ARAN - Access to Research at NUI Galway

Discovery of a faint X-ray counterpart and of a parsec-long X-ray tail for the middle-aged, gamma-ray only pulsar PSR J0357+3205

ARAN - Access to Research at NUI Galway

Show simple item record

dc.contributor.author Shearer, Andrew en
dc.date.accessioned 2011-03-10T16:57:45Z en
dc.date.available 2011-03-10T16:57:45Z en
dc.date.issued 2011 en
dc.identifier.citation A. De Luca, M. Marelli, R.P. Mignani, P.A. Caraveo, W. Hummel, S. Collins, A. ...(2011)Discovery of a faint X-ray counterpart and of a parsec-long X-ray tail for the middle-aged, gamma-ray only pulsar PSR J0357+3205, en
dc.identifier.uri http://hdl.handle.net/10379/1732 en
dc.description.abstract The Large Area Telescope (LAT) onboard the Fermi satellite opened a new era for pulsar astronomy, detecting gamma-ray pulsations from more than 60 pulsars, ~40% of which are not seen at radio wavelengths. One of the most interesting sources discovered by LAT is PSR J0357+3205, a radio-quiet, middle-aged (tau_C ~0.5 Myr) pulsar standing out for its very low spin-down luminosity (Erot ~6x10^33 erg/s), indeed the lowest among non-recycled gamma-ray pulsars. A deep X-ray observation with Chandra (0.5-10 keV), coupled with sensitive optical/infrared ground-based images of the field, allowed us to identify PSR J0357+3205 as a faint source with a soft spectrum, consistent with a purely non-thermal emission (photon index Gamma=2.53+/-0.25). The absorbing column (NH=8+/-4x10^20 cm^-2) is consistent with a distance of a few hundred parsecs. Moreover, the Chandra data unveiled a huge (9 arcmin long) extended feature apparently protruding from the pulsar. Its non-thermal X-ray spectrum points to synchrotron emission from energetic particles from the pulsar wind, possibly similar to other elongated X-ray tails associated with rotation-powered pulsars and explained as bow-shock pulsar wind nebulae (PWNe). However, energetic arguments, as well as the peculiar morphology of the diffuse feature associated with PSR J0357+3205 make the bow-shock PWN interpretation rather challenging. en
dc.format application/pdf en
dc.language.iso en en
dc.subject Astrophysics - High Energy Astrophysical Phenomena en
dc.title Discovery of a faint X-ray counterpart and of a parsec-long X-ray tail for the middle-aged, gamma-ray only pulsar PSR J0357+3205 en
dc.type Article en
dc.local.publishedsource http://arxiv.org/pdf/1102.3278 en
dc.description.peer-reviewed peer-reviewed en
dc.local.authors A. De Luca, M. Marelli, R.P. Mignani, P.A. Caraveo, W. Hummel, S. Collins, A. Shearer, P.M. Saz Parkinson, A. Belfiore, G.F. Bignami en
dc.local.arxivid 1102.3278 en

Files in this item

Full Text

This item appears in the following Collection(s)

Show simple item record

Search ARAN


Advanced Search

Browse

My Account

Statistics