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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. Changes in eating behaviour and food choices in families where the mother undergoes gastric bypass surgery for obesity

Author

Willmer, M., Berglind, D., Tynelius, P., Ghaderi, A., Naslund, E., and Rasmussen, F.

Subjects
Obesity -- Social aspects, Family relations -- Health aspects, Food habits -- Social aspects, Gastric bypass -- Social aspects, Food/cooking/nutrition, Health
Abstract

BACKGROUND/OBJECTIVES: There is a lack of research exploring the effects of Roux-en-Y gastric bypass (RYGB) surgery on the patient's family's eating behaviour and food choices. The aim of the current study was to investigate changes in partners' and children's eating behaviour and food choices following maternal RYGB. SUBJECTS/METHODS: Sixty-nine women and their families were recruited from RYGB waiting lists at five Swedish surgical clinics. Data were collected during home visits 3 months before and 9 months after RYGB. Anthropometrical measures were taken, the adults completed the Three-Factor Eating Questionnaire and the children completed the Children's Eating Attitudes Test (ChEAT). All participants also completed a short food frequency questionnaire. RESULTS: Changes in scores were analysed using paired t-tests for unadjusted estimates or linear regression models with robust variance (General Estimating Equations) in order to enable age- and sex-adjusted estimates for the children. There were no meaningful differences in the partners' eating behaviour or food choices. The boys, but not the girls, improved their ChEAT scores, as did the overweight/obese children in comparison with the normal-weight children. The boys, unlike the girls, also decreased their intake of soft drinks, as did the normal-weight children when compared with the overweight/obese children. CONCLUSIONS: No clear-cut changes were found in partners' eating behaviour and food choices. Eating attitudes and soft drinks intake were improved among boys but not among girls. Differing modelling behaviour may partially explain these findings, but available data did not allow us to understand the underlying mechanisms. doi:10.1038/ejcn.2015.136; published online 2 September 2015, INTRODUCTION For morbidly obese patients, bariatric surgery produces significant long-term weight loss and reduction in comorbidities, together with relatively low complication rates. (1-3) Laparoscopic Roux-en-Y gastric bypass (RYGB) accounts for [...]

Published
2016
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9. 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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10. 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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11. 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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12. 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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13. 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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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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27. Stem cell-mediated natural tissue engineering

Author

Möllmann, H., primary, Nef, H.M., additional, Voss, S., additional, Troidl, C., additional, Willmer, M., additional, Szardien, S., additional, Rolf, A., additional, Klement, M., additional, Voswinckel, R., additional, Kostin, S., additional, Ghofrani, H.A., additional, Hamm, C.W., additional, and Elsässer, A., additional

Published
2009
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29. 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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30. 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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31. 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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32. 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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33. 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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34. 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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35. 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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38. On the Estimation of the Number of Persons Entering and Leaving Crime Annually.

Author

Willmer, M. A. P.

Subjects
CRIME, CRIMINALS, CRIMINAL law, JUSTICE, PERSONS, CRIMINOLOGY
Abstract

As time passes, some people start to commit crime for the first time while others drop out of crime. Despite the large amount of data relating to crime and criminals that is collected by official agencies each year, limited attention so far has been paid to such questions as: (1) how many persons actually started to commit crime in contrast to the number of "first offenders" recorded? (2) how many persons actually gave up crime in a given year compared with those who simply avoided arrest? This paper explores the possibility of developing a method of answers to such questions-a method which, if successfully developed, could lead to an improvement in our understanding of the criminal justice system. [ABSTRACT FROM AUTHOR]

Published
1971
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39. 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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40. 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.

41. 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.

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

Author

Willmer, M., Wiebelsooth, B., Westerhoff, S., Wahl, H., Stamm, W., Schmele, D., Sander, H., Sanchez, Ja, Samorski, M., Rhode, W., Prahl, J., Padilla, L., Muller, N., Moralejo, A., Moller, H., Mirzoyan, R., Meyer, H., Merck, M., Matheis, V., Martinez, S., Magnussen, N., Lorenz, E., Lindner, A., Kuhn, M., Krennrich, F., Krawczynski, H., Karle, A., Heinzelmann, G., Haustein, V., Gonzalez, Jc, Funk, B., Fonseca, V., Fernandez, P., Fernandez, J., Juan Cortina, Arqueros, F., Plaga, R., Feigl, E., and Prosch, C.

43. 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.

44. 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.

45. 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.

46. 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.

47. 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.

48. Measurement of the flux, spectrum, and variability of TeV gamma-rays from Mkn 501 during a state of high activity

Author

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

50. 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.

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