Show simple item record

dc.contributor.authorShearer, Andrewen
dc.date.accessioned2011-03-10T16:57:45Zen
dc.date.available2011-03-10T16:57:45Zen
dc.date.issued2011en
dc.identifier.citationA. 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.urihttp://hdl.handle.net/10379/1732en
dc.description.abstractThe 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.formatapplication/pdfen
dc.language.isoenen
dc.subjectAstrophysics - High Energy Astrophysical Phenomenaen
dc.titleDiscovery of a faint X-ray counterpart and of a parsec-long X-ray tail for the middle-aged, gamma-ray only pulsar PSR J0357+3205en
dc.typeArticleen
dc.local.publishedsourcehttp://arxiv.org/pdf/1102.3278en
dc.description.peer-reviewedpeer-revieweden
dc.local.authorsA. De Luca, M. Marelli, R.P. Mignani, P.A. Caraveo, W. Hummel, S. Collins, A. Shearer, P.M. Saz Parkinson, A. Belfiore, G.F. Bignamien
dc.local.arxivid1102.3278en
nui.item.downloads0


Files in this item

This item appears in the following Collection(s)

Show simple item record