SIMBAD references

2008ApJ...682L..41H - Astrophys. J., 682, L41-L44 (2008/July-3)

PSR J1856+0245: Arecibo discovery of a young, energetic pulsar coincident with the TeV γ-ray source HESS J1857+026.

HESSELS J.W.T., NICE D.J., GAENSLER B.M., KASPI V.M., LORIMER D.R., CHAMPION D.J., LYNE A.G., KRAMER M., CORDES J.M., FREIRE P.C.C., CAMILO F., RANSOM S.M., DENEVA J.S., BHAT N.D.R., COGNARD I., CRAWFORD F., JENET F.A., KASIAN L., LAZARUS P., VAN LEEUWEN J., McLAUGHLIN M.A., STAIRS I.H., STAPPERS B.W. and VENKATARAMAN A.

Abstract (from CDS):

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 81 ms, a characteristic age of 21 kyr, and a spin-down luminosity E{dot}=4.6x10³⁶ ergs/s. It is positionally coincident with the TeV γ-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 (100 GeV-100 TeV) γ-ray sources discovered with the HESS telescope. The γ-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 γ-ray efficiency is ε_γ=L_γ/E{dot}=3.1 % (1-10 TeV, for a distance of 9 kpc), comparable to that observed in similar associations.

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Journal keyword(s): Gamma Rays: Observations - Stars: Pulsars: General - pulsars: individual (PSR J1856+0245) - Stars: Neutron - X-rays: individual (AX J185651+0245)

Simbad objects: 40

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