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