Tev Gamma-ray observations of the galactic center

被引：169

作者：

Kosack, K

Badran, HM

Bond, IH

Boyle, PJ

Bradbury, SM

Buckley, JH

Carter-Lewis, DA

Celik, O

Connaughton, V

Cui, W

Daniel, M

D'Vall, M

Perez, IDL

Duke, C

Falcone, A

Fegan, DJ

Fegan, SJ

Finley, JP

Fortson, LF

Gaidos, JA

Gammell, S

Gibbs, K

Gillanders, GH

Grube, J

Gutierrez, K

Hall, J

Hall, TA

Hanna, D

Hillas, AM

Holder, J

Horan, D

Jarvis, A

Jordan, M

Kenny, GE

Kertzman, M

Kieda, D

Kildea, J

Knapp, J

Krawczynski, H

Krennrich, F

Lang, MJ

Le Bohec, S

Linton, E

Lloyd-Evans, J

Milovanovic, A

McEnery, J

Moriarty, R

Muller, D

Nagai, T

Nolan, S

机构：

[1] Washington Univ, Dept Phys, St Louis, MO 63130 USA

[2] Tanta Univ, Dept Phys, Tanta, Egypt

[3] Univ Leeds, Dept Phys, Leeds LS2 9JT, W Yorkshire, England

[4] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[5] Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA

[6] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA

[7] Gamma Ray Astrophys Grp Natl Space Sci, Huntsville, AL USA

[8] Ctr Technol, Huntsville, AL USA

[9] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA

[10] Grinnell Coll, Dept Phys, Grinnell, IA 50112 USA

[11] Natl Univ Ireland Univ Coll Dublin, Dept Expt Phys, Dublin 4, Ireland

[12] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA

[13] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA

[14] Adler Planetarium, Dept Astron, Chicago, IL 60605 USA

[15] Astron Museum, Chicago, IL 60605 USA

[16] Natl Univ Ireland Univ Coll Galway, Dept Phys, Galway, Ireland

[17] Univ Utah, High Energy Astrophys Inst, Salt Lake City, UT 84112 USA

[18] Univ Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA

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

[20] Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA

[21] Univ Maryland Baltimore Cty, Greenbelt, MD 20771 USA

[22] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[23] Mayo Inst Technol, Sch Sci, Galway, Ireland

[24] Cork Inst Technol, Dept Appl Phys & Instrumentat, Cork, Ireland

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 608卷 / 02期

基金：

加拿大自然科学与工程研究理事会; 美国国家科学基金会;

关键词：

dark matter; Galaxy : center; Galaxy : nucleus; gamma rays : observations;

D O I：

10.1086/422469

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report a possible detection of TeV gamma rays from the Galactic center by the Whipple 10 m gamma-ray telescope. Twenty-six hours of data were taken over an extended period from 1995 through 2003 resulting in a total significance of 3.7 sigma. The measured excess corresponds to an integral flux of 1.6 x 10(-8) +/- 0.5 x 10(-8) (stat) +/- 0.3 x 10(-8) (sys) photons m(-2) s(-1) above an energy of 2.8 TeV, roughly 40% of the flux from the Crab Nebula at this energy. The 95% confidence region has an angular extent of about 15' and includes the position of Sgr A*. The detection is consistent with a point source and shows no evidence of variability.

引用

页码：L97 / L100

页数：4

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