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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Precise γ-ray timing and radio observations of 17 Fermi γ-ray pulsars
Astrophysical Journal, Supplement Series, Volume 194, No. 2, Article 17, Year 2011
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Description
We present precise phase-connected pulse timing solutions for 16 γ-ray-selected pulsars recently discovered using the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope 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 Swift 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 20ks 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 Chandra 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. © 2011. The American Astronomical Society. All rights reserved..
Authors & Co-Authors
Ray, Paul S.
United States, Washington, D.c.
U.s. Naval Research Laboratory
Kerr, Matthew T.
United States, Palo Alto
Stanford University
Parent, Damien
United States, Fairfax
George Mason University
United States, Washington, D.c.
U.s. Naval Research Laboratory
Abdo, Aous A.
United States, Washington, D.c.
National Academy of Sciences
United States, Washington, D.c.
U.s. Naval Research Laboratory
Guillemot, Lucas
Germany, Bonn
Max Planck Institute for Radio Astronomy
Ransom, Scott M.
United States, Charlottesville
National Radio Astronomy Observatory
Rea, Nanda
Spain, Barcelona
Csic - Instituto de Ciencias Del Espacio Ice
Wolff, Michael Th
United States, Washington, D.c.
U.s. Naval Research Laboratory
Roberts, Mallory S.E.
United States, Oakland
Eureka Scientific, Inc.
Camilo, Fernando
United States, New York
Columbia University
Freire, Paulo C.C.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Grove, J. Eric
United States, Washington, D.c.
U.s. Naval Research Laboratory
Harding, Alice K.
United States, Greenbelt
Nasa Goddard Space Flight Center
Johnston, Simon
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Keith, Michael J.
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Kramer, Michael
Germany, Bonn
Max Planck Institute for Radio Astronomy
United Kingdom, Manchester
The University of Manchester
Michelson, Peter F.
United States, Palo Alto
Stanford University
Romani, Roger W.R.
United States, Palo Alto
Stanford University
Saz-Parkinson, Pablo M.
United States, Santa Cruz
University of California, Santa Cruz
Thompson, David J.
United States, Greenbelt
Nasa Goddard Space Flight Center
Weltevrede, Patrick
United Kingdom, Manchester
The University of Manchester
Wood, Kent S.
United States, Washington, D.c.
U.s. Naval Research Laboratory
Statistics
Citations: 202
Authors: 22
Affiliations: 13
Identifiers
Doi:
10.1088/0067-0049/194/2/17
ISSN:
00670049
Study Design
Cohort Study