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.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
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 |
nui.item.downloads | 0 | |