronomy and Astrophysics, v411, p329-334 (2003) 411 329 [Full Text (Link)] [10.1051/0004-6361:20031386]

    Jahoda, K., and T. D. . 2003. "DUET - The Dark Universe Exploration Telescope." Astronomische Nachrichten, Vol 324, No 1-2, p 132-135 324 132 [Full Text (Link)]

    Deines-Jones, P., J. K. Black, S. D. Hunter, K. Jahoda, and S. M. Owens. 2002. "Large-area imaging micro-well detectors for high-energy astrophysics." Nuclear Instruments and Methods in Physics Research Section A 478 130 [Full Text (Link)] [10.1016/S0168-9002(01)01732-6]

    Scharf, C. A., K. Jahoda, M. Treyer, et al. O. Lahav, E. Boldt, and T. Piran. 2000. "The 2-10 keV X-Ray Background Dipole and Its Cosmological Implications." The Astrophysical Journal 544 49 [Full Text (Link)] [10.1086/317174]

                                                                                                                                                                                            
    NASA Logo, National Aeronautics and Space Administration