DISCOVERY OF A HIGHLY ENERGETIC X-RAY PULSAR POWERING HESS J1813-178 IN THE YOUNG SUPERNOVA REMNANT G12.82-0.02
Journal Article
·
· Astrophysical Journal (Online)
- Columbia Astrophysics Laboratory, Columbia University, 550 West 120th Street, New York, NY 10027 (United States)
We report the discovery of 44.7 ms pulsations from the X-ray source CXOU J181335.1-174957 using data obtained with the XMM-Newton Observatory. PSR J1813-1749 lies near the center of the young radio supernova remnant G12.82-0.02, which overlaps the compact TeV source HESS J1813-178. This rotation-powered pulsar is the second most energetic in the Galaxy, with a spin-down luminosity of E-dot=(6.8{+-}2.7)x10{sup 37} erg s{sup -1}. In the rotating dipole model, the surface dipole magnetic field strength is B{sub s} = (2.7 {+-} 0.6) x 10{sup 12} G and the spin-down age {tau}{sub c}{identical_to}P/2P-dot=3.3-7.5 kyr, consistent with the location in the small, shell-type radio remnant. At an assumed distance of 4.7 kpc by association with an adjacent young stellar cluster, the efficiency of PSR J1813-1749 in converting spin-down luminosity to radiation is {approx}0.03% for its 2-10 keV flux, {approx}0.1% for its 20-100 keV INTEGRAL flux, and {approx}0.07% for the >200 GeV emission of HESS J1813-178, making it a likely power source for the latter. The nearby young stellar cluster is possibly the birthplace of the pulsar progenitor, as well as an additional source of seed photons for inverse Compton scattering to TeV energies.
- OSTI ID:
- 21313771
- Journal Information:
- Astrophysical Journal (Online), Journal Name: Astrophysical Journal (Online) Journal Issue: 2 Vol. 700; ISSN 1538-4357
- Country of Publication:
- United States
- Language:
- English
Similar Records
SPIN-DOWN MEASUREMENT OF PSR J1813-1749: THE ENERGETIC PULSAR POWERING HESS J1813-178
MULTIBAND NONTHERMAL RADIATIVE PROPERTIES OF HESS J1813-178
NuSTAR discovery of a young, energetic pulsar associated with the luminous gamma-ray source HESS J1640–465
Journal Article
·
Sun Jul 01 00:00:00 EDT 2012
· Astrophysical Journal Letters
·
OSTI ID:22047713
MULTIBAND NONTHERMAL RADIATIVE PROPERTIES OF HESS J1813-178
Journal Article
·
Tue Jul 20 00:00:00 EDT 2010
· Astrophysical Journal
·
OSTI ID:21455124
NuSTAR discovery of a young, energetic pulsar associated with the luminous gamma-ray source HESS J1640–465
Journal Article
·
Fri Jun 20 00:00:00 EDT 2014
· Astrophysical Journal
·
OSTI ID:22356583