Detection of High-Energy Gamma-Ray Emission from the Globular Cluster 47 Tucanae with Fermi

被引：89

作者：

Abdo, A. A. ^{[2
]}

Ackermann, M. ^{[3
,49
]}

Ajello, M. ^{[3
,49
]}

Atwood, W. B. ^{[4
,35
]}

Axelsson, M. ^{[5
,6
]}

Baldini, L. ^{[7
]}

Ballet, J. ^{[8
]}

Barbiellini, G. ^{[9
,10
]}

Bastieri, D. ^{[11
,12
]}

Baughman, B. M. ^{[13
]}

Bechtol, K. ^{[3
,49
]}

Bellazzini, R. ^{[7
]}

Berenji, B. ^{[3
,49
]}

Blandford, R. D. ^{[3
,49
]}

Bloom, E. D. ^{[3
,49
]}

Bonamente, E. ^{[14
,15
]}

Borgland, A. W. ^{[3
,49
]}

Bregeon, J. ^{[7
]}

Brez, A. ^{[7
]}

Brigida, M. ^{[16
,17
,50
]}

Bruel, P. ^{[18
]}

Burnett, T. H. ^{[19
]}

Caliandro, G. A. ^{[16
,17
,50
]}

Cameron, R. A. ^{[3
,49
]}

Caraveo, P. A. ^{[20
]}

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

Cecchi, C. ^{[14
,15
]}

Celik, Oe ^{[21
]}

Charles, E. ^{[3
,49
]}

Chaty, S. ^{[8
]}

Chekhtman, A. ^{[2
,22
]}

Cheung, C. C. ^{[21
]}

Chiang, J. ^{[3
,49
]}

Ciprini, S. ^{[14
,15
]}

Claus, R. ^{[3
,49
]}

Cohen-Tanugi, J. ^{[23
]}

Conrad, J. ^{[5
,24
,25
]}

Cutini, S. ^{[26
]}

Dermer, C. D. ^{[2
]}

de Palma, F. ^{[16
,17
,50
]}

Digel, S. W. ^{[3
,49
]}

Dormody, M. ^{[35
]}

do Couto e Silva, E. ^{[3
,49
]}

Drell, P. S. ^{[3
,49
]}

Dubois, R. ^{[3
,49
]}

Dumora, D. ^{[27
,28
]}

Farnier, C. ^{[17
,23
]}

Favuzzi, C. ^{[16
,17
,50
]}

Fegan, S. J. ^{[18
]}

Focke, W. B. ^{[3
,49
]}

机构：

[1] UPS, CNRS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France

[2] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA

[3] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA

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

[5] Oskar Klein Ctr Cosmo Particle Phys, SE-10691 Stockholm, Sweden

[6] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden

[7] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy

[8] Univ Paris Diderot, Lab AIM, CEA Saclay, CEA IRFU CNRS,Serv Astrophys, F-91191 Gif Sur Yvette, France

[9] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy

[10] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy

[11] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[12] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy

[13] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA

[14] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy

[15] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy

[16] Univ Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy

[17] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[18] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[19] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[20] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy

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

[22] George Mason Univ, Fairfax, VA 22030 USA

[23] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, Montpellier, France

[24] Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden

[25] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden

[26] ASI, Sci Data Ctr, I-00044 Frascati, Roma, Italy

[27] Ctr Etud Nucl Bordeaux Gradignan, CNRS, IN2P3, UMR 5797, F-33175 Gradignan, France

[28] Univ Bordeaux, UMR 5797, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France

[29] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy

[30] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan

[31] Univ Maryland, College Pk, MD 20742 USA

[32] Univ Alabama, Huntsville, AL 35899 USA

[33] RIKEN, Inst Phys & Chem Res, Cosm Radiat Lab, Wako, Saitama 3510198, Japan

[34] Tokyo Inst Technol, Dept Phys, Meguro, Tokyo 1528551, Japan

[35] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

[36] NASA, Goddard Space Flight Ctr, Ctr Res & Explorat Space Sci & Technol, Greenbelt, MD 20771 USA

[37] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy

[38] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA

[39] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[40] Sterrenkundig Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands

[41] Inst Ciencies Espai IEEC CSIC, Barcelona 08193, Spain

[42] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchen Phys, A-6020 Innsbruck, Austria

[43] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA

[44] Inst Catalana Recerca & Estudis Avancats, Barcelona, Spain

[45] Consorzio Interuniv Fis Spaziale, I-10133 Turin, Italy

[46] Univ Maryland, Baltimore, MD 21250 USA

[47] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[48] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden

[49] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA

[50] Politecn Bari, I-70126 Bari, Italy

来源：

SCIENCE | 2009年 / 325卷 / 5942期

基金：

瑞典研究理事会;

关键词：

MILLISECOND PULSARS; X-RAY; BINARIES; POPULATION; CORE;

D O I：

10.1126/science.1177023

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We report the detection of gamma-ray emissions above 200 megaelectron volts at a significance level of 17 sigma from the globular cluster 47 Tucanae, using data obtained with the Large Area Telescope onboard the Fermi Gamma-ray Space Telescope. Globular clusters are expected to emit gamma rays because of the large populations of millisecond pulsars that they contain. The spectral shape of 47 Tucanae is consistent with gamma-ray emission from a population of millisecond pulsars. The observed gamma-ray luminosity implies an upper limit of 60 millisecond pulsars present in 47 Tucanae.

引用

页码：845 / 848

页数：4

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