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Date and Time of the Query: 2019-06-18 T04:37:10 PDT
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For refcode 2003A&A...400..153A:
Retrieve 3 NED objects in this reference.
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NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2003A&A...400..153A Search for TeV gamma ray emission from the Andromeda galaxy F. A. Aharonian, A. G. Akhperjanian, M. Beilicke, K. Bernlohr, H. Bojahr, O. Bolz, H. Borst, T. Coarasa, J. L. Contreras, J. Cortina, S. Denninghoff, V. Fonseca, M. Girma, N. Gotting, G. Heinzelmann, G. Hermann, A. Heusler, W. Hofmann, D. Horns, I. Jung, R. Kankanyan, M. Kestel, J. Kettler, A. Kohnle, A. Konopelko, H. Kornmeyer, D. Kranich, H. Krawczynski ^\^% - H. Lampeitl, M. Lopez, E. Lorenz, F. Lucarelli, O. Mang, H. Meyer, R. Mirzoyan, A. Moralejo, E. Ona, M. Panter, A. Plyasheshnikov ^\S^ - G. Puhlhofer, G. Rauterberg, R. Reyes, W. Rhode, J. Ripken, A. Rohring, G. P. Rowell, V. Sahakian, M. Samorski, M. Schilling, M. Siems, D. Sobzynska^2,*^ - W. Stamm, M. Tluczykont, H. J. Volk, C. A. Wiedner, W. Wittek 1 - Max Planck Institut fur Kernphysik, Postfach 103980, 69029 Heidelberg, Germany 2 - Max Planck Institut fur Physik, Fohringer Ring 6, 80805 Munchen, Germany 3 - Universidad Complutense, Facultad de Ciencias Fisicas, Ciudad Universitaria, 28040 Madrid, Spain 4 - Universitat Hamburg, Institut fur Experimentalphysik, Luruper Chaussee 149, 22761 Hamburg, Germany 5 - Universitat Kiel, Institut fur Experimentelle und Angewandte Physik, Leibnizstrasse 15-19, 24118 Kiel, Germany 6 - Universitat Wuppertal, Fachbereich Physik, Gaussstr. 20, 42097 Wuppertal, Germany 7 - Yerevan Physics Institute, Alikhanian Br. 2, 375036 Yerevan, Armenia ^\S^ On leave from Altai State University, Dimitrov Street 66, 656099 Barnaul, Russia ^\^% Now at Yale University, PO Box 208101, New Haven, CT 06520-8101, USA ^*^ Home institute: University Lodz, Poland Received 6 November 2002 / Accepted 23 December 2002 Abstract. Using the HEGRA system of imaging atmospheric Cherenkov telescopes, the Andromeda galaxy (M 31) was surveyed for TeV gamma ray emission. Given the large field of view of the HEGRA telescopes, three pointings were sufficient to cover all of M 31, including also M 32 and NGC 205. No indications for point sources of TeV gamma rays were found. Upper limits are given at a level of a few percent of the Crab flux. A specific search for monoenergetic gamma-ray lines from annihilation of supersymmetric dark matter particles accumulating near the center of M 31 resulted in flux limits in the 10^-13^ cm^-2^ s^-1^range, well above the predicted MSSM flux levels except for models with pronounced dark-matter spikes or strongly enhanced annihilation rates. Key words: gamma rays: observations - galaxies: individual: M 31 - dark matter
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