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Guillemot, L., Kramer, M., Johnson, T. J., Craig, H. A., Romani, R. W., Venter, C., Harding, A. K., Ferdman, R. D. 
ORCID: https://orcid.org/0000-0002-2223-1235, Stairs, I. H. and Kerr, M.
(2013)
Fermi LAT pulsed detection of PSR J0737-3039A in the double pulsar system.
Astrophysical Journal, 768 (2).
ISSN 0004-637X
Abstract
We report the Fermi Large Area Telescope discovery of gamma-ray pulsations from the 22.7 ms pulsar A in the double pulsar system J0737-3039A/B. This is the first mildly recycled millisecond pulsar (MSP) detected in the GeV domain. The 2.7 s companion object PSR J0737-3039B is not detected in gamma rays. PSR J0737-3039A is a faint gamma-ray emitter, so that its spectral properties are only weakly constrained; however, its measured efficiency is typical of other MSPs. The two peaks of the gamma-ray light curve are separated by roughly half a rotation and are well offset from the radio and X-ray emission, suggesting that the GeV radiation originates in a distinct part of the magnetosphere from the other types of emission. From the modeling of the radio and the gamma-ray emission profiles and the analysis of radio polarization data, we constrain the magnetic inclination a and the viewing angle zeta to be close to 90 degrees, which is consistent with independent studies of the radio emission from PSR J0737-3039A. A small misalignment angle between the pulsar's spin axis and the system's orbital axis is therefore favored, supporting the hypothesis that pulsar B was formed in a nearly symmetric supernova explosion as has been discussed in the literature already.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | stars gamma rays,general pulsars,individual pulsars (psr j0737-3039a, psr j0737-3039b) |
| Depositing User: | LivePure Connector |
| Date Deposited: | 10 Jul 2018 14:30 |
| Last Modified: | 22 Oct 2022 03:57 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/67562 |
| DOI: | 10.1088/0004-637X/768/2/169 |
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