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68 results on '"Wiebel-Sooth, B."'

1. Search for gamma-ray bursts above 20 TeV with the HEGRA AIROBICC Cherenkov array

Author

HEGRA collaboration, Padilla, L., Funk, B., Krawczynski, H., Contreras, J. L., Moralejo, A., Aharonian, F., Akhperjanian, A. G., Barrio, J. A., Beteta, J. G., Cortina, J., Deckers, T., Fonseca, V., Gebauer, H. -J., Gonzalez, J. C., Heinzelmann, G., Horns, D., Kornmayer, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Petry, D., Plaga, R., Prahl, J., Prosch, C., Rauterberg, G., Rhode, W., Roehring, A., Sahakian, V., Samorski, M., Schmele, D., Stamm, W., Wiebel-Sooth, B., Willmer, M., and Wittek, W.

Subjects
Astrophysics
Abstract

A search for gamma-ray bursts (GRBs) above 20 TeV within the field of view (1 sr) of the HEGRA AIROBICC Cherenkov array (29N, 18W, 2200 m a.s.l.) has been performed using data taken between March 1992 and March 1993. The search is based on an all-sky survey using four time scales, 10 seconds, 1 minute, 4 minutes and 1 hour. No evidence for TeV-emission has been found for the data sample. Flux upper limits are given. A special analysis has been performed for GRBs detected by BATSE and WATCH. Two partially and two fully contained GRBs in our field of view (FOV) were studied. For GRB 920925c which was fully contained in our FOV, the most significant excess has a probability of 7.7 10**-8 (corresponding to 5.4 sigmas) of being caused by a background fluctuation. Correcting this probability with the appropriate trial factor, yields a 99.7% confidence level for this excess to be related to the GRB (corresponding to 2.7 sigmas). This result is discussed within the framework of the WATCH detection., Comment: 8 pages, 8 figures. Accepted for publication in A&A

Published
1998

2. An Upper Limit on the Infrared Background Density from HEGRA data on Mkn501

Author

Funk, B., Magnussen, N., Meyer, H., Rhode, W., Westerhoff, S., and Wiebel-Sooth, B.

Subjects
Astrophysics
Abstract

The energy spectrum of Mkn501 in the TeV energy regime, as measured by the HEGRA (High Energy Gamma Ray Astronomy) Cerenkov telescopes during its low state in 1995/96 and during a fraction of the 1997 outburst in the TeV energy regime, is shown to place stringent upper limits on the still unknown infrared photon density in the energy region between 3 x 10**(-3) and 3 xt 10**(-1) eV. Assuming two different shapes for the unknown infrared photon spectrum in this energy range we calculate upper limits on the infrared photon density on the basis of the power-law fit obtained for the observed spectrum up to the maximum energy., Comment: 11 pages, 6 Postscript figures, Accepted for publication in Astroparticle Physics

Published
1998
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3. On the optimum spacing of stereoscopic imaging atmospheric Cherenkov telescopes

Author

Hofmann, W, Hermann, G, Konopelko, A, Krawczynski, H, Köhler, C, Pühlhofer, G, Aharonian, F.A, Akhperjanian, A.G, Aye, M, Barrio, J.A, Bernlöhr, K, Beteta, J.J.G, Bojahr, H, Contreras, J.L, Cortina, J, Daum, A, Deckers, T, Fernandez, J, Fonseca, V, Gonzalez, J.C, Heinzelmann, G, Hemberger, M, Heusler, A, Heß, M, Hohl, H, Holl, I, Horns, D, Jung, I, Kankanyan, R, Kestel, M, Kettler, J, Kohnle, A, Kornmayer, H, Kranich, D, Lampeitl, H, Lindner, A, Lorenz, E, Magnussen, N, Mang, O, Meyer, H, Mirzoyan, R, Moralejo, A, Padilla, L, Panter, M, Plaga, R, Prahl, J, Prosch, C, Rauterberg, G, Rhode, W, Röhring, A, Samorski, M, Sanchez, J.A, Schilling, M, Schmele, D, Schröder, F, Stamm, W, Völk, H.J, Wiebel-Sooth, B, Wiedner, C.A, and Willmer, M

Published
2000
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4. TeV γ-ray observations of the Crab and Mkn 501 during moonshine and twilight

Author

Kranich, D., Mirzoyan, R., Petry, D., Raubenheimer, B.C., Aharonian, F., Akhperjanian, A.G., Barrio, J.A., Beck, C., Bernlöhr, K., Bojahr, H., Contreras, J.L., Cortina, J., Daum, A., Deckers, T., Denninghoff, S., Fonseca, V., Gebauer, J., Gonzalez, J.C., Heinzelmann, G., Hemberger, M., Hermann, G., Hess, M., Heusler, A., Hofmann, W., Hohl, H., Horns, D., Ibarra, A., Kankanyan, R., Kestel, M., Kirstein, O., Köhler, C., Konopelko, A., Kornmayer, H., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Moralejo, A., Padilla, L., Panter, M., Plaga, R., Plyasheshnikov, A., Prahl, J., Pühlhofer, G., Rauterberg, G., Renault, C., Rhode, W., Roehring, A., Sahakian, V., Samorski, M., Schmele, D., Schröder, F., Stamm, W., Völk, H., Wiebel-Sooth, B., Wiedner, C., Willmer, M., Wirth, H., and Wittek, W.

Published
1999
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5. The time structure of Cherenkov images generated by TeV γ-rays and by cosmic rays

Author

Heß, M., Bernlöhr, K., Daum, A., Hemberger, M., Hermann, G., Hofmann, W., Lampeitl, H., Aharonian, F.A., Akhperjanian, A.G., Barrio, J.A., Beteta, J.J.G., Contreras, J.L., Cortina, J., Deckers, T., Fernandez, J., Fonseca, V., Gonzalez, J.C., Heinzelmann, G., Heusler, A., Hohl, H., Holl, I., Horns, D., Kankanyan, R., Kestel, M., Kirstein, O., Köhler, C., Konopelko, A., Kornmayer, H., Kranich, D., Krawczynski, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Panter, M., Petry, D., Plaga, R., Prahl, J., Prosch, C., Pühlhofer, G., Rauterberg, G., Rhode, W., Röhring, A., Samorski, M., Sanchez, J.A., Schmele, D., Schröder, F., Stamm, W., Völk, H.J., Wiebel-Sooth, B., Wiedner, C.A., and Willmer, M.

Published
1999
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6. Performance of the stereoscopic system of the HEGRA imaging air Čerenkov telescopes: Monte Carlo simulations and observations

Author

Konopelko, A., Hemberger, M., Aharonian, F., Daum, A., Hofmann, W., Köhler, C., Krawczynski, H., Völk, H.J., Akhperjanian, A., Barrio, J., Bernlöhr, K., Bojahr, H., Contreras, J., Cortina, J., Deckers, T., Denninghoff, S., Fernandez, J., Fonseca, V., Gonzalez, J., Haustein, V., Heinzelmann, G., Hermann, G., Heß, M., Heusler, A., Hohl, H., Holl, I., Horns, D., Kankanian, R., Kestel, M., Kettler, J., Kirstein, O., Kornmayer, H., Kranich, D., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Möller, H., Moralejo, A., Padilla, L., Panter, M., Petry, D., Plaga, R., Plyasheshnikov, A., Prahl, J., Prosch, C., Pühlhofer, G., Rauterberg, G., Rhode, W., Röhring, A., Sahakian, V., Samorski, M., Sanchez, J., Schmele, D., Schroeder, F., Stamm, W., Wiebel-Sooth, B., Wiedner, C.A., Willmer, M., and Wirth, H.

Published
1999
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7. Measurement of the radial distribution of Cherenkov light generated by TeV γ-ray air showers

Author

Aharonian, F.A, Akhperjanian, A.G, Barrio, J.A, Bernlöhr, K, Bojahr, H, Contreras, J.L, Cortina, J, Daum, A, Deckers, T, Fonseca, V, Fraß, A, Gonzalez, J.C, Heinzelmann, G, Hemberger, M, Hermann, G, Heß, M, Heusler, A, Hofmann, W, Hohl, H, Holl, I, Horns, D, Ibarra, I, Kankanyan, R, Kestel, M, Kirstein, O, Köhler, C, Konopelko, A, Kornmayer, H, Kranich, D, Krawczynski, H, Lampeitl, H, Lindner, A, Lorenz, E, Magnussen, N, Meyer, H, Mirzoyan, R, Moralejo, A, Padilla, L, Panter, M, Petry, D, Plaga, R, Prahl, J, Prosch, C, Pühlhofer, G, Rauterberg, G, Rhode, W, Röhring, A, Samorski, M, Schmele, D, Schröder, F, Stamm, W, Ulrich, M, Völk, H.J, Wiebel-Sooth, B, Wiedner, C.A, Willmer, M, and Wirth, H

Published
1999
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8. Cherenkov light based measurement of extensive air showers around the knee with the HEGRA experiment

Author

Aharonian, F., Akhperjanian, A.G., Barrio, J.A., Belgarian, A.S., Bernlöhr, K., Bojahr, H., Contreras, J.L., Cortina, J., Daum, A., Deckers, T., Denninghoff, S., Fernandez, J., Fonseca, V., Gonzales, J.C., Heinzelmann, G., Hemberger, M., Hermann, G., Hess, M., Heusler, A., Hofmann, W., Hohl, H., Horns, D., Kankanyan, R., Kestel, M., Kirstein, O., Köhler, C., Konopelko, A., Kornmayer, H., Kranich, D., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Panter, M., Petry, D., Plaga, R., Plyasheshnikov, A., Prahl, J., Prosch, C., Pühlhofer, G., Rauterberg, G., Renault, C., Rhode, W., Röhring, A., Sahakian, V., Samorski, M., Schmele, D., Schröder, F., Stamm, W., Völk, H.J., and Wiebel-Sooth, B.

Published
1999
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19. Measurement of the radial distribution of Cherenkov light generated by TeV gamma-ray air showers

Author

Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Bojahr, H., Contreras, J. L., Juan Cortina, Daum, A., Deckers, T., Fonseca, V., Fraß, A., Gonzalez, J. C., Heinzelmann, G., Hemberger, M., Hermann, G., Heß, M., Heusler, A., Hofmann, W., Hohl, H., Holl, I., Horns, D., Ibarra, I., Kankanyan, R., Kestel, M., Kirstein, O., Köhler, C., Konopelko, A., Kornmayer, H., Kranich, D., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Panter, M., Petry, D., Plaga, R., Prahl, J., Prosch, C., Pühlhofer, G., Rauterberg, G., Rhode, W., Röhring, A., Samorski, M., Schmele, D., Schröder, F., Stamm, W., Ulrich, M., Völk, H. J., Wiebel-Sooth, B., Wiedner, C. A., Willmer, M., and Wirth, H.

Subjects
Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, HEGRA, FOS: Physical sciences, Astronomy and Astrophysics, IACT, Radial distribution, Astrophysics, Shower, Air shower, High Energy Physics::Experiment, Cherenkov radiation, Zenith
Abstract

Using air showers induced by TeV gamma-rays from Mrk 501, the radial distribution of Cherenkov light is investigated. The shower geometry is reconstructed from the stereoscopic shower images obtained with the telescopes of the HEGRA IACT system. We observe a change in the shape of the light pool with shower energy, and with zenith angle. Data are well reproduced by Monte-Carlo air shower simulations., Comment: 15 Pages, 8 figures, Latex

Published
1998
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20. The time structure of Cherenkov images generated by TeV gamma-rays and by cosmic rays

Author

Heß, M., Bernlöhra, K., Daum, A., Hemberger, M., Hermann, G., Hofmann, W., Lampeitl, H., Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., Beteta, J. J. G., Contreras, J. L., Juan Cortina, Deckers, T., Fernandez, J., Fonseca, V., Gonzalez, J. C., Heinzelmann, G., Heusler, A., Hohl, H., Holl, I., Horns, D., Kankanyan, R., Kestel, M., Kirstein, O., Köhler, C., Konopelko, A., Kornmayer, H., Kranich, D., Krawczynski, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Panter, M., Petry, D., Plaga, R., Prahl, J., Prosch, C., Pühlhofer, G., Rauterberg, G., Rhode, W., Röhring, A., Samorski, M., Sanchez, J. A., Schmele, D., Schröder, F., Stamm, W., Völk, H. J., Wiebel-Sooth, B., Wiedner, C. A., and Willmer, M.

Subjects
Physics, Photon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, HEGRA, FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, Astrophysics, law.invention, Core (optical fiber), Telescope, Shower, law, Cherenkov radiation
Abstract

The time profiles of Cherenkov images of cosmic-ray showers and of gamma-ray showers are investigated, using data gathered with the HEGRA system of imaging atmospheric Cherenkov telescopes during the 1997 outbursts of Mrk 501. Photon arrival times are shown to vary across the shower images. The dominant feature is a time gradient along the major axis of the images. The gradient varies with the distance between the telescope and the shower core, and is maximal for large distances. The time profiles of cosmic-ray showers and of gamma-ray showers differ in a characteristic fashion. The main features of the time profiles can be understood in terms of simple geometrical models. Use of the timing information towards improved shower reconstruction and cosmic-ray suppression is discussed., Comment: 25 Pages, 16 figures, Latex

Published
1998
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21. The Energy Spectrum of TeV Gamma Rays from the Crab Nebula as Measured by the HEGRA System of Imaging Air Cerenkov Telescopes

Author

Aharonian, F. A., primary, Akhperjanian, A. G., additional, Barrio, J. A., additional, Bernlohr, K., additional, Bojahr, H., additional, Calle, I., additional, Contreras, J. L., additional, Cortina, J., additional, Denninghoff, S., additional, Fonseca, V., additional, Gonzalez, J. C., additional, Gotting, N., additional, Heinzelmann, G., additional, Hemberger, M., additional, Hermann, G., additional, Heusler, A., additional, Hofmann, W., additional, Horns, D., additional, Ibarra, A., additional, Kankanyan, R., additional, Kestel, M., additional, Kettler, J., additional, Kohler, C., additional, Kohnle, A., additional, Konopelko, A., additional, Kornmeyer, H., additional, Kranich, D., additional, Krawczynski, H., additional, Lampeitl, H., additional, Lindner, A., additional, Lorenz, E., additional, Lucarelli, F., additional, Magnussen, N., additional, Mang, O., additional, Meyer, H., additional, Mirzoyan, R., additional, Moralejo, A., additional, Padilla, L., additional, Panter, M., additional, Plaga, R., additional, Plyasheshnikov, A., additional, Prahl, J., additional, Puhlhofer, G., additional, Rauterberg, G., additional, Rohring, A., additional, Sahakian, V., additional, Samorski, M., additional, Schilling, M., additional, Schmele, D., additional, Schroder, F., additional, Stamm, W., additional, Tluczykont, M., additional, Volk, H. J., additional, Wiebel‐Sooth, B., additional, Wiedner, C., additional, Willmer, M., additional, and Wittek, W., additional

Published
2000
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22. Cosmic ray proton spectrum determined with the imaging atmospheric Cherenkov technique

Author

Aharonian, F., primary, Akhperjanian, A. G., additional, Barrio, J. A., additional, Belgarian, A. S., additional, Bernlöhr, K., additional, Beteta, J. J. G., additional, Bojahr, H., additional, Bradbury, S., additional, Calle, I., additional, Contreras, J. L., additional, Cortina, J., additional, Daum, A., additional, Deckers, T., additional, Denninghoff, S., additional, Fonseca, V., additional, Gonzalez, J. C., additional, Heinzelmann, G., additional, Hemberger, M., additional, Hermann, G., additional, Hess, M., additional, Heusler, A., additional, Hofmann, W., additional, Hohl, H., additional, Holl, I., additional, Horns, D., additional, Ibarra, A., additional, Kankanyan, R., additional, Kestel, M., additional, Kirstein, O., additional, Köhler, C., additional, Konopelko, A., additional, Kornmeyer, H., additional, Kranich, D., additional, Krawczynski, H., additional, Lampeitl, H., additional, Lindner, A., additional, Lorenz, E., additional, Magnussen, N., additional, Meyer, H., additional, Mirzoyan, R., additional, Moralejo, A., additional, Padilla, L., additional, Panter, M., additional, Petry, D., additional, Plaga, R., additional, Plyasheshnikov, A., additional, Prahl, J., additional, Prosch, C., additional, Pühlhofer, G., additional, Rauterberg, G., additional, Renault, C., additional, Rhode, W., additional, Röhring, A., additional, Sahakian, V., additional, Samorski, M., additional, Schmele, D., additional, Schröder, F., additional, Stamm, W., additional, Völk, H. J., additional, Wiebel-Sooth, B., additional, Wiedner, C. A., additional, Willmer, M., additional, and Wirth, H., additional

Published
1999
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24. First results on the performance of the HEGRA IACT array

Author

Daum, A., primary, Hermann, G., additional, Heß, M., additional, Hofmann, W., additional, Lampeitl, H., additional, Pühlhofer, G., additional, Aharonian, F., additional, Akhperjanian, A.G., additional, Barrio, J.A., additional, Beglarian, A.S., additional, Bernlöhr, K., additional, Beteta, J.J.G., additional, Bradbury, S.M., additional, Contreras, J.L., additional, Cortina, J., additional, Deckers, T., additional, Feigl, E., additional, Fernandez, J., additional, Fonseca, V., additional, Fraß, A., additional, Funk, B., additional, Gonzalez, J.C., additional, Heinzelmann, G., additional, Hemberger, M., additional, Heusler, A., additional, Holl, I., additional, Horns, D., additional, Kankanyan, R., additional, Kirstein, O., additional, Köhler, C., additional, Konopelko, A., additional, Kranich, D., additional, Krawczynski, H., additional, Kornmayer, H., additional, Lindner, A., additional, Lorenz, E., additional, Magnussen, N., additional, Meyer, H., additional, Mirzoyan, R., additional, Möller, H., additional, Moralejo, A., additional, Padilla, L., additional, Panter, M., additional, Petry, D., additional, Plaga, R., additional, Prahl, J., additional, Prosch, C., additional, Rauterberg, G., additional, Rhode, W., additional, Röhring, A., additional, Sahakian, V., additional, Samorski, M., additional, Sanchez, J.A., additional, Schmele, D., additional, Stamm, W., additional, Ulrich, M., additional, Völk, H.J., additional, Westerhoff, S., additional, Wiebel-Sooth, B., additional, Wiedner, C.A., additional, Willmer, M., additional, and Wirth, H., additional

Published
1997
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25. Study of the temporal and spectral characteristics of TeV gamma radiation from Mkn 501 during a state of high activity by the HEGRA IACT array

Author

Aharonian, F., primary, Akhperjanian, A., additional, Barrio, J., additional, Bernlöhr, K., additional, Beteta, J., additional, Bradbury, S., additional, Contreras, J., additional, Cortina, J., additional, Daum, A., additional, Deckers, T., additional, Feigl, E., additional, Fernandez, J., additional, Fonseca, V., additional, Frass, A., additional, Funk, B., additional, Gonzalez, J., additional, Haustein, V., additional, Heinzelmann, G., additional, Hemberger, M., additional, Hermann, G., additional, Hess, M., additional, Heusler, A., additional, Hofmann, W., additional, Holl, I., additional, Horns, D., additional, Kankanian, R., additional, Kirstein, O., additional, Köhler, C., additional, Konopelko, A., additional, Kornmayer, H., additional, Kranich, D., additional, Krawczynski, H., additional, Lampeitl, H., additional, Lindner, A., additional, Lorenz, E., additional, Magnussen, N., additional, Meyer, H., additional, Mirzoyan, R., additional, Möller, H., additional, Moralejo, A., additional, Padilla, L., additional, Panter, M., additional, Petry, D., additional, Plaga, R., additional, Prahl, J., additional, Prosch, C., additional, Pühlhofer, G., additional, Rauterberg, G., additional, Rhode, W., additional, Rivero, R., additional, Röhring, A., additional, Sahakian, V., additional, Samorski, M., additional, Sanchez, J., additional, Schmele, D., additional, Schmidt, T., additional, Stamm, W., additional, Ulrich, M., additional, Völk, H., additional, Westerhoff, S., additional, Wiebel-Sooth, B., additional, Wiedner, C. A., additional, Willmer, M., additional, and Wirth, H., additional

Published
1997
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26. An optimized method for the reconstruction of the direction of air showers for scintillator arrays

Author

Krawczynski, H., primary, Prahl, J., additional, Arqueros, F., additional, Bradbury, S., additional, Cortina, J., additional, Deckers, T., additional, Eckmann, R., additional, Feigl, E., additional, Fernandez, J., additional, Fonseca, V., additional, Funk, B., additional, Gebauer, J., additional, Gonzalez, J.C., additional, Haustein, V., additional, Heinzelmann, G., additional, Holl, I., additional, Kirstein, O., additional, Kornmeyer, H., additional, Krennrich, F., additional, Lindner, A., additional, Lorenz, E., additional, Magnussen, N., additional, Martinez, S., additional, Merck, M., additional, Meyer, H., additional, Mirzoyan, R., additional, Möller, H., additional, Moralejo, A., additional, Müller, N., additional, Padilla, L., additional, Petry, D., additional, Plaga, R., additional, Prosch, C., additional, Rauterberg, G., additional, Rhode, W., additional, Samorski, M., additional, Sanchez, J.A., additional, Schmele, D., additional, Sooth, R.N., additional, Stamm, W., additional, Westerhoff, S., additional, Wiebel-Sooth, B., additional, and Willmer, M., additional

Published
1996
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27. Design and performance of the lead-concrete geiger tower array within the HEGRA experiment

Author

Rhode, W, primary, Becker, K.H, additional, Daum, K, additional, Falkenberg, F, additional, Fonseca, V, additional, Funk, B, additional, Greve, W, additional, Hartmann, S, additional, Krawczynski, H, additional, Magnussen, N, additional, Meyer, H, additional, Möller, H, additional, Odeh, T, additional, Prahl, J, additional, Samorski, M, additional, Sauerland, K, additional, Schmele, D, additional, Smarsch, E, additional, Sooth, R.N, additional, Westerhoff, S, additional, and Wiebel-Sooth, B, additional

Published
1996
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28. Detection of gamma rays above 1 TeV from the Crab Nebula by the second HEGRA imaging atmospheric Cherenkov telescope at La Palma

Author

Konopelko, A., primary, Aharonian, F., additional, Akhperjanian, A., additional, Arqueros, F., additional, Aslanian, G., additional, Beglarian, A., additional, Bradbury, S., additional, Cortina, J., additional, Daum, A., additional, Deckers, T., additional, Fernandez, J., additional, Fonseca, V., additional, Funk, B., additional, Gonzalez, J.C., additional, Greve, W., additional, Heinzelmann, G., additional, Hemberger, M., additional, Hermann, G., additional, Heβ, M., additional, Heusler, A., additional, Holl, I., additional, Hofmann, W., additional, Kankanian, R., additional, Karle, A., additional, Kirstein, O., additional, Köhler, C., additional, Kohnle, A., additional, Krawczynski, H., additional, Krennrich, F., additional, Lindner, A., additional, Lorenz, E., additional, Magnussen, N., additional, Martinez, S., additional, Merck, M., additional, Meyer, H., additional, Mirzoyan, R., additional, Möller, H., additional, Moralejo, A., additional, Müller, N., additional, Padilla, L., additional, Panter, M., additional, Petry, D., additional, Plaga, R., additional, Plyasheshnikov, A., additional, Prahl, J., additional, Prosch, C., additional, Rauterberg, G., additional, Rhode, W., additional, Renker, D., additional, Sahakian, V., additional, Samorski, M., additional, Sanchez, J.A., additional, Sauerland, K., additional, Schmele, D., additional, Smarsch, E., additional, Sooth, R.N., additional, Stamm, W., additional, Ulrich, M., additional, Völk, H.J., additional, Westerhoff, S., additional, Wiebel-Sooth, B., additional, Wiedner, C.A., additional, Willmer, M., additional, and Wirth, H., additional

Published
1996
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30. Search for isotropic γ radiation in the cosmological window between 65 and 200 TeV

Author

Karle, A., primary, Martinez, S., additional, Plaga, R., additional, Arqueros, F., additional, Becker, K.H., additional, Bradbury, S.M., additional, Fernandez, J., additional, Fernandez, P., additional, Fonseca, V., additional, Funk, B., additional, Haustein, V., additional, Heinzelmann, G., additional, Henke, V., additional, Krawczynski, H., additional, Krennrich, F., additional, Kühn, M., additional, Lindner, A., additional, Lorenz, E., additional, Magnussen, N., additional, Matheis, V., additional, Merck, M., additional, Meyer, H., additional, Mirzoyan, R., additional, Müller, N., additional, Petry, D., additional, Prahl, J., additional, Prosch, C., additional, Renker, D., additional, Rhode, W., additional, Rozanska, M., additional, Samorski, M., additional, Sander, H., additional, Schmele, D., additional, Sooth, R.N., additional, Stamm, W., additional, Westerhoff, S., additional, Wiebel-Sooth, B., additional, and Willmer, M., additional

Published
1995
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31. Correlated Intense X-Ray and TeV Activity of Markarian 501 in 1998 June

Author

Sambruna, R. M., Aharonian, F. A., Krawczynski, H., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Bojahr, H., Calle, I., Contreras, J. L., Cortina, J., Denninghoff, S., Fonseca, V., Gonzalez, J. C., Götting, N., Heinzelmann, G., Hemberger, M., Hermann, G., Heusler, A., Hofmann, W., Horns, D., Ibarra, A., Kankanyan, R., Kestel, M., Kettler, J., Köhler, C., Kohnle, A., Konopelko, A., Kornmeyer, H., Kranich, D., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Mang, O., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Panter, M., Plaga, R., Plyasheshnikov, A., Prahl, J., Pühlhofer, G., Rauterberg, G., Röhring, A., Sahakian, V., Samorski, M., Schilling, M., Schmele, D., Schröder, F., Stamm, W., Tluczykont, M., Völk, H. J., Wiebel-Sooth, B., Wiedner, C., Willmer, M., Wittek, W., Chou, L., Coppi, P. S., Rothschild, R., and Urry, C. M.

Abstract

We present exactly simultaneous X-ray and TeV monitoring with RXTEand HEGRA of the TeV blazar Mrk 501 during 15 days in 1998 June. After an initial period of very low flux at both wavelengths, the source underwent a remarkable flare in the TeV and X-ray energy bands, lasting for about 6 days and with a larger amplitude at TeV energies than in the X-ray band. At the peak of the TeV flare, rapid TeV flux variability on subhour timescales is found. Large spectral variations are observed at X-rays, with the 3-20 keV photon index of a pure power-law continuum flattening from ? = 2.3 to ? = 1.8 on a timescale of 2-3 days. This implies that during the maximum of the TeV activity the synchrotron peak shifted to energies 50 keV, a behavior similar to that observed during the longer lasting, more intense flare in 1997 April. The TeV spectrum during the flare is described by a power law with photon index ? = 1.9 and an exponential cutoff at ~4 TeV; an indication for spectral softening during the flare decay is observed in the TeV hardness ratios. Our results generally support a scenario in which the TeV photons are emitted via inverse Compton scattering of ambient seed photons by the same electron population responsible for the synchrotron X-rays. The simultaneous spectral energy distributions can be fit with a one-zone synchrotron self-Compton model assuming a substantial increase of the magnetic field and the electron energy by factors of 3 and 10, respectively.

Published
2000
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32. Measurement of the flux, spectrum, and variability of TeV γ-rays from Mkn 501 during a state of high activity

Author

Aharonian, F., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Beteta, J. J. G., Bradbury, S. M., Contreras, J. L., Cortina, J., Daum, A., Deckers, T., Feigl, E., Fernandez, J., Fonseca, V., Fraß, A., Burkhardt Funk, Gonzalez, J. C., Haustein, V., Heinzelmann, G., Hemberger, M., Hermann, G., Heß, M., Heusler, A., Hofmann, W., Holl, I., Horns, D., Kankanian, R., Kirstein, O., Köhler, C., Konopelko, A., Kornmayer, H., Kranich, D., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Möller, H., Moralejo, A., Padilla, L., Panter, M., Petry, D., Plaga, R., Prahl, J., Prosch, C., Pühlhofer, G., Rauterberg, G., Rhode, W., Rivero, R., Röhring, A., Sahakian, V., Samorski, M., Sanchez, J. A., Schmele, D., Schmidt, T., Stamm, W., Ulrich, M., Völk, H. J., Westerhoff, S., Wiebel-Sooth, B., Wiedner, C. A., Willmer, M., and Wirth, H.

33. The temporal characteristics of the TeV gamma-radiation from Mkn 501 in 1997 - I. Data from the stereoscopic imaging atmospheric Cherenkov telescope system of HEGRA

Author

Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Bojahr, H., Contreras, J. L., Cortina, J., Daum, A., Deckers, T., Fonseca, V., Gonzalez, J. C., Heinzelmann, G., Hemberger, M., Hermann, G., Heß, M., Heusler, A., Hofmann, W., Hohl, H., Horns, D., Aitor Ibarra Ibaibarriaga, Kankanyan, R., Kirstein, O., Köhler, C., Konopelko, A., Kornmeyer, H., Kranich, D., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Panter, M., Petry, D., Plaga, R., Plyasheshnikov, A., Prahl, J., Pühlhofer, G., Rauterberg, G., Renault, C., Rhode, W., Sahakian, V., Samorski, M., Schmele, D., Schröder, F., Stamm, W., Völk, H. J., Wiebel-Sooth, B., Wiedner, C., Willmer, M., and Wirth, H.

34. Energy spectrum and chemical composition of cosmic rays between 0.3 and 10 PeV determined from the Cherenkov-light and charged-particle distributions in air showers the HEGRA-Collaboration

Author

Arqueros, F., Barrio, J. A., Bernlöhr, K., Bojahr, H., Calle, I., Contreras, J. L., Cortina, J., Deckers, T., Denninghoff, S., Fonseca, V., Gebauer, J., González, J. C., Haustein, V., Heinzelmann, G., Hohl, H., Horns, D., Ibarra, A., Kestel, M., Oliver Kirstein, Kornmayer, H., Kranich, D., Krawczynski, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Petry, D., Plaga, R., Prahl, J., Rauterberg, G., Rhode, W., Röhring, A., Samorski, M., Schmele, D., Schröder, F., Stamm, W., Wiebel-Sooth, B., Willmer, M., and Wittek, W.

35. Energy spectrum and chemical composition of cosmic rays between 0.3 and 10 PeV determined from the Cherenkov-light and charged-particle distributions in air showers

Author

Wittek, W., Willmer, M., Wiebel-Sooth, B., Stamm, W., Schroder, F., Schmele, D., Samorski, M., Rohring, A., Rhode, W., Rauterberg, G., Prahl, J., Plaga, R., Petry, D., Padilla, L., Moralejo, A., Mirzoyan, R., Meyer, H., Magnussen, N., Lorenz, E., Lindner, A., Krawczynski, H., Kranich, D., Kornmayer, H., Kirstein, O., Kestel, M., Ibarra, A., Horns, D., Hohl, H., Heinzelmann, G., Haustein, V., Gonzalez, Jc, Gebauer, J., Fonseca, V., Denninghoff, S., Deckers, T., Juan Cortina, Contreras, Jl, Calle, I., Bojahr, H., Bernlohr, K., Barrio, Ja, and Arqueros, F.

36. Search for very high energy γ radiation from the radio bright region DR4 of the SNR G78.2+2.1

Author

Prosch, C., Feigl, E., Plaga, R., Fernando Arqueros, Cortina, J., Fernandez, J., Fernandez, P., Fonseca, V., Funk, B., Gonzalez, J. C., Haustein, V., Heinzelmann, G., Karle, A., Krawczynski, H., Krennrich, F., Kühn, M., Lindner, A., Lorenz, E., Magnussen, N., Martinez, S., Matheis, V., Merck, M., Meyer, H., Mirzoyan, R., Möller, H., Moralejo, A., Müller, N., Padilla, L., Prahl, J., Rhode, W., Samorski, M., Sanchez, J. A., Sander, H., Schmele, D., Stamm, W., Wahl, H., Westerhoff, S., Wiebel-Sooth, B., and Willmer, M.

37. Detection of γ-rays above 1.5 TeV from Mkn 501

Author

Bradbury, S. M., Deckers, T., Petry, D., Konopelko, A., Aharonian, F., Akhperjanian, A. G., Barrio, J. A., Beglarian, A. S., Beteta, J. J. G., Contreras, J. L., Cortina, J., Daum, A., Feigl, E., Fernandez, J., Fonseca, V., Fraß, A., Funk, B., Gonzalez, J. C., Haustein, V., Heinzelmann, G., Hemberger, M., Hermann, G., Hess, M., Heusler, A., Holl, I., Hofmann, W., Horns, D., Kankanian, R., Kirstein, O., Köhler, C., Kranich, D., Krawczynski, H., Kornmayer, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Möller, H., Moralejo, A., Luis Padilla, Panter, M., Plaga, R., Prahl, J., Prosch, C., Pühlhofer, G., Rauterberg, G., Rhode, W., Sahakian, V., Samorski, M., Sanchez, J. A., Schmele, D., Stamm, W., Ulrich, M., Völk, H. J., Westerhoff, S., Wiebel-Sooth, B., Wiedner, C. A., Willmer, M., and Wirth, H.

38. First results on the performance of the HEGRA IACT array

Author

Daum, A., Hermann, G., Heß, M., Hofmann, W., Lampeitl, H., Pühlhofer, G., Aharonian, F., Akhperjanian, A. G., Barrio, J. A., Beglarian, A. S., Bernlöhr, K., Beteta, J. J. G., Bradbury, S. M., Contreras, J. L., Cortina, J., Deckers, T., Feigl, E., Fernandez, J., Fonseca, V., Fraß, A., Burkhardt Funk, Gonzalez, J. C., Heinzelmann, G., Hemberger, M., Heusler, A., Holl, I., Horns, D., Kankanyan, R., Kirstein, O., Köhler, C., Konopelko, A., Kranich, D., Krawczynski, H., Kornmayer, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Möller, H., Moralejo, A., Padilla, L., Panter, M., Petry, D., Plaga, R., Prahl, J., Prosch, C., Rauterberg, G., Rhode, W., Röhring, A., Sahakian, V., Samorski, M., Sanchez, J. A., Schmele, D., Stamm, W., Ulrich, M., Völk, H. J., Westerhoff, S., Wiebel-Sooth, B., Wiedner, C. A., Willmer, M., and Wirth, H.

39. HEGRA search for TeV emission from BL Lacertae objects

Author

Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Bojahr, H., Calle, I., Contreras, J. L., Cortina, J., Daum, A., Deckers, T., Denninghoff, S., Fonseca, V., Gonzalez, J. C., Heinzelmann, G., Hemberger, M., Hermann, G., Heß, M., Heusler, A., Hofmann, W., Hohl, H., Horns, D., Ibarra, A., Kankanyan, R., Kestel, M., Kettler, J., Köhler, C., Konopelko, A., Kornmeyer, H., Kranich, D., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Mang, O., Meyer, H., Mirzoyan, R., Moralejo, A., Luis Padilla, Panter, M., Petry, D., Plaga, R., Plyasheshnikov, A., Prahl, J., Pühlhofer, G., Rauterberg, G., Renault, C., Rhode, W., Röhring, A., Sahakian, V., Samorski, M., Schmele, D., Schilling, M., Schröder, F., Stamm, W., Völk, H. J., Wiebel-Sooth, B., Wiedner, C., Willmer, M., and Wittek, W.

40. Phase-resolved TeV gamma-ray characteristics of the Crab and Geminga pulsars

Author

Aharonian, F., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Bojahr, H., Contreras, J. L., Cortina, J., Daum, A., Deckers, T., Denninghoff, S., Fonseca, V., Gonzalez, J. C., Heinzelmann, G., Hemberger, M., Hermann, G., Heß, M., Heusler, A., Hofmann, W., Hohl, H., Horns, D., Ibarra, A., Kankanyan, R., Kestel, M., Kirstein, O., Köhler, C., Konopelko, A., Kornmeyer, H., Kranich, D., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Moralejo, A., Luis Padilla, Panter, M., Petry, D., Plaga, R., Plyasheshnikov, A., Prahl, J., Pühlhofer, G., Rauterberg, G., Renault, C., Rhode, W., Röhring, A., Sahakian, V., Samorski, M., Schmele, D., Schr̈der, F., Stamm, W., Völk, H., Wiebel-Sooth, B., Wiedner, C., Willmer, M., and Wirth, H.

41. The time structure of Cherenkov images generated by TeV gamma-rays and by cosmic rays

Author

Hess, M., Bernlohr, K., Daum, A., Hemberger, M., Hermann, G., Hofmann, W., Lampeitl, H., Aharonian, Fa, Akhperjanian, Ag, Barrio, Ja, Beteta, Jjg, Contreras, Jl, Cortina, J., Deckers, T., Fernandez, J., Fonseca, V., Gonzalez, Jc, Heinzelmann, G., Heusler, A., Hohl, H., Holl, I., Horns, D., Kankanyan, R., Kestel, M., Kirstein, O., Kohler, C., Konopelko, A., Kornmayer, H., Kranich, D., Krawczynski, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Moralejo, A., Luis Padilla, Panter, M., Petry, D., Plaga, R., Prahl, J., Prosch, C., Puhlhofer, G., Rauterberg, G., Rhode, W., Rohring, A., Samorski, M., Sanchez, Ja, Schmele, D., Schroder, F., Stamm, W., Volk, Hj, Wiebel-Sooth, B., Wiedner, Ca, and Willmer, M.

42. Correlated intense X-ray and Tev activity of Markarian 501 in 1998 june

Author

Sambruna, R. M., Aharonian, F. A., Krawczynski, H., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Bojahr, H., Calle, I., Contreras, J. L., Juan Cortina, Denninghoff, S., Fonseca, V., Gonzalez, J. C., Götting, N., Heinzelmann, G., Hemberger, M., Hermann, G., Heusler, A., Hofmann, W., Horns, D., Ibarra, A., Kankanyan, R., Kestel, M., Kettler, J., Köhler, C., Kohnle, A., Konopelko, A., Kornmeyer, H., Kranich, D., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Mang, O., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Panter, M., Plaga, R., Plyasheshnikov, A., Prahl, J., Pühlhofer, G., Rauterberg, G., Röhring, A., Sahakian, V., Samorski, M., Schilling, M., Schmele, D., Schröder, F., Stamm, W., Tluczykont, M., Völk, H. J., Wiebel-Sooth, B., Wiedner, C., Willmer, M., Wittek, W., Chou, L., Coppi, P. S., Rothschild, R., and Urry, C. M.

43. Observations of Mkn 421 during 1997 and 1998 in the energy range above 500 GeV with the HEGRA stereoscopic Cherenkov telescope system

Author

Aharonian, Fa, Akhperjanian, Ag, Andronache, M., Barrio, Ja, Bernlohr, K., Bojahr, H., Calle, I., Contreras, Jl, Cortina, J., Daum, A., Deckers, T., Denninghoff, S., Fonseca, V., Gonzalez, Jc, Gotting, N., Heinzelmann, G., Hemberger, M., Hermann, G., Hess, M., Heusler, A., Hofmann, W., Hohl, H., Horns, D., Ibarra, A., Kankanyan, R., Kettler, J., Kohler, C., Konopelko, A., Kornmeyer, H., Kestel, M., Kranich, D., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Mang, O., Meyer, H., Mirzoyan, R., Moralejo, A., Luis Padilla, Panter, M., Petry, D., Plaga, R., Plyasheshnikov, A., Prahl, J., Puhlhofer, G., Rauterberg, G., Renault, C., Rhode, W., Rohring, A., Sahakian, V., Samorski, M., Schilling, M., Schroder, F., Stamm, W., Volk, Hj, Wiebel-Sooth, B., Wiedner, C., Willmer, M., and Wittek, W.

44. Study of the temporal and spectral characteristics of TeV gamma radiation from Mkn501 during a state of high activity by the HEGRA IACT array

Author

Wirth, H., Willmer, M., Wiedner, Ca, Wiebel-Sooth, B., Westerhoff, S., Volk, H., Ulrich, M., Stamm, W., Schmidt, T., Schmele, D., Sanchez, J., Samorski, M., Sahakian, V., Rohring, A., Rivero, R., Rhode, W., Rauterberg, G., Puhlhofer, G., Prosch, C., Prahl, J., Plaga, R., Petry, D., Panter, M., Padilla, L., Moralejo, A., Moller, H., Mirzoyan, R., Meyer, H., Magnussen, N., Lorenz, E., Lindner, A., Lampeitl, H., Krawczynski, H., Kranich, D., Kornmayer, H., Konopelko, A., Kohler, C., Kirstein, O., Kankanian, R., Horns, D., Holl, I., Hofmann, W., Heusler, A., Hess, M., Hermann, G., Hemberger, M., Heinzelmann, G., Haustein, V., Gonzalez, J., Funk, B., Frass, A., Fonseca, V., Fernandez, J., Feigl, E., Deckers, T., Daum, A., Juan Cortina, Contreras, J., Bradbury, S., Beteta, J., Bernlohr, K., Barrio, J., Akhperjanian, A., and Aharonian, F.

45. The energy spectrum of TeV gamma rays from the Crab Nebula as measured by the HEGRA system of imaging air Cerenkov telescopes

Author

Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Bojahr, H., Calle, I., Contreras, J. L., Juan Cortina, Denninghoff, S., Fonseca, V., Gonzalez, J. C., Götting, N., Heinzelmann, G., Hemberger, M., Hermann, G., Heusler, A., Hofmann, W., Horns, D., Ibarra, A., Kankanyan, R., Kestel, M., Kettler, J., Köhler, C., Kohnle, A., Konopelko, A., Kornmeyer, H., Kranich, D., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Lucarelli, F., Magnussen, N., Mang, O., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Panter, M., Plaga, R., Plyasheshnikov, A., Prahl, J., Pühlhofer, G., Rauterberg, G., Röhring, A., Sahakian, V., Samorski, M., Schilling, M., Schmele, D., Schröder, F., Stamm, W., Tluczykont, M., Völk, H. J., Wiebel-Sooth, B., Wiedner, C., Willmer, M., and Wittek, W.

46. On the optimum spacing of stereoscopic imaging atmospheric Cherenkov telescopes

Author

Hofmann, W., Hermann, G., Konopelko, A., Krawczynski, H., Köhler, C., Pühlhofer, G., Aharonian, F. A., Akhperjanian, A. G., Aye, M., Barrio, J. A., Bernlöhr, K., Beteta, J. J. G., Bojahr, H., Contreras, J. L., Juan Cortina, Daum, A., Deckers, T., Fernandez, J., Fonseca, V., Gonzalez, J. C., Heinzelmann, G., Hemberger, M., Heusler, A., Heß, M., Hohl, H., Holl, I., Horns, D., Jung, I., Kankanyan, R., Kestel, M., Kettler, J., Kohnle, A., Kornmayer, H., Kranich, D., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Mang, O., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Panter, M., Plaga, R., Prahl, J., Prosch, C., Rauterberg, G., Rhode, W., Röhring, A., Samorski, M., Sanchez, J. A., Schilling, M., Schmele, D., Schröder, F., Stamm, W., Völk, H. J., Wiebel-Sooth, B., Wiedner, C. A., and Willmer, M.

47. The temporal characteristics of the TeV gamma-emission from Mkn 501 in 1997 II. Results from HEGRA CT1 and CT2

Author

Aharonian, F., Akhperjanian, Ag, Barrio, Ja, Bernlohr, K., Bojahr, H., Calle, I., Contreras, Jl, Cortina, J., Daum, A., Deckers, T., Denninghoff, S., Fonseca, V., Gebauer, J., Gonzalez, Jc, Heinzelmann, G., Hemberger, M., Hermann, G., Hess, M., Heusler, A., Hofmann, W., Hohl, H., Horns, D., Ibarra, A., Kankanyan, R., Kestel, M., Kirstein, O., Kohler, C., Kornmayer, H., Kranich, D., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Moralejo, A., Luis Padilla, Panter, M., Petry, D., Plaga, R., Plyasheshnikov, A., Prahl, J., Puhlhofer, G., Rauterberg, G., Renault, C., Rhode, W., Rohring, A., Sahakian, V., Samorski, M., Schmele, D., Schroder, F., Stamm, W., Wiebel-Sooth, B., Wiedner, C., Willmer, M., Wirth, H., and Wittek, W.

48. Performance of the stereoscopic system of the HEGRA imaging air Čerenkov telescopes: Monte Carlo simulations and observations

Author

Konopelko, A., Hemberger, M., Aharonian, F., Daum, A., Hofmann, W., Köhler, C., Krawczynski, H., Völk, H. J., Akhperjanian, A., Juan Barrio, Bernlöhr, K., Bojahr, H., Contreras, J., Cortina, J., Deckers, T., Denninghoff, S., Fernandez, J., Fonseca, V., Gonzalez, J., Haustein, V., Heinzelmann, G., Hermann, G., Heß, M., Heusler, A., Hohl, H., Holl, I., Horns, D., Kankanian, R., Kestel, M., Kettler, J., Kirstein, O., Kornmayer, H., Kranich, D., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Möller, H., Moralejo, A., Padilla, L., Panter, M., Petry, D., Plaga, R., Plyasheshnikov, A., Prahl, J., Prosch, C., Pühlhofer, G., Rauterberg, G., Rhode, W., Röhring, A., Sahakian, V., Samorski, M., Sanchez, J., Schmele, D., Schroeder, F., Stamm, W., Wiebel-Sooth, B., Wiedner, C. A., Willmer, M., and Wirth, H.

49. The time averaged TeV energy spectrum of Mkn 501 of the extraordinary 1997 outburst as measured with the stereoscopic Cherenkov telescope system of HEGRA

Author

Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Bojahr, H., Calle, I., Contreras, J. L., Cortina, J., Daum, A., Deckers, T., Denninghoff, S., Fonseca, V., Gonzalez, J. C., Heinzelmann, G., Hemberger, M., Hermann, G., Heß, M., Heusler, A., Hofmann, W., Hohl, H., Horns, D., Aitor Ibarra Ibaibarriaga, Kankanyan, R., Kettler, J., Köhler, C., Konopelko, A., Kornmeyer, H., Kestel, M., Kranich, D., Krawczynski, H., Lampeitl, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Moralejo, A., Padilla, L., Panter, M., Petry, D., Plaga, R., Plyasheshnikov, A., Prahl, J., Pühlhofer, G., Rauterberg, G., Renault, C., Rhode, W., Röhring, A., Sahakian, V., Samorski, M., Schmele, D., Schröder, F., Stamm, W., Völk, H. J., Wiebel-Sooth, B., Wiedner, C., Willmer, M., and Wittek, W.

50. Search for gamma-ray bursts above 20 TeV with the HEGRA AIROBICC Cherenkov array

Author

Padilla, L., Funk, B., Krawczynski, H., Contreras, J. L., Moralejo, A., Aharonian, F., Akhperjanian, A. G., Barrio, J. A., Beteta, J. G., Juan Cortina, Deckers, T., Fonseca, V., Gebauer, H. -J, González, J. C., Heinzelmann, G., Horns, D., Kornmayer, H., Lindner, A., Lorenz, E., Magnussen, N., Meyer, H., Mirzoyan, R., Petry, D., Plaga, R., Prahl, J., Prosch, C., Rauterberg, G., Rhode, W., Röhring, A., Sahakian, V., Samorski, M., Schmele, D., Stamm, W., Wiebel-Sooth, B., Willmer, M., and Wittek, W.

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