Discovery of X-Ray Pulsations from the INTEGRAL Source IGR J11014-6103
Abstract
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-1. Two XMM-Newton observations were obtained with the EPIC pn in small window mode, resulting in the measurement of its spin-down luminosity \dot{E}=1.36× 1036 erg s-1, characteristic age τ c = 116 kyr, and surface magnetic field strength Bs = 7.4 × 1011 G. In comparison to τ 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 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 \dot{E}. However, its structure differs in detail from the classic bow shock, and we explore possible reasons for this.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- November 2014
- DOI:
- arXiv:
- arXiv:1410.2332
- Bibcode:
- 2014ApJ...795L..27H
- Keywords:
-
- ISM: individual objects: MSH 11–61A G290.1–0.8;
- pulsars: individual: PSR J1101–6101 PSR J1105–6107;
- stars: neutron;
- X-rays: individual: IGR J11014–6103;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 6 pages, 4 figures, accepted for publication in ApJ Letters
