IGR J11014-6103: a newly discovered pulsar wind nebula?

TL;DR

This paper presents a multiwavelength analysis of IGR J11014-6103, revealing it as a pulsar wind nebula likely produced by a high-velocity pulsar, and possibly the first such system detected with INTEGRAL IBIS/ISGRI.

Contribution

It provides the first detailed multiwavelength characterization of IGR J11014-6103, identifying its components and proposing it as a pulsar wind nebula associated with a high-velocity pulsar.

Findings

Identified three X-ray emitting regions: a point source, an extended object, and a cometary tail.

Detected a radio counterpart coincident with the source.

Suggested the source is a pulsar wind nebula from a high-velocity pulsar.

Abstract

Context: IGRJ11014-6103 is one of the still unidentified hard X-ray INTEGRAL sources, reported for the first time in the 4th IBIS/ISGRI catalog. Aims: We investigated the nature of IGR J11014-6103 by carrying out a multiwavelength analysis of the available archival observations performed in the direction of the source. Methods: We present first the results of the timing and spectral analysis of all the X-ray observations of IGR J11014-6103 carried out with ROSAT, ASCA, Einstein, Swift, and XMM-Newton, and then use them to search for possible counterparts to the source in the optical, infra-red, radio and gamma-ray domain. Results: Our analysis revealed that IGR J11014-6103 is comprised of three different X-ray emitting regions: a point-like source, an extended object and a cometary-like "tail" (~4 arcmin). A possible radio counterpart positionally coincident with the source was also identified. Conclusions: Based on these results, we suggest that the emission from IGR J11014-6103 is generated by a pulsar wind nebula produced by a high-velocity pulsar. IGR J11014-6103 might be the first of these systems detected with INTEGRAL IBIS/ISGRI.