SpringerLink
Forum Springer Astron. Astrophys.
Forum Whats New Search Orders


Astron. Astrophys. 361, 1073-1078 (2000)

Next Section Table of Contents

Optimizing the angular resolution of the HEGRA telescope system to study the emission region of VHE gamma rays in the Crab Nebula

F.A. Aharonian 1, A.G. Akhperjanian 7, J.A. Barrio 2,3, K. Bernlöhr 1, H. Bojahr 6, O. Bolz 1, H. Börst 5, J.L. Contreras 3, J. Cortina 3, S. DenninghoffV. Fonseca 2,3, J.C. Gonzalez 3, N. Götting 4, G. Heinzelmann 4, G. Hermann 1, A. Heusler 1, W. Hofmann 1, D. Horns 4, A. Ibarra 3, C. Iserlohe 6, I. Jung 1, R. Kankanyan 1, M. Kestel 2, J. Kettler 1, A. Kohnle 1, A. Konopelko 1, H. Kornmeyer 2, D. Kranich 2, H. Krawczynski 1, H. Lampeitl 1, E. Lorenz 2, F. Lucarelli 3, N. Magnussen 6, O. Mang 5, H. Meyer 6, R. Mirzoyan 2, A. Moralejo 3, L. Padilla 3, M. Panter 1, R. Plaga 2, A. Plyasheshnikov J. Prahl *  1,4, G. Pühlhofer 1, W. Rhode 6, A. Röhring 4, G. Rowell 1, V. Sahakian 7, M. Samorski 5, M. Schilling 5, F. Schröder 6, M. Siems 5, W. Stamm 5, M. Tluczykont 4, H.J. Völk 1, C. Wiedner 1 and W. Wittek 2

1 Max-Planck-Institut für Kernphysik, Postfach 103980, 69029 Heidelberg, Germany
2 Max-Planck-Institut für Physik, Föhringer Ring 6, 80805 München, Germany
3 Universidad Complutense, Facultad de Ciencias Fisicas, Ciudad Universitaria, 28040 Madrid, Spain
4 Universität Hamburg, II. Institut für Experimentalphysik, Luruper Chaussee 149, 22761 Hamburg, Germany
5 Universität Kiel, Institut für Experimentelle und Angewandte Physik, Leibnizstrasse 15-19, 24118 Kiel, Germany
6 Universität Wuppertal, Fachbereich Physik, Gaussstrasse 20, 42097 Wuppertal, Germany
7 Yerevan Physics Institute, Alikhanian Br. 2, 375036 Yerevan, Armenia

Received 4 February 2000 / Accepted 13 July 2000

Abstract

The HEGRA system of imaging atmospheric Cherenkov telescopes provides for specially selected classes of events an angular resolution of better than 3´. By comparing the measured angular distribution of TeV gamma rays from the Crab Nebula with the distribution expected on the basis of Monte Carlo simulations, and with measurements of gamma rays from the point source Mrk 501, we conclude that the rms size of the VHE gamma-ray emission region in the Crab Nebula is less than 1.5´.

Key words: gamma rays: observations – ISM: individual objects: Crab Nebula – ISM: supernova remnants

* On leave from Altai State University, Dimitrov Street 66, 656099 Barnaul, Russia

Send offprint requests to: W. Hofmann (Werner.Hofmann@mpi-hd.mpg.de)

SIMBAD Objects

Contents

Next Section Table of Contents

© European Southern Observatory (ESO) 2000

Online publication: October 10, 2000
helpdesk.link@springer.de