Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-06-06
Astronomy and Astrophysics
Astrophysics
13 pages, 1 figure, accepted for publication in The Astrophysical Journal Letters
Scientific paper
10.1086/590908
We present the discovery of the Vela-like radio pulsar J1856+0245 in the Arecibo PALFA survey. PSR J1856+0245 has a spin period of 81ms, a characteristic age of 21kyr, and a spin-down luminosity Edot = 4.6 x 10^36 ergs/s. It is positionally coincident with the TeV gamma-ray source HESS J1857+026, which has no other known counterparts. Young, energetic pulsars create wind nebulae, and more than a dozen pulsar wind nebulae have been associated with very-high-energy (100GeV-100TeV) gamma-ray sources discovered with the HESS telescope. The gamma-ray emission seen from HESS J1857+026 is potentially produced by a pulsar wind nebula powered by PSR J1856+0245; faint X-ray emission detected by ASCA at the pulsar's position supports this hypothesis. The inferred gamma-ray efficiency is epsilon_gamma = L_gamma/Edot = 3.1% (1-10TeV, for a distance of 9kpc), comparable to that observed in similar associations.
Bhat N. D. R.
Camilo Fernando
Champion David J.
Cognard Ismaël
Cordes James M.
No associations
LandOfFree
PSR J1856+0245: Arecibo Discovery of a Young, Energetic Pulsar Coincident with the TeV Gamma-ray Source HESS J1857+026 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with PSR J1856+0245: Arecibo Discovery of a Young, Energetic Pulsar Coincident with the TeV Gamma-ray Source HESS J1857+026, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PSR J1856+0245: Arecibo Discovery of a Young, Energetic Pulsar Coincident with the TeV Gamma-ray Source HESS J1857+026 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-173110