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

被引：30

作者：

Hessels, J. W. T. ^{[1
]}

Nice, D. J. ^{[2
]}

Gaensler, B. M. ^{[3
]}

Kaspi, V. M. ^{[4
]}

Lorimer, D. R. ^{[5
]}

Champion, D. J. ^{[6
]}

Lyne, A. G. ^{[7
]}

Kramer, M. ^{[7
]}

Cordes, J. M. ^{[8
]}

Freire, P. C. C. ^{[9
]}

Camilo, F. ^{[10
]}

Ransom, S. M. ^{[11
]}

Deneva, J. S. ^{[8
]}

Bhat, N. D. R. ^{[12
]}

Cognard, I. ^{[13
]}

Crawford, F. ^{[14
]}

Jenet, F. A. ^{[15
]}

Kasian, L. ^{[16
]}

Lazarus, P. ^{[4
]}

van Leeuwen, J. ^{[17
]}

McLaughlin, M. A. ^{[5
]}

Stairs, I. H. ^{[16
]}

Stappers, B. W. ^{[7
]}

Venkataraman, A. ^{[9
]}

机构：

[1] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands

[2] Bryn Mawr Coll, Dept Phys, Bryn Mawr, PA 19010 USA

[3] Univ Sydney, Sch Phys, Inst Astron, Sydney, NSW 2006, Australia

[4] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[5] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA

[6] ATNF CSIRO, Epping, NSW 1710, Australia

[7] Univ Manchester, Jordell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England

[8] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA

[9] Arecibo Observ, NAIC, Arecibo, PR 00612 USA

[10] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA

[11] Natl Radio Astron Observ, Charlottesville, VA 22903 USA

[12] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia

[13] CNRS, LPCE, F-45071 Orleans, France

[14] Franklin & Marshall Coll, Dept Phys & Astron, Lancaster, PA 17604 USA

[15] Univ Texas Brownsville, Ctr Gravitat Wave Astron, Brownsville, TX 78520 USA

[16] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[17] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2008年 / 682卷 / 01期

基金：

美国国家科学基金会;

关键词：

gamma rays : observations; pulsars : general; pulsars : individual (PSR J1856+0245); stars : neutron; X-rays : individual (AX J185651+0245);

D O I：

10.1086/590908

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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) over dot = 4.6 x 10(36) ergs s(-1). 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 ( 100 GeV-100 TeV) 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)/(E) over dot = 3.1 % (1-10 TeV, for a distance of 9 kpc), comparable to that observed in similar associations.

引用

页码：L41 / L44

页数：4

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