Precise γ-ray timing and radio observations of 17 <i>FERMI</i> γ-ray pulsars [electronic resource]
Gamma Rays: Stars; Pulsars: General; Radio Continuum: Stars; X-Rays: Stars.
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| Online Access: |
Online Access (via OSTI) |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2011.
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| Subjects: |
| Summary: | Gamma Rays: Stars; Pulsars: General; Radio Continuum: Stars; X-Rays: Stars. |
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| Abstract: | Here, we present precise phase-connected pulse timing solutions for 16 γ-ray-selected pulsars recently discovered using the Large Area Telescope (LAT) on the <i>Fermi Gamma-ray Space Telescope</i> plus one very faint radio pulsar (PSR J1124–5916) that is more effectively timed with the LAT. We describe the analysis techniques including a maximum likelihood method for determining pulse times of arrival from unbinned photon data. A major result of this work is improved position determinations, which are crucial for multiwavelength follow-up. For most of the pulsars, we overlay the timing localizations on X-ray images from <i>Swift</i> and describe the status of X-ray counterpart associations. We report glitches measured in PSRs J0007+7303, J1124–5916, and J1813–1246. We analyze a new 20 ks Chandra ACIS observation of PSR J0633+0632 that reveals an arcminute-scale X-ray nebula extending to the south of the pulsar. We were also able to precisely localize the X-ray point source counterpart to the pulsar and find a spectrum that can be described by an absorbed blackbody or neutron star atmosphere with a hard power-law component. Another <i>Chandra</i> ACIS image of PSR J1732–3131 reveals a faint X-ray point source at a location consistent with the timing position of the pulsar. Finally, we present a compilation of new and archival searches for radio pulsations from each of the γ-ray-selected pulsars as well as a new Parkes radio observation of PSR J1124–5916 to establish the γ-ray to radio phase offset. |
| Item Description: | Published through SciTech Connect. 04/29/2011. Astrophysical Journal, Supplement Series 194 2 ISSN 0067-0049 AM. Paul S. Ray; M. Kerr; D. Parent; A. A. Abdo; L. Guillemot; S. M. Ransom; N. Rea; M. T. Wolff; A. Makeev; M. S. E. Roberts; F. Camilo; M. Dormody; P. C. C. Freire; J. E. Grove; C. Gwon; A. K. Harding; S. Johnston; M. Keith; M. Kramer; P. F. Michelson; R. W. Romani; P. M. Saz Parkinson; D. J. Thompson; P. Weltevrede; K. S. Wood; M. Ziegler. |
| Physical Description: | Article No. 17 : digital, PDF file. |