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Title: Discovery of Pulsed Gamma Rays from the Young Radio Pulsar PSR J1028-5819 with the Fermi Large Area Telescope

Abstract

Radio pulsar PSR J1028-5819 was recently discovered in a high-frequency search (at 3.1 GHz) in the error circle of the Energetic Gamma-Ray Experiment Telescope (EGRET) source 3EG J1027-5817. The spin-down power of this young pulsar is great enough to make it very likely the counterpart for the EGRET source. We report here the discovery of {gamma}-ray pulsations from PSR J1028-5819 in early observations by the Large Area Telescope (LAT) on the Fermi Gamma-Ray Space Telescope. The {gamma}-ray light curve shows two sharp peaks having phase separation of 0.460 {+-} 0.004, trailing the very narrow radio pulse by 0.200 {+-} 0.003 in phase, very similar to that of other known {gamma}-ray pulsars. The measured {gamma}-ray flux gives an efficiency for the pulsar of {approx}10-20% (for outer magnetosphere beam models). No evidence of a surrounding pulsar wind nebula is seen in the current Fermi data but limits on associated emission are weak because the source lies in a crowded region with high background emission. However, the improved angular resolution afforded by the LAT enables the disentanglement of the previous COS-B and EGRET source detections into at least two distinct sources, one of which is now identified as PSR J1028-5819.

Authors:
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Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1046395
Report Number(s):
SLAC-PUB-13623
Journal ID: ISSN 0004-637X; ASJOAB; arXiv:0903.1602; TRN: US201215%%314
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 695; Journal Issue: 1; Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; EFFICIENCY; PULSARS; PULSATIONS; RESOLUTION; TELESCOPES; Astrophysics,OTHER

Citation Formats

Abdo, Aous A, /Naval Research Lab, Wash., D.C., Ackermann, M, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Atwood, W B, /UC, Santa Cruz, Baldini, L, /INFN, Pisa, Ballet, J, /DAPNIA, Saclay, Barbiellini, Guido, /INFN, Trieste /Trieste U., Baring, Matthew G, /Rice U., Bastieri, Denis, /INFN, Padua /Padua U., Baughman, B M, /Ohio State U., Bechtol, K, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bellazzini, R, /INFN, Pisa, Berenji, B, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bloom, Elliott D, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bonamente, E, /INFN, Perugia /Perugia U., Borgland, A W, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bregeon, J, /INFN, Pisa, Brez, A, /INFN, Pisa, Brigida, M, /Bari U. /INFN, Bari, Bruel, P, /Ecole Polytechnique, Burnett, Thompson H, /Washington U., Seattle, Caliandro, G A, /Bari U. /INFN, Bari /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /IASF, Milan /IASF, Milan /DAPNIA, Saclay /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /George Mason U. /Naval Research Lab, Wash., D.C. /NASA, Goddard /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Sonoma State U. /Stockholm U., OKC /Royal Inst. Tech., Stockholm /Stockholm U. /Naval Research Lab, Wash., D.C. /INFN, Trieste /Bari U. /INFN, Bari /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /NASA, Goddard /UC, Santa Cruz /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /CENBG, Gradignan /CENBG, Gradignan /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Bari U. /INFN, Bari /Ecole Polytechnique /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /INFN, Trieste /Hiroshima U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., and /more authors. Discovery of Pulsed Gamma Rays from the Young Radio Pulsar PSR J1028-5819 with the Fermi Large Area Telescope. United States: N. p., 2009. Web. doi:10.1088/0004-637X/695/1/L72.
Abdo, Aous A, /Naval Research Lab, Wash., D.C., Ackermann, M, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Atwood, W B, /UC, Santa Cruz, Baldini, L, /INFN, Pisa, Ballet, J, /DAPNIA, Saclay, Barbiellini, Guido, /INFN, Trieste /Trieste U., Baring, Matthew G, /Rice U., Bastieri, Denis, /INFN, Padua /Padua U., Baughman, B M, /Ohio State U., Bechtol, K, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bellazzini, R, /INFN, Pisa, Berenji, B, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bloom, Elliott D, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bonamente, E, /INFN, Perugia /Perugia U., Borgland, A W, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bregeon, J, /INFN, Pisa, Brez, A, /INFN, Pisa, Brigida, M, /Bari U. /INFN, Bari, Bruel, P, /Ecole Polytechnique, Burnett, Thompson H, /Washington U., Seattle, Caliandro, G A, /Bari U. /INFN, Bari /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /IASF, Milan /IASF, Milan /DAPNIA, Saclay /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /George Mason U. /Naval Research Lab, Wash., D.C. /NASA, Goddard /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Sonoma State U. /Stockholm U., OKC /Royal Inst. Tech., Stockholm /Stockholm U. /Naval Research Lab, Wash., D.C. /INFN, Trieste /Bari U. /INFN, Bari /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /NASA, Goddard /UC, Santa Cruz /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /CENBG, Gradignan /CENBG, Gradignan /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Bari U. /INFN, Bari /Ecole Polytechnique /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /INFN, Trieste /Hiroshima U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., & /more authors. Discovery of Pulsed Gamma Rays from the Young Radio Pulsar PSR J1028-5819 with the Fermi Large Area Telescope. United States. https://doi.org/10.1088/0004-637X/695/1/L72
Abdo, Aous A, /Naval Research Lab, Wash., D.C., Ackermann, M, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Atwood, W B, /UC, Santa Cruz, Baldini, L, /INFN, Pisa, Ballet, J, /DAPNIA, Saclay, Barbiellini, Guido, /INFN, Trieste /Trieste U., Baring, Matthew G, /Rice U., Bastieri, Denis, /INFN, Padua /Padua U., Baughman, B M, /Ohio State U., Bechtol, K, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bellazzini, R, /INFN, Pisa, Berenji, B, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bloom, Elliott D, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bonamente, E, /INFN, Perugia /Perugia U., Borgland, A W, /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., Bregeon, J, /INFN, Pisa, Brez, A, /INFN, Pisa, Brigida, M, /Bari U. /INFN, Bari, Bruel, P, /Ecole Polytechnique, Burnett, Thompson H, /Washington U., Seattle, Caliandro, G A, /Bari U. /INFN, Bari /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /IASF, Milan /IASF, Milan /DAPNIA, Saclay /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /George Mason U. /Naval Research Lab, Wash., D.C. /NASA, Goddard /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Sonoma State U. /Stockholm U., OKC /Royal Inst. Tech., Stockholm /Stockholm U. /Naval Research Lab, Wash., D.C. /INFN, Trieste /Bari U. /INFN, Bari /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /NASA, Goddard /UC, Santa Cruz /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /CENBG, Gradignan /CENBG, Gradignan /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Bari U. /INFN, Bari /Ecole Polytechnique /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /INFN, Trieste /Hiroshima U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept., and /more authors. 2009. "Discovery of Pulsed Gamma Rays from the Young Radio Pulsar PSR J1028-5819 with the Fermi Large Area Telescope". United States. https://doi.org/10.1088/0004-637X/695/1/L72. https://www.osti.gov/servlets/purl/1046395.
@article{osti_1046395,
title = {Discovery of Pulsed Gamma Rays from the Young Radio Pulsar PSR J1028-5819 with the Fermi Large Area Telescope},
author = {Abdo, Aous A and /Naval Research Lab, Wash., D.C. and Ackermann, M and /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. and Atwood, W B and /UC, Santa Cruz and Baldini, L and /INFN, Pisa and Ballet, J and /DAPNIA, Saclay and Barbiellini, Guido and /INFN, Trieste /Trieste U. and Baring, Matthew G and /Rice U. and Bastieri, Denis and /INFN, Padua /Padua U. and Baughman, B M and /Ohio State U. and Bechtol, K and /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. and Bellazzini, R and /INFN, Pisa and Berenji, B and /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. and Bloom, Elliott D and /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. and Bonamente, E and /INFN, Perugia /Perugia U. and Borgland, A W and /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. and Bregeon, J and /INFN, Pisa and Brez, A and /INFN, Pisa and Brigida, M and /Bari U. /INFN, Bari and Bruel, P and /Ecole Polytechnique and Burnett, Thompson H and /Washington U., Seattle and Caliandro, G A and /Bari U. /INFN, Bari /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /IASF, Milan /IASF, Milan /DAPNIA, Saclay /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /George Mason U. /Naval Research Lab, Wash., D.C. /NASA, Goddard /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Sonoma State U. /Stockholm U., OKC /Royal Inst. Tech., Stockholm /Stockholm U. /Naval Research Lab, Wash., D.C. /INFN, Trieste /Bari U. /INFN, Bari /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /NASA, Goddard /UC, Santa Cruz /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /CENBG, Gradignan /CENBG, Gradignan /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Bari U. /INFN, Bari /Ecole Polytechnique /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /INFN, Trieste /Hiroshima U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. and /more authors.},
abstractNote = {Radio pulsar PSR J1028-5819 was recently discovered in a high-frequency search (at 3.1 GHz) in the error circle of the Energetic Gamma-Ray Experiment Telescope (EGRET) source 3EG J1027-5817. The spin-down power of this young pulsar is great enough to make it very likely the counterpart for the EGRET source. We report here the discovery of {gamma}-ray pulsations from PSR J1028-5819 in early observations by the Large Area Telescope (LAT) on the Fermi Gamma-Ray Space Telescope. The {gamma}-ray light curve shows two sharp peaks having phase separation of 0.460 {+-} 0.004, trailing the very narrow radio pulse by 0.200 {+-} 0.003 in phase, very similar to that of other known {gamma}-ray pulsars. The measured {gamma}-ray flux gives an efficiency for the pulsar of {approx}10-20% (for outer magnetosphere beam models). No evidence of a surrounding pulsar wind nebula is seen in the current Fermi data but limits on associated emission are weak because the source lies in a crowded region with high background emission. However, the improved angular resolution afforded by the LAT enables the disentanglement of the previous COS-B and EGRET source detections into at least two distinct sources, one of which is now identified as PSR J1028-5819.},
doi = {10.1088/0004-637X/695/1/L72},
url = {https://www.osti.gov/biblio/1046395}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 695,
place = {United States},
year = {Fri May 15 00:00:00 EDT 2009},
month = {Fri May 15 00:00:00 EDT 2009}
}