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Title: Discovery of gamma- and X-ray pulsations from the young and energetic PSR J1357$$-$$6429 with Fermi and XMM-Newton

Journal Article · · Astronomy and Astrophysics
 [1];  [2];  [3];  [4];  [1];  [5];  [6];  [7];  [8]; ;  [8];  [4];  [4];  [9];  [4];  [10];  [11];  [5];  [12];  [7] more »;  [13];  [14];  [12] « less
  1. Univ. Bordeaux (France)
  2. NASA Marshall Space Flight Center (MSFC), Huntsville, AL (United States)
  3. Univ. Tubingen (Germany)
  4. Australia Telescope National Facility, Epping NSW (Australia)
  5. Cagliari Astronomical Observatory, Capoterra (Italy)
  6. Columbia Univ., New York, NY (United States). Columbia Astrophysics Lab.
  7. Univ. Montpellier II (France). Lab. Univers. et Particules de Monpellier
  8. Max Planck Inst. for Radioastronomy, Bonn (Germany)
  9. Max Planck Inst. for Radioastronomy, Bonn (Germany); Univ. of Manchester (United Kingdom)
  10. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  11. George Mason Univ., Fairfax, VA (United States)
  12. Naval Research Lab. (NRL), Washington, DC (United States)
  13. Univ. of California, Santa Cruz, CA (United States)
  14. Univ. of Manchester (United Kingdom)
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Context. Since the launch of the Fermi satellite, the number of known gamma-ray pulsars has increased tenfold. Most gamma-ray detected pulsars are young and energetic, and many are associated with TeV sources. PSR J1357-6429 is a high spin-down power pulsar (È = 3.1 × 1036 erg s-1), discovered during the Parkes multibeam survey of the Galactic plane, with significant timing noise typical of very young pulsars. In the very-high-energy domain (E > 100 GeV), H.E.S.S. has reported the detection of the extended source HESS J1356-645 (intrinsic Gaussian width of 12') whose centroid lies 7' from PSR J1357-6429. Aims. We search for gamma- and X-ray pulsations from this pulsar, characterize the neutron star emission and explore the environment of PSR J1357-6429. Methods. Using a rotational ephemeris obtained with 74 observations made with the Parkes telescope at 1.4 GHz, we phase-fold more than two years of gamma-ray data acquired by the Large Area Telescope on-board Fermi as well as those collected with XMM-Newton, and perform gamma-ray spectral modeling. Results. Significant gamma- and X-ray pulsations are detected from PSR J1357-6429. The light curve in both bands shows one broad peak. Gamma-ray spectral analysis of the pulsed emission suggests that it is well described by a simple power-law of index 1.5 ± 0.3stat ± 0.3syst with an exponential cut-off at 0.8 ± 0.3stat ± 0.3syst GeV and an integral photon flux above 100 MeV of (6.5 ± 1.6stat ± 2.3syst) × 10-8 cm-2 s-1. The X-ray spectra obtained from the new data provide results consistent with previous work. Upper limits on the gamma-ray emission from its potential pulsar wind nebula (PWN) are also reported. Conclusions. Assuming a distance of 2.4 kpc, the Fermi LAT energy flux yields a gamma-ray luminosity for PSR J1357-6429 of Lγ = (2.13 ± 0.25stat ± 0.83syst) × 1034 erg s-1, consistent with an relationship. The Fermi non-detection of the pulsar wind nebula associated with HESS J1356-645 provides new constraints on the electron population responsible for the extended TeV emission.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1357196
Journal Information:
Astronomy and Astrophysics, Vol. 533; ISSN 0004-6361
Publisher:
EDP SciencesCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

References (26)

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Cited By (6)

Pulsar-Wind Nebulae and Magnetar Outflows: Observations at Radio, X-Ray, and Gamma-Ray Wavelengths journal March 2017
FERMI LARGE AREA TELESCOPE SECOND SOURCE CATALOG journal March 2012
THE SECOND FERMI LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS journal September 2013
Spectral characterization of the non-thermal X-ray emission of gamma-ray pulsars journal December 2019
The Second Fermi Large area Telescope Catalog of Gamma-Ray Pulsars text January 2013
Pulsar-wind nebulae and magnetar outflows: observations at radio, X-ray, and gamma-ray wavelengths text January 2017

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
gamma rays
pulsars
PSR J1357 / 6429