The Identification Of The X-Ray Counterpart To PSR J2021+4026

Weisskopf, Martin C.; Romani, Roger W.; Razzano, Massimiliano; Belfiore, Andrea; Saz Parkinson, Pablo; Ray, Paul S.; Kerr, Matthew; Harding, Alice; Swartz, Douglas A.; Carramiñana, Alberto; Ziegler, Marcus; Becker, Werner; De Luca, Andrea; Dormody, Michael; Thompson, David J.; Kanbach, Gottfried; Elsner, Ronald F.; O'Dell, Stephen L.; Tennant, Allyn F.

doi:10.1088/0004-637X/743/1/74

Title: The Identification Of The X-Ray Counterpart To PSR J2021+4026

Journal Article · Wed Nov 23 00:00:00 EST 2011 · The Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/743/1/74· OSTI ID:1356779

Weisskopf, Martin C. ^[1]; Romani, Roger W. ^[2]; Razzano, Massimiliano ^[3]; Belfiore, Andrea ^[4]; Saz Parkinson, Pablo ^[5]; Ray, Paul S. ^[6]; Kerr, Matthew ^[7]; Harding, Alice ^[8]; Swartz, Douglas A. ^[1]; Carramiñana, Alberto ^[9]; Ziegler, Marcus ^[5]; Becker, Werner ^[10]; De Luca, Andrea ^[11]; Dormody, Michael ^[5]; Thompson, David J. ^[8]; Kanbach, Gottfried ^[10]; Elsner, Ronald F. ^[1]; O'Dell, Stephen L. ^[1]; Tennant, Allyn F. ^[1]

NASA Marshall Space Flight Center (MSFC), Huntsville, AL (United States)
Stanford Univ., CA (United States)
National Inst. of Nuclear Physics (INFN), Pisa (Italy); Univ. of California, Santa Cruz, CA (United States); Univ. of Pisa (Italy)
Univ. of California, Santa Cruz, CA (United States); Istituto Nazionale di Astrofisica (INAF), Milano (Italy); Univ. of Pavia (Italy)
Univ. of California, Santa Cruz, CA (United States)
Naval Research Lab. (NRL), Washington, DC (United States)
Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology
NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
National Inst. of Astrophysics (Mexico)
Max Planck Inst. fur Extraterrestrische Physik, Garching (Germany)
Istituto Nazionale di Astrofisica (INAF), Milano (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Pavia (Italy); Istituto Universitario di Studi Superiori (IUSS), Pavia (Italy)

We report the probable identification of the X-ray counterpart to the γ-ray pulsar PSR J2021+4026 using imaging with the Chandra X-ray Observatory ACIS and timing analysis with the Fermi satellite. Given the statistical and systematic errors, the positions determined by both satellites are coincident. The X-ray source position is R.A. 20h21m30s.733, Decl. +40°26'46.04" (J2000) with an estimated uncertainty of 1."3 combined statistical and systematic error. Moreover, both the X-ray to γ-ray and the X-ray to optical flux ratios are sensible assuming a neutron star origin for the X-ray flux. The X-ray source has no cataloged infrared-to-visible counterpart and, through new observations, we set upper limits to its optical emission of i' > 23.0 mag and r' > 25.2 mag. The source exhibits an X-ray spectrum with most likely both a powerlaw and a thermal component. We also report on the X-ray and visible light properties of the 43 other sources detected in our Chandra observation.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1356779

Journal Information:: The Astrophysical Journal, Vol. 743, Issue 1; ISSN 0004-637X

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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THE SECOND FERMI LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS Abdo, A. A.; Ajello, M.; Allafort, A. The Astrophysical Journal Supplement Series, Vol. 208, Issue 2 https://doi.org/10.1088/0067-0049/208/2/17	journal	September 2013
PSR J2021+4026 IN THE GAMMA CYGNI REGION: THE FIRST VARIABLE γ-RAY PULSAR SEEN BY THE Fermi LAT Allafort, A.; Baldini, L.; Ballet, J. The Astrophysical Journal, Vol. 777, Issue 1 https://doi.org/10.1088/2041-8205/777/1/l2	journal	October 2013
Mode Change of a Gamma-Ray Pulsar, PSR J2021+4026 Zhao, J.; Ng, C. W.; Lin, L. C. C. The Astrophysical Journal, Vol. 842, Issue 1 https://doi.org/10.3847/1538-4357/aa74d8	journal	June 2017
X-Ray Study of Variable Gamma-Ray Pulsar PSR J2021+4026 Wang, H. H.; Takata, J.; Hu, C. -P. The Astrophysical Journal, Vol. 856, Issue 2 https://doi.org/10.3847/1538-4357/aab202	journal	March 2018
AGILE Study of the Gamma-Ray Emission from the SNR G78.2+2.1 (Gamma Cygni) Piano, G.; Cardillo, M.; Pilia, M. The Astrophysical Journal, Vol. 878, Issue 1 https://doi.org/10.3847/1538-4357/ab1f69	journal	June 2019
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PSR J2021+4026 IN THE GAMMA CYGNI REGION: THE FIRST VARIABLE γ-RAY PULSAR SEEN BY THE Fermi LAT Allafort, A.; Baldini, L.; Ballet, J. Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/desy-2014-01043	text	January 2013
Mode change of a gamma-ray pulsar, PSR J2021+4026 Zhao, J.; Ng, C. W.; Lin, L. C. C. arXiv https://doi.org/10.48550/arxiv.1706.00236	text	January 2017
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AGILE study of the gamma-ray emission from the SNR G78.2+2.1 (Gamma Cygni) Piano, G.; Cardillo, M.; Pilia, M. arXiv https://doi.org/10.48550/arxiv.1905.01255	text	January 2019

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