Dr. Tahir Yaqoob is a senior research scientist affiliated with the University of Maryland Baltimore Country (UMBC), and the Center for Research and Exploration in Space Science and Technology (CRESSTII), specializing in the area of X-ray astrophysics, with more than 25 years experience. He has been a member of the "Science Working Group" (SWG) for a number of X-ray astronomy missions (ASCA, Astro-E, Astro-E2 (Suzaku), and Hitomi). Dr. Yaqoob's most active areas of research concern X-ray observations and modeling of physical processes in accreting black-hole systems, from the extreme conditions in the vicinity of the black hole, out to the parsec-scale circumnuclear environment. Dr. Yaqoob also had more than 25 years experience teaching and mentoring physics, math, and astronomy, from pre-undergraduate to post-Ph.D. levels.
Tahir Yaqoob
(RESEARCH SCIENTIST)
Org Code: 662
NASA/GSFCMail Code: 662
Greenbelt, MD 20771
Employer: UNIVERSITY OF MARYLAND BALTIMORE CO
Brief Bio
Research Interests
Modeling physical processes in accreting black-hole and compact object systems
Astrophysics: X-ray AstrophysicsActive Galactic Nuclei (AGN), quasars
Astrophysics: Active Galactic Nuclei (AGN)Positions/Employment
Royal Society/JSPS Postdoctoral Fellowship
Institute of Space and Astronautical Science - Sagamihara, Kanagawa, Japan
September 1990 - October 1991
Royal Society/JSPS Postdoctoral Fellowship
Institute of Astronomy - Cambridge, UK
November 1991 - October 1992
Research Scientist
USRA - NASA/Goddard Space Flight Center, MD, USA
November 1992 - May 2000
Research Scientist
University of Maryland Baltimore Country (UMBC) - Maryland, USA (located at GSFC)
June 2000 - October 2000
Principal Research Scientist
Johns Hopkins University - Baltimore, USA
November 2000 - June 2013
Senior Research Scientist
University of Maryland Baltimore Country (UMBC) - Maryland, USA (located at GSFC)
June 2013 - Present
Education
Tahir Yaqoob obtained a B.A. (Hons) in Physics at the University of Oxford, UK, in 1986, and a PhD in X-ray Astrophysics at the University of Leicester, UK, in 1990. He subsequently continued his research in X-ray astronomy at the Institute of Space and Astronautical Science (ISAS), Japan, on a Royal Society/JSPS Fellowship, and then at the Institute of Astronomy, Cambridge, UK, on a Royal Society Fellowship.
Publications
Refereed
Yaqoob, T., T. J. Turner, M. M. Tatum, M. Trevor, and A. Scholtes. 2016. No signatures of black hole spin in the X-ray spectrum of the Seyfert 1 galaxy Fairall 9 Monthly Notices of the Royal Astronomical Society 462 (4): 4038-4054 [10.1093/mnras/stw1824]
Yaqoob, T., M. M. Tatum, A. Scholtes, A. Gottlieb, and T. J. Turner. 2015. A Compton-thin solution for theSuzakuX-ray spectrum of the Seyfert 2 galaxy Mkn 3 Monthly Notices of the Royal Astronomical Society 454 (1): 973-990 [10.1093/mnras/stv2021]
Yaqoob, T. 2012. The nature of the Compton-thick X-ray reprocessor in NGC 4945 Monthly Notices of the Royal Astronomical Society 423 (4): 3360-3396 [10.1111/j.1365-2966.2012.21129.x]
Yaqoob, T., K. D. Murphy, L. Miller, and T. J. Turner. 2010. On the efficiency of production of the Fe Kα emission line in neutral matter Monthly Notices of the Royal Astronomical Society 401 411 [10.1111/j.1365-2966.2009.15657.x]
Murphy, K. D., T. Yaqoob, and Y. Terashima. 2007. Monitoring the Violent Activity from the Inner Accretion Disk of the Seyfert 19 Galaxy NGC 2992 with RXTE The Astrophysical Journal 666 96 [10.1086/520039]
McKernan, B., T. Yaqoob, and C. S. Reynolds. 2007. A soft X-ray study of type I active galactic nuclei observed with Chandra high-energy transmission grating spectrometer Monthly Notices of the Royal Astronomical Society 379 1359 [10.1111/j.1365-2966.2007.11993.x]
Yaqoob, T., K. D. Murphy, R. E. Griffiths, et al. Y. Haba, H. Inoue, T. Itoh, R. L. Kelley, M. Kokubun, A. G. Markowitz, R. F. Mushotzky, T. Okajima, A. F. Ptak, J. Reeves, P. J. Serlemitsos, T. Takahashi, and Y. Terashima. 2007. Precision Fe Kα and Fe Kβ Line Spectroscopy of the Seyfert 19 Galaxy NGC 2992 with Suzaku Publications of the Astronomical Society of Japan, Vol59, NoSP1, pp283-299 59 283
Yaqoob, T., and P. Serlemitsos. 2005. Iron K Features in the Quasar E1821+643: Evidence for Gravitationally Redshifted Absorption? The Astrophysical Journal 623 112 [10.1086/428432]
Dovčiak, M., V. Karas, and T. Yaqoob. 2004. An Extended Scheme for Fitting X-Ray Data with Accretion Disk Spectra in the Strong Gravity Regime The Astrophysical Journal Supplement Series 153 205 [10.1086/421115]
Yaqoob, T., and U. Padmanabhan. 2004. The Cores of the Fe K Lines in Seyfert 1 Galaxies Observed by the Chandra High Energy Grating The Astrophysical Journal 604 63 [10.1086/381731]
Yaqoob, T., I. M. George, T. R. Kallman, et al. U. Padmanabhan, K. A. Weaver, and T. J. Turner. 2003. Fe XXV and Fe XXVI Diagnostics of the Black Hole and Accretion Disk in Active Galaxies: Chandra Time-resolved Grating Spectroscopy of NGC 7314 The Astrophysical Journal 596 85 [10.1086/377687]
Benlloch, S., J. Wilms, R. Edelson, T. Yaqoob, and R. Staubert. 2001. Quasi-periodic Oscillation in Seyfert Galaxies: Significance Levels The Case of Markarian 766 The Astrophysical Journal 562 L121 [10.1086/338252]