Fermi LAT pulsed detection of PSR J0737-3039A in the double pulsar system

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

Full text not available from this repository.


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

Actions (login required)

View Item View Item