Periastron Observations of TeV Gamma-Ray Emission from a Binary System with a 50-year Period

被引:49
作者
Abeysekara, A. U. [1 ]
Benbow, W. [2 ]
Bird, R. [3 ]
Brill, A. [4 ]
Brose, R. [5 ,6 ]
Buckley, J. H. [7 ]
Chromey, A. J. [8 ]
Daniel, M. K. [2 ]
Falcone, A. [9 ]
Finley, J. P. [10 ]
Fortson, L. [11 ]
Furniss, A. [12 ]
Gent, A. [13 ,14 ]
Gillanders, G. H. [15 ]
Hanna, D. [16 ]
Hassan, T. [6 ]
Hervet, O. [17 ,18 ]
Holder, J. [19 ,20 ]
Hughes, G. [2 ]
Humensky, T. B. [4 ]
Kaaret, P. [21 ]
Kar, P. [1 ]
Kertzman, M. [22 ]
Kieda, D. [1 ]
Krause, M. [6 ]
Krennrich, F. [8 ]
Kumar, S. [16 ,19 ,20 ]
Lang, M. J. [15 ]
Lin, T. T. Y. [16 ]
Maier, G. [6 ]
Moriarty, P. [15 ]
Mukherjee, R. [23 ]
O'Brien, S. [24 ]
Ong, R. A. [3 ]
Otte, A. N. [13 ,14 ]
Park, N. [25 ,26 ]
Petrashyk, A. [4 ]
Pohl, M. [5 ,6 ]
Pueschel, E. [6 ]
Quinn, J. [24 ]
Ragan, K. [16 ]
Richards, G. T. [13 ,14 ,19 ,20 ]
Roache, E. [2 ]
Sadeh, I. [6 ]
Santander, M. [27 ]
Schlenstedt, S. [6 ]
Sembroski, G. H. [10 ]
Sushch, I. [6 ]
Tyler, J. [16 ]
Vassiliev, V. V. [3 ]
机构
[1] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA
[2] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA
[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[4] Columbia Univ, Dept Phys, New York, NY 10027 USA
[5] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany
[6] DESY, Platanenallee 6, D-15738 Zeuthen, Germany
[7] Washington Univ, Dept Phys, St Louis, MO 63130 USA
[8] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA
[9] Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA
[10] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA
[11] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA
[12] Calif State Univ East Bay, Dept Phys, Hayward, CA 94542 USA
[13] Georgia Inst Technol, Sch Phys, 837 State St NW, Atlanta, GA 30332 USA
[14] Georgia Inst Technol, Ctr Relativist Astrophys, 837 State St NW, Atlanta, GA 30332 USA
[15] Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway, Ireland
[16] McGill Univ, Phys Dept, Montreal, PQ H3A 2T8, Canada
[17] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
[18] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA
[19] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA
[20] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA
[21] Univ Iowa, Dept Phys & Astron, Van Allen Hall, Iowa City, IA 52242 USA
[22] Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA
[23] Columbia Univ, Dept Phys & Astron, Barnard Coll, New York, NY 10027 USA
[24] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland
[25] Univ Wisconsin, WIPAC, Madison, WI USA
[26] Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
[27] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA
[28] Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA
[29] Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Spain
[30] Univ La Laguna, Dpto Astrofis, E-38206 Tenerife, Spain
[31] Univ Udine, I-33100 Udine, Italy
[32] INFN Trieste, I-33100 Udine, Italy
[33] Univ Tokyo, Japanese MAGIC Consortium ICRR, Chiba 2778582, Japan
[34] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
[35] Tokai Univ, Hiratsuka, Kanagawa 2591292, Japan
[36] RIKEN, Saitama 3510198, Japan
[37] Natl Inst Astrophys INAF, I-00136 Rome, Italy
[38] Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland
[39] Tech Univ Dortmund, D-44221 Dortmund, Germany
[40] Univ Rijeka, Croatian MAGIC Consortium, Rijeka 51000, Croatia
[41] Univ Split FESB, Split 21000, Croatia
[42] Univ Zagreb FER, Zagreb 10000, Croatia
[43] Univ Osijek, Osijek 31000, Croatia
[44] Rudjer Boskovic Inst, Zagreb 10000, Croatia
[45] HBNI, Saha Inst Nucl Phys, 1-AF Bidhannagar,Sect 1, Kolkata 700064, India
[46] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ, Brazil
[47] Univ Complutense, Unidad Particulas & Cosmol UPARCOS, E-28040 Madrid, Spain
[48] Univ Lodz, Dept Astrophys, PL-90236 Lodz, Poland
[49] DESY, D-15738 Zeuthen, Germany
[50] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany
基金
美国国家科学基金会; 加拿大自然科学与工程研究理事会;
关键词
gamma rays: general; pulsars: individual (PSR J2032+4127; VER J2032+414; MAGIC J2032+4127); stars: individual (MT91 213); X-rays: binaries; PULSAR; WIND; STAR; TELESCOPES; CASCADES;
D O I
10.3847/2041-8213/aae70e
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report on observations of the pulsar/Be star binary system PSR J2032+4127/MT91 213 in the energy range between 100 GeV and 20 TeV with the Very Energetic Radiation Imaging Telescope Array and Major Atmospheric Gamma Imaging Cherenkov telescope arrays. The binary orbit has a period of approximately 50 years, with the most recent periastron occurring on 2017 November 13. Our observations span from 18 months prior to periastron to one month after. A new point-like gamma-ray source is detected, coincident with the location of PSR J2032+4127/MT91 213. The gamma-ray light curve and spectrum are well characterized over the periastron passage. The flux is variable over at least an order of magnitude, peaking at periastron, thus providing a firm association of the TeV source with the pulsar/Be star system. Observations prior to periastron show a cutoff in the spectrum at an energy around 0.5 TeV. This result adds a new member to the small population of known TeV binaries, and it identifies only the second source of this class in which the nature and properties of the compact object are firmly established. We compare the gamma-ray results with the light curve measured with the X-ray Telescope on board the Neil Gehrels Swift Observatory and with the predictions of recent theoretical models of the system. We conclude that significant revision of the models is required to explain the details of the emission that we have observed, and we discuss the relationship between the binary system and the overlapping steady extended source, TeV J2032+4130.
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页数:8
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