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

@article{Abeysekara2018PeriastronOO, title={Periastron Observations of TeV Gamma-Ray Emission from a Binary System with a 50-year Period}, author={T. V. C. A. U. Abeysekara and W. Benbow and R. Bird and A. Brill and R. Brose and J. Buckley and A. Chromey and M. Daniel and A. Falcone and J. Finley and L. Fortson and A. Furniss and A. Gent and G. H. Gillanders and D. Hanna and T. Hassan and O. Hervet and J. Holder and G. Hughes and T. Humensky and P. Kaaret and P. Kar and M. Kertzman and D. Kieda and M. Krause and F. Krennrich and S. Kumar and M. Lang and T. T. Lin and G. Maier and P. Moriarty and R. Mukherjee and S. O'brien and R. Ong and A. N. Otte and N. Park and A. Petrashyk and M. Pohl and E. Pueschel and J. Quinn and K. Ragan and G. T. Richards and E. Roache and I. Sadeh and M. Santander and S. Schlenstedt and G. Sembroski and I. Sushch and J. Tyler and V. Vassiliev and S. Wakely and A. Weinstein and R. M. Wells and P. Wilcox and A. Wilhelm and D. Williams and T. Williamson and B. Zitzer and Department of Engineering Physics and Astronomy and U. Utah and Usa Fred Lawrence Whipple Observatory and Harvard-Smithsonian Center for Astrophysics and Usa Department of Physics and University of California at Los Angeles and Usa Physics Department and C. University and Usa Institute of Physics and U. Potsdam and G. Desy and G. D. O. Physics and Washington University and I. S. University and U. D. O. Astronomy and Astrophysics and P. University and U. S. O. Physics and U. Minnesota and California Bay and Center for Relativistic Astrophysics and Georgia Institute of Technology and GA 30332-0430 School of Physics and National University of Ireland Galway and Ireland Physics Department and M. University and Canada Santa Cruz Institute for Particle Physics and U. O. C. S. Cruz and the Bartol Research Institute and U. Delaware and U. O. Iowa and D. University and B. College and University College Dublin and Ireland Wipac and U. O. Wisconsin--Madison and U. Alabama and Usa Enrico Fermi Institute and U. Chicago and U. M. C. V. A. Acciari and S. Ansoldi and L. Antonelli and A. Engels and D. Baack and A. Babi{\'c} and B. Banerjee and U. Almeida and J. Barrio and J. Gonzalez and W. Bednarek and E. Bernardini and A. Berti and J. Besenrieder and W. Bhattacharyya and C. Bigongiari and A. Biland and O. Blanch and G. Bonnoli and G. Busetto and R. Carosi and G. Ceribella and S. Cikota and S. M. Colak and P. Colin and E. Colombo and J. Contreras and J. Cortina and S. Covino and V. D’Elia and P. D. Vela and F. Dazzi and A. Angelis and B. D. Lotto and M. Delfino and J. Delgado and F. Pierro and E. D. S. Espi{\~n}era and A. Dominguez and D. D. Prester and D. Dorner and M. Doro and S. Einecke and D. Elsaesser and V. F. Ramazani and A. Fattorini and A. Fern{\'a}ndez-Barral and G. Ferrara and D. Fidalgo and L. Foffano and M. Fonseca and L. Font and C. Fruck and D. Galindo and S. Gallozzi and R. L'opez and M. Garczarczyk and S. Gasparyan and M. Gaug and P. Giammaria and N. Godinovic and D. Guberman and D. Hadasch and A. Hahn and J. Herrera and J. Hoang and D. Hrupec and S. Inoue and K. Ishio and Y. Iwamura and H. Kubo and J. Kushida and D. Kuvevzdi'c and A. Lamastra and D. Lelas and F. Leone and E. Lindfors and S. Lombardi and F. Longo and M. L{\'o}pez and A. L'opez-Oramas and B. Fraga and C. Maggio and P. Majumdar and M. Makariev and M. Mallamaci and G. Maneva and M. Manganaro and K. Mannheim and L. Maraschi and M. Mariotti and M. Martinez and S. Masuda and D. Mazin and M. Minev and J. Miranda and R. Mirzoyan and E. Molina and A. Moralejo and V. Moreno and E. Moretti and P. Munar-Adrover and V. Neustroev and A. Niedzwiecki and M. N. Rosillo and C. Nigro and K. Nilsson and D. Ninci and K. Nishijima and K. Noda and L. Nogu{\'e}s and M. Nothe and S. Paiano and J. Palacio and D. Paneque and R. Paoletti and J. M. Paredes and G. Pedaletti and P. Pe{\~n}il and M. Peresano and M. Persic and P. G. P. Moroni and E. Prandini and I. Puljak and J. R. Garcia and W. Rhode and M. Rib'o and J. Rico and C. Righi and A. Rugliancich and L. Saha and N. Sahakyan and T. Saito and K. Satalecka and T. Schweizer and J. Sitarek and I. vSnidari'c and D. Sobczy'nska and A. Somero and A. Stamerra and M. Strzys and T. Suric and F. Tavecchio and P. Temnikov and T. Terzi'c and M. Teshima and N. Torres-Alba and S. Tsujimoto and J. V. Scherpenberg and G. Vanzo and M. Acosta and I. Vovk and M. Will and D. Zari'c and I. D. A. D. Canarias and L. Laguna and Spain and Universita' di Udine and Infn and Sezione di Trieste and Italy. and Udine and I. N. I. F. Astrophysics and Roma and E. Zurich and Institute for Particle Physics and Z{\'u}rich and Switzerland. and Technische Universitat Dortmund and Dortmund and Germany. and Croatian Magic Consortium Rudjer Boskovic Institute and University of Rijeka and U. O. S. -. Fesb and University of Zagreb-FER and University of Osijek and Split and Croatia. and S. I. O. N. Physics and Hbni and Kolkata and India. and Centro Brasileiro de Pesquisas F'isicas and R. D. Janeiro and Brasil. and Unidad de Part'iculas y Cosmolog'ia and Universidad Complutense and E. Madrid and Madrid and Division of Astrophysics and U. L'od'z and Lodz and Poland and Deutsches Elektronen-Synchrotron Zeuthen and Zeuthen and Istituto Nazionale Fisica Nucleare and 00044 Frascati Italy Max-Planck-Institut fur Physik and Munchen and Institut de F'isica d'Altes Energies and T. Science and Technology and E-08193 Bellaterra and Bellaterra and Dipartimento Sfta and S. D. Fisica and U. Siena and I. Pisa and Siena and Dipartimento di Fisica e Astronomia della Universita and Sezione I.N.F.N. and Padova and Universita' di Pisa and Pisa and Institut fur Theoretische Physik und Astrophysik - Fakultat Wurzburg and Wurzburg and Finnish Magic Consortium Tuorla Observatory and Finnish Magic Consortium Finnish Centre of Astronomy with Eso and University of Turku and FIN-20014 University of Turku and A. Division and U. O. Oulu and FIN-90014 University of Oulu and Finland and Turku and Universitat Aut'onoma de Barcelona and Barcelona and RA TheArmenianConsortiumICRANet-ArmeniaatNAS and A. N. Laboratory and Yerevan and Armenia and Japanese Magic Consortium Icrr and T. U. O. Tokyo and 277-8582 Chiba and Japan. and K. University and 606-8502 Kyoto and T. University and 259-1292 Kanagawa and Riken and 351-0198 Saitama and Kyoto and I. F. N. Research and N. Energy and Sof{\'i}a and Bulgaria and Humboldt University of Berlin and Institut fur Physik D-12489 Berlin Germany and also at Dipartimento di Fisica and Universita di UdineI.N.F.N. Trieste and I-34127 Trieste and also at Port d'Informaci'o Cient'ifica E-08193 Bellater Spain and also at INAF-Trieste and D. Astronomy and U. O. Bologna}, journal={The Astrophysical Journal}, year={2018}, volume={867}, pages={19} }

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… CONTINUE READING

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