Gamma radiation from PSR B1055-52

被引:123
作者
Thompson, DJ
Bailes, M
Bertsch, DL
Cordes, J
D'Amico, N
Esposito, JA
Finley, J
Hartman, RC
Hermsen, W
Kanbach, G
Kaspi, VM
Kniffen, DA
Kuiper, L
Lin, YC
Lyne, A
Manchester, R
Matz, SM
Mayer-Hasselwander, HA
Michelson, PF
Nolan, PL
Ögelman, H
Pohl, M
Ramanamurthy, PV
Sreekumar, P
Reimer, O
Taylor, JH
Ulmer, M
机构
[1] NASA, Goddard Space Flight Ctr, High Energy Astrophys Lab, Greenbelt, MD 20771 USA
[2] Swinburne Univ Technol, Hawthorn, Vic 3122, Australia
[3] Cornell Univ, Dept Phys, Ithaca, NY 14853 USA
[4] Osservatorio Astron Bologna, I-40126 Bologna, Italy
[5] Purdue Univ, Dept Phys, Lafayette, IN USA
[6] SRON, NL-3584 CA Utrecht, Netherlands
[7] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany
[8] MIT, Dept Phys, Cambridge, MA 02139 USA
[9] Hampden Sydney Coll, Dept Phys, Hampden Sydney, VA 23943 USA
[10] Stanford Univ, WW Hansen Labs Phys, Stanford, CA 94305 USA
[11] Stanford Univ, Dept Phys, Stanford, CA 94305 USA
[12] Univ Manchester, Nuffield Radio Astron Labs, Jodrell Bank, Macclesfield SK11 9DL, Cheshire, England
[13] CSIRO, ATNF, Epping, NSW, Australia
[14] Northwestern Univ, Dept Phys, Evanston, IL 60208 USA
[15] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[16] Danish Space Res Inst, Copenhagen 2100 O, Denmark
[17] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA
关键词
gamma rays : observations; pulsars : individual (PSR B1055-52);
D O I
10.1086/307083
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The telescopes on the Compton Gamma Ray Observatory (CGRO) have observed PSR B1055-52 a number of times between 1991 and 1998. From these data a more detailed picture of the gamma radiation from this source has been developed, showing several characteristics that distinguish this pulsar: the light curve is complex; there is no detectable unpulsed emission; the energy spectrum is hat, with no evidence of a sharp high-energy cutoff up to greater than 4 GeV. Comparisons of the gamma-ray data with observations at longer wavelengths show that no two of the known gamma-ray pulsars have quite the same characteristics; this diversity males interpretation in terms of theoretical models difficult.
引用
收藏
页码:297 / 306
页数:10
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