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Title: DISCOVERY OF X-RAY PULSATIONS FROM THE INTEGRAL SOURCE IGR J11014–6103

We report the discovery of PSR J1101–6101, a 62.8 ms pulsar in IGR J11014–6103, a hard X-ray source with a jet and a cometary tail that strongly suggests it is moving away from the center of the supernova remnant (SNR) MSH 11–61A at v > 1000 km s{sup –1}. Two XMM-Newton observations were obtained with the EPIC pn in small window mode, resulting in the measurement of its spin-down luminosity E-dot =1.36×10{sup 36} erg s{sup –1}, characteristic age τ {sub c} = 116 kyr, and surface magnetic field strength B{sub s} = 7.4 × 10{sup 11} G. In comparison to τ {sub c}, the 10-30 kyr age estimated for MSH 11–61A suggests that the pulsar was born in the SNR with initial period in the range 54 ≤ P {sub 0} ≤ 60 ms. PSR J1101–6101 is the least energetic of the 15 rotation-powered pulsars detected by INTEGRAL, and has a high efficiency of hard X-ray radiation and jet power. We examine the shape of the cometary nebula in a Chandra image, which is roughly consistent with a bow shock at the velocity inferred from the SNR age and the pulsar's E-dot . However, its structure differs in detail from the classic bow shock,more » and we explore possible reasons for this.« less
Authors:
; ;  [1] ;  [2] ;  [3] ;  [4] ; ;  [5] ;  [6]
  1. Columbia Astrophysics Laboratory, Columbia University, 550 West 120th Street, New York, NY 10027 (United States)
  2. Space Sciences Laboratory, 7 Gauss Way, University of California, Berkeley, CA 94720-7450 (United States)
  3. Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong (China)
  4. Georgia College and State University, CBX 82, Milledgeville, GA 31061 (United States)
  5. Laboratoire AIM (UMR-E 9005 CEA/DSM-CNRS-Université Paris Diderot), Irfu/Service d'Astrophysique, CEA-Saclay, F-91191 Gif-sur-Yvette Cedex (France)
  6. European Southern Observatory, Karl Schwarzschild-Strasse 2, D-85748 Garching bei München (Germany)
Publication Date:
OSTI Identifier:
22364495
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 795; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPARATIVE EVALUATIONS; COSMIC X-RAY SOURCES; GAMMA ASTRONOMY; HARD X RADIATION; JETS; LUMINOSITY; NEBULAE; NEUTRONS; PULSARS; PULSATIONS; SHOCK WAVES; SPIN; STARS; SUPERNOVA REMNANTS