DISCOVERY OF TeV GAMMA-RAY EMISSION FROM TYCHO'S SUPERNOVA REMNANT

被引：156

作者：

Acciari, V. A. ^{[1
]}

Aliu, E. ^{[2
]}

Arlen, T. ^{[3
]}

Aune, T. ^{[4
,5
]}

Beilicke, M. ^{[6
]}

Benbow, W. ^{[1
]}

Bradbury, S. M. ^{[7
]}

Buckley, J. H. ^{[6
]}

Bugaev, V. ^{[6
]}

Byrum, K. ^{[8
]}

Cannon, A. ^{[9
]}

Cesarini, A. ^{[10
]}

Ciupik, L. ^{[11
]}

Collins-Hughes, E. ^{[9
]}

Cui, W. ^{[12
]}

Dickherber, R. ^{[6
]}

Duke, C. ^{[13
]}

Errando, M. ^{[2
]}

Finley, J. P. ^{[12
]}

Finnegan, G. ^{[14
]}

Fortson, L. ^{[11
]}

Furniss, A. ^{[4
,5
]}

Galante, N. ^{[1
]}

Gall, D. ^{[12
]}

Gillanders, G. H. ^{[10
]}

Godambe, S. ^{[14
]}

Griffin, S. ^{[15
]}

Grube, J. ^{[11
]}

Guenette, R. ^{[15
]}

Gyuk, G. ^{[11
]}

Hanna, D. ^{[15
]}

Holder, J. ^{[16
,17
]}

Hughes, J. P. ^{[18
]}

Hui, C. M. ^{[14
]}

Humensky, T. B. ^{[19
]}

Kaaret, P. ^{[20
]}

Karlsson, N. ^{[11
]}

Kertzman, M. ^{[21
]}

Kieda, D. ^{[14
]}

Krawczynski, H. ^{[6
]}

Krennrich, F. ^{[22
]}

Lang, M. J. ^{[10
]}

LeBohec, S. ^{[14
]}

Madhavan, A. S. ^{[22
]}

Maier, G. ^{[23
]}

Majumdar, P. ^{[3
]}

McArthur, S. ^{[6
]}

McCann, A. ^{[15
]}

Moriarty, P. ^{[24
]}

Mukherjee, R. ^{[2
]}

机构：

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

[2] Columbia Univ, Dept Phys & Astron, Barnard Coll, New York, NY 10027 USA

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[4] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA

[5] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA

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

[7] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

[8] Argonne Natl Lab, Argonne, IL 60439 USA

[9] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland

[10] Natl Univ Ireland Galway, Sch Phys, Galway, Ireland

[11] Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA

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

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

[14] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA

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

[16] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

[17] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA

[18] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

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

[20] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

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

[22] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[23] DESY, D-15738 Zeuthen, Germany

[24] Galway Mayo Inst Technol, Dept Life & Phys Sci, Galway, Ireland

[25] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany

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

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

[28] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2011年 / 730卷 / 02期

基金：

爱尔兰科学基金会; 美国国家科学基金会; 加拿大自然科学与工程研究理事会; 英国科学技术设施理事会;

关键词：

gamma rays: general; ISM: individual objects (G120.1+01.4; Tycho=VER J0025+641); GALACTIC PLANE SURVEY; SHOCK ACCELERATION; EXPANSION; ASTRONOMY; SPECTRUM; CATALOG; CHANDRA; HESS; CONSTRAINTS; TURBULENCE;

D O I：

10.1088/2041-8205/730/2/L20

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of TeV gamma-ray emission from the Type Ia supernova remnant (SNR) G120.1+1.4, known as Tycho's SNR. Observations performed in the period 2008-2010 with the VERITAS ground-based gamma-ray observatory reveal weak emission coming from the direction of the remnant, compatible with a point source located at 00(h)25(m)27(s).0, +64 degrees 10'50 '' (J2000). The TeV photon spectrum measured by VERITAS can be described with a power law dN/dE = C(E/3.42 TeV)(-Gamma) with Gamma = 1.95 +/- 0.51(stat) +/- 0.30(sys) and C = (1.55 +/- 0.43(stat) +/- 0.47(sys)) x 10(-14) cm(-2) s(-1) TeV-1. The integral flux above 1 TeV corresponds to similar to 0.9% of the steady Crab Nebula emission above the same energy, making it one of the weakest sources yet detected in TeV gamma rays. We present both leptonic and hadronic models that can describe the data. The lowest magnetic field allowed in these models is similar to 80 mu G, which may be interpreted as evidence for magnetic field amplification.

引用

页数：6

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