Discovery of X-ray Pulsations from the INTEGRAL Source IGR J11014-6103
Abstract
IGR J11014-6103 is an X-ray source with a cometary tail that strongly suggests it is a pulsar moving away from the center of the SNR MSH 11-61A at high velocity, at greater than 1000 km s-1. It also has a very long X-ray jet that is misaligned from the tail. The jet direction could indicate the rotation axis of the pulsar. We performed an observation of IGR J11014-6103 with the XMM-Newton EPIC pn in small window mode that resulted in the discovery of 62.8 ms pulsations from the point-like component in this system. The X-rays from PSR J1101-6101 have a pulsed fraction of 0.5, and a pulse shape that is largely independent of energy from 0.5-10 keV, similar to the non-thermal pulsations from most other rotation-powered pulsars detected by INTEGRAL. A second observation with XMM-Newton is planned to measure the spin-down rate of PSR J1101-6101. This will determine its age, and establish whether it is consistent with originating in SNR MSH 11-61A.
- Publication:
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AAS/High Energy Astrophysics Division #14
- Pub Date:
- August 2014
- Bibcode:
- 2014HEAD...1411407H