Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

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

Abstract

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.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [1];  [9];  [5];  [10];  [11];  [5];  [8];  [10];  [1];  [1];  [1]
+ Show Author Affiliations
  1. NASA Marshall Space Flight Center (MSFC), Huntsville, AL (United States)
  2. Stanford Univ., CA (United States)
  3. National Inst. of Nuclear Physics (INFN), Pisa (Italy); Univ. of California, Santa Cruz, CA (United States); Univ. of Pisa (Italy)
  4. Univ. of California, Santa Cruz, CA (United States); Istituto Nazionale di Astrofisica (INAF), Milano (Italy); Univ. of Pavia (Italy)
  5. Univ. of California, Santa Cruz, CA (United States)
  6. Naval Research Lab. (NRL), Washington, DC (United States)
  7. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology
  8. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  9. National Inst. of Astrophysics (Mexico)
  10. Max Planck Inst. fur Extraterrestrische Physik, Garching (Germany)
  11. Istituto Nazionale di Astrofisica (INAF), Milano (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Pavia (Italy); Istituto Universitario di Studi Superiori (IUSS), Pavia (Italy)
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1356779
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal
Additional Journal Information:
Journal Volume: 743; Journal Issue: 1; Journal ID: ISSN 0004-637X
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

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., and Tennant, Allyn F. The Identification Of The X-Ray Counterpart To PSR J2021+4026. United States: N. p., 2011. Web. doi:10.1088/0004-637X/743/1/74.
Copy to clipboard
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. The Identification Of The X-Ray Counterpart To PSR J2021+4026. United States. https://doi.org/10.1088/0004-637X/743/1/74
Copy to clipboard
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., and Tennant, Allyn F. Wed . "The Identification Of The X-Ray Counterpart To PSR J2021+4026". United States. https://doi.org/10.1088/0004-637X/743/1/74. https://www.osti.gov/servlets/purl/1356779.
Copy to clipboard
@article{osti_1356779,
title = {The Identification Of The X-Ray Counterpart To PSR J2021+4026},
author = {Weisskopf, Martin C. and Romani, Roger W. and Razzano, Massimiliano and Belfiore, Andrea and Saz Parkinson, Pablo and Ray, Paul S. and Kerr, Matthew and Harding, Alice and Swartz, Douglas A. and Carramiñana, Alberto and Ziegler, Marcus and Becker, Werner and De Luca, Andrea and Dormody, Michael and Thompson, David J. and Kanbach, Gottfried and Elsner, Ronald F. and O'Dell, Stephen L. and Tennant, Allyn F.},
abstractNote = {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.},
doi = {10.1088/0004-637X/743/1/74},
journal = {The Astrophysical Journal},
number = 1,
volume = 743,
place = {United States},
year = {Wed Nov 23 00:00:00 EST 2011},
month = {Wed Nov 23 00:00:00 EST 2011}
}
Copy to clipboard
Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1088/0004-637X/743/1/74
Copyright Statement
Other availability
Search WorldCat Search WorldCat to find libraries that may hold this journal
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Works referenced in this record:

FERMI /LARGE AREA TELESCOPE BRIGHT GAMMA-RAY SOURCE LIST
journal, June 2009

  • Abdo, A. A.; Ackermann, M.; Ajello, M.
  • The Astrophysical Journal Supplement Series, Vol. 183, Issue 1
  • DOI: 10.1088/0067-0049/183/1/46

Detection of 16 Gamma-Ray Pulsars Through Blind Frequency Searches Using the Fermi LAT
journal, July 2009

PSR J1907+0602: A RADIO-FAINT GAMMA-RAY PULSAR POWERING A BRIGHT TeV PULSAR WIND NEBULA
journal, February 2010

THE FIRST FERMI LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS
journal, March 2010

  • Abdo, A. A.; Ackermann, M.; Ajello, M.
  • The Astrophysical Journal Supplement Series, Vol. 187, Issue 2
  • DOI: 10.1088/0067-0049/187/2/460

FERMI LARGE AREA TELESCOPE FIRST SOURCE CATALOG
journal, May 2010

  • Abdo, A. A.; Ackermann, M.; Ajello, M.
  • The Astrophysical Journal Supplement Series, Vol. 188, Issue 2
  • DOI: 10.1088/0067-0049/188/2/405

The Fermi Gamma-Ray Space Telescope Discovers the Pulsar in the Young Galactic Supernova Remnant CTA 1
journal, November 2008

Pair creation above pulsar polar caps - Geometrical structure and energetics of slot gaps
journal, March 1983

Pair formation above pulsar polar caps - Structure of the low altitude acceleration zone
journal, July 1979

  • Arons, J.; Scharlemann, E. T.
  • The Astrophysical Journal, Vol. 231
  • DOI: 10.1086/157250

X-Ray Emission from Pulsars and Neutron Stars
book, January 2009

A Multiwavelength Search for a Counterpart of the Brightest Unidentified Gamma‐Ray Source 3EG J2020+4017 (2CG 078+2)
journal, November 2004

  • Becker, Werner; Weisskopf, Martin C.; Arzoumanian, Zaven
  • The Astrophysical Journal, Vol. 615, Issue 2
  • DOI: 10.1086/424563

The nature of the  -ray source 2EG J2020+4026 (2CG078+2)
journal, August 1996

  • Brazier, K. T. S.; Kanbach, G.; Carraminnana, A.
  • Monthly Notices of the Royal Astronomical Society, Vol. 281, Issue 3
  • DOI: 10.1093/mnras/281.3.1033

RADIO DETECTION OF LAT PSRs J1741-2054 AND J2032+4127: NO LONGER JUST GAMMA-RAY PULSARS
journal, October 2009

X-Ray Pulsations from the Radio-Quiet Gamma-Ray Pulsar in cta 1
journal, November 2010

Energetic radiation from rapidly spinning pulsars. I - Outer magnetosphere gaps. II - VELA and Crab
journal, January 1986

  • Cheng, K. S.; Ho, C.; Ruderman, M.
  • The Astrophysical Journal, Vol. 300
  • DOI: 10.1086/163829

The Statistics of Gamma‐Ray Pulsars
journal, May 1998

  • Cheng, K. S.; Zhang, L.
  • The Astrophysical Journal, Vol. 498, Issue 1
  • DOI: 10.1086/305531

Gamma-Ray Pulsars: Emission from Extended Polar CAP Cascades
journal, February 1996

  • Daugherty, Joseph K.; Harding, Alice K.
  • The Astrophysical Journal, Vol. 458
  • DOI: 10.1086/176811

On the Polar Caps of the Three Musketeers
journal, April 2005

  • De Luca, A.; Caraveo, P. A.; Mereghetti, S.
  • The Astrophysical Journal, Vol. 623, Issue 2
  • DOI: 10.1086/428567

H I in the Galaxy
journal, September 1990

Discovery of soft X-ray pulsations from the γ-ray source Geminga
journal, May 1992

  • Halpern, J. P.; Holt, S. S.
  • Nature, Vol. 357, Issue 6375
  • DOI: 10.1038/357222a0

Pulsar Polar Cap Heating and Surface Thermal X‐Ray Emission. I. Curvature Radiation Pair Fronts
journal, August 2001

  • Harding, Alice K.; Muslimov, Alexander G.
  • The Astrophysical Journal, Vol. 556, Issue 2
  • DOI: 10.1086/321589

Pulsar Slot Gaps and Unidentified Egret Sources
journal, June 2005

High‐Altitude Emission from Pulsar Slot Gaps: The Crab Pulsar
journal, June 2008

  • Harding, Alice K.; Stern, Julie V.; Dyks, Jaroslaw
  • The Astrophysical Journal, Vol. 680, Issue 2
  • DOI: 10.1086/588037

The Third EGRET Catalog of High‐Energy Gamma‐Ray Sources
journal, July 1999

  • Hartman, R. C.; Bertsch, D. L.; Bloom, S. D.
  • The Astrophysical Journal Supplement Series, Vol. 123, Issue 1
  • DOI: 10.1086/313231

The true extent of the Gamma Cygni supernova remnant
journal, September 1977

  • Higgs, L. A.; Landecker, T. L.; Roger, R. S.
  • The Astronomical Journal, Vol. 82
  • DOI: 10.1086/112114

Model X‐Ray Spectra of Magnetic Neutron Stars with Hydrogen Atmospheres
journal, September 2008

  • Ho, Wynn C. G.; Potekhin, Alexander Y.; Chabrier, Gilles
  • The Astrophysical Journal Supplement Series, Vol. 178, Issue 1
  • DOI: 10.1086/589238

Long-term timing observations of 374 pulsars
journal, October 2004

tempo2, a new pulsar-timing package - I. An overview: tempo2, a new pulsar-timing package - I. Overview
journal, May 2006

A Refined Ephemeris and Phase‐resolved X‐Ray Spectroscopy of the Geminga Pulsar
journal, November 2005

  • Jackson, M. S.; Halpern, J. P.
  • The Astrophysical Journal, Vol. 633, Issue 2
  • DOI: 10.1086/491615

Deep optical observations of the supernova remnant G 78.2+2.1
journal, September 2003

The USNO-B Catalog
journal, February 2003

  • Monet, David G.; Levine, Stephen E.; Canzian, Blaise
  • The Astronomical Journal, Vol. 125, Issue 2
  • DOI: 10.1086/345888

High‐Altitude Particle Acceleration and Radiation in Pulsar Slot Gaps
journal, May 2004

  • Muslimov, Alex G.; Harding, Alice K.
  • The Astrophysical Journal, Vol. 606, Issue 2
  • DOI: 10.1086/383079

New X-Ray Observations of the Geminga Pulsar wind Nebula
journal, April 2010

  • Pavlov, George G.; Bhattacharyya, Sudip; Zavlin, Vyacheslav E.
  • The Astrophysical Journal, Vol. 715, Issue 1
  • DOI: 10.1088/0004-637X/715/1/66

Neutron Star Atmospheres
book, January 1995

Fourier Techniques for Very Long Astrophysical Time-Series Analysis
journal, September 2002

  • Ransom, Scott M.; Eikenberry, Stephen S.; Middleditch, John
  • The Astronomical Journal, Vol. 124, Issue 3
  • DOI: 10.1086/342285

PRECISE γ-RAY TIMING AND RADIO OBSERVATIONS OF 17 FERMI γ-RAY PULSARS
journal, April 2011

Gamma-Ray Pulsars: Radiation Processes in the Outer Magnetosphere
journal, October 1996

  • Romani, Roger W.
  • The Astrophysical Journal, Vol. 470
  • DOI: 10.1086/177878

Theory of pulsars - Polar caps, sparks, and coherent microwave radiation
journal, February 1975

  • Ruderman, M. A.; Sutherland, P. G.
  • The Astrophysical Journal, Vol. 196
  • DOI: 10.1086/153393

The Two Micron All Sky Survey (2MASS)
journal, February 2006

  • Skrutskie, M. F.; Cutri, R. M.; Stiening, R.
  • The Astronomical Journal, Vol. 131, Issue 2
  • DOI: 10.1086/498708

Second COS B catalog of high-energy gamma-ray sources
journal, January 1981

  • Swanenburg, B. N.; Bennett, K.; Bignami, G. F.
  • The Astrophysical Journal, Vol. 243
  • DOI: 10.1086/183445

Pulse Profiles, Spectra, and Polarization Characteristics of Nonthermal Emissions from the Crab‐like Pulsars
journal, November 2007

  • Takata, J.; Chang, H. ‐K.
  • The Astrophysical Journal, Vol. 670, Issue 1
  • DOI: 10.1086/521785

Chandra Observation of NGC 6822
journal, August 2006

  • Tennant, Allyn F.
  • The Astronomical Journal, Vol. 132, Issue 3
  • DOI: 10.1086/506511

Gamma ray pulsars: Observations
conference, January 2001

  • Thompson, David J.
  • The international symposium on high energy gamma-ray astronomy, AIP Conference Proceedings
  • DOI: 10.1063/1.1370784

The Orthogonal Parallel Imaging Transfer Camera
book, January 2004

Subshell Photoionization Cross Sections and Ionization Energies of Atoms and Ions from He to Zn
journal, November 1993

  • Verner, D. A.; Yakovlev, D. G.; Band, I. M.
  • Atomic Data and Nuclear Data Tables, Vol. 55, Issue 2
  • DOI: 10.1006/adnd.1993.1022

A Search for the X‐Ray Counterpart of the Unidentified γ‐Ray Source 3EG J2020+4017 (2CG078+2)
journal, November 2006

  • Weisskopf, Martin C.; Swartz, Douglas A.; Carraminana, Alberto
  • The Astrophysical Journal, Vol. 652, Issue 1
  • DOI: 10.1086/508339

On the Absorption of X‐Rays in the Interstellar Medium
journal, October 2000

  • Wilms, J.; Allen, A.; McCray, R.
  • The Astrophysical Journal, Vol. 542, Issue 2
  • DOI: 10.1086/317016

Gamma-Ray Pulsars: Beaming Evolution, Statistics, and Unidentified EGRET Sources
journal, August 1995

  • Yadigaroglu, I. -A.; Romani, Roger W.
  • The Astrophysical Journal, Vol. 449
  • DOI: 10.1086/176047

Cooling rates of neutron stars and the young neutron star in the Cassiopeia A supernova remnant: Young Cas A neutron star
journal, November 2010

  • Yakovlev, Dmitry G.; Ho, Wynn C. G.; Shternin, Peter S.
  • Monthly Notices of the Royal Astronomical Society, Vol. 411, Issue 3
  • DOI: 10.1111/j.1365-2966.2010.17827.x
    Sort by:
    [ × clear filter / sort ]

    Works referencing / citing this record:

    THE SECOND FERMI LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS
    journal, September 2013

    • Abdo, A. A.; Ajello, M.; Allafort, A.
    • The Astrophysical Journal Supplement Series, Vol. 208, Issue 2
    • DOI: 10.1088/0067-0049/208/2/17

    PSR J2021+4026 IN THE GAMMA CYGNI REGION: THE FIRST VARIABLE γ-RAY PULSAR SEEN BY THE Fermi LAT
    journal, October 2013

    Mode Change of a Gamma-Ray Pulsar, PSR J2021+4026
    journal, June 2017

    X-Ray Study of Variable Gamma-Ray Pulsar PSR J2021+4026
    journal, March 2018

    AGILE Study of the Gamma-Ray Emission from the SNR G78.2+2.1 (Gamma Cygni)
    journal, June 2019

    The Second Fermi Large area Telescope Catalog of Gamma-Ray Pulsars
    text, January 2013

    • Abdo, A. A.; Ajello, M.; Allafort, A.
    • Deutsches Elektronen-Synchrotron, DESY, Hamburg
    • DOI: 10.3204/desy-2014-00864

    PSR J2021+4026 IN THE GAMMA CYGNI REGION: THE FIRST VARIABLE γ-RAY PULSAR SEEN BY THE Fermi LAT
    text, January 2013

    • Allafort, A.; Baldini, L.; Ballet, J.
    • Deutsches Elektronen-Synchrotron, DESY, Hamburg
    • DOI: 10.3204/desy-2014-01043

    Mode change of a gamma-ray pulsar, PSR J2021+4026
    text, January 2017

    X-ray study of Variable Gamma-ray Pulsar PSR J2021+4026
    text, January 2018

    AGILE study of the gamma-ray emission from the SNR G78.2+2.1 (Gamma Cygni)
    text, January 2019

      Sort by:
      [ × clear filter / sort ]

      Similar Records in DOE PAGES and OSTI.GOV collections: