Is Igr J11014-6103 a Pulsar With the Highest Known Kick Velocity?

Abstract

We report on Chandra X-ray and Parkes radio observations of IGR J11014-6103, which is a possible pulsar wind nebula with a complex X-ray morphology and a likely radio counterpart. With the superb angular resolution of Chandra, we find evidence that a portion of the extended emission may be related to a bow shock due to the putative pulsar moving through the interstellar medium. The inferred direction of motion is consistent with IGR J11014-6103 having been born in the event that produced the supernova remnant (SNR) MSH 11-61A. If this association is correct, then previous constraints on the expansion of MSH 11-61A imply a transverse velocity for IGR J11014-6103 of 2400-2900 km s −1 , depending on the SNR model used. This would surpass the kick velocities of any known pulsars and rival or surpass the velocities of any compact objects that are associated with SNRs. While it is important to confirm the nature of the source, our radio pulsation search did not yield a detection.

Radio observations of the region around the pulsar wind nebula HESS J1303−631 with ATCA

“…However, there are indications that some pulsars might be much faster, with velocities comparable to the estimate presented here for PSR J1301−6305. The estimate of the kick velocity of the possible pulsar IGR J11014 − 6103 is 2400 − 2900 km/s (Tomsick et al 2012), but the source nature cannot be unambiguously proven yet as no pulsations were detected so far. Also, the real age of PSR J1301−6305 might be higher than the characteristic age if the braking index is lower than 3, which is the case for 8 out of 9 pulsars for which the braking index has been measured reliably (Lyne et al 2015;Archibald et al 2016).…”

Another Short-Burst Host Galaxy With an Optically Obscured High Star Formation Rate: The Case of GRB 071227

“…For t 8 ∼ 1, the typical range in ages for starbursts traced by radio continuum observations, the required kick velocity is relatively modest when compared with the kick velocities of some Galactic neutron stars (e.g., Tomsick et al 2012), and might even be small compared to NS-NS/NS-BH systems. On the other hand, whether 150 km/s is a relatively high or even an unreasonable high value for a short-burst progenitor is difficult to evaluate, at least form the observational point of view.…”

Pulsar-Wind Nebulae

“…These are the "Lighthouse nebula" with PSR J1101-6101 (Halpern et al 2014;Pavan et al 2011;Tomsick et al 2012), the "Guitar nebula" with PSR B2224+65 (Johnson and Wang 2010;Hui and Becker 2007), and the "Turtle nebula" with PSR J0357+3205 ). The first two display bizarre extended features orthogonal to the pulsar's proper motion directions.…”