Astron. Astrophys. Suppl. Ser.
Volume 138, Number 3, September 1999Gamma-Ray Bursts in the Afterglow Era Contents Rome, November 3-6, 1998
|Page(s)||503 - 504|
|Published online||15 September 1999|
Explaining the light curves of gamma-ray bursts with a precessing jet
Boston University, Department of Astronomy 725 Commonwealth Avenue, Boston, Massachusetts 02215, U.S.A.
2 Department of Information Science and Graphics, College of Arts and Science, University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153, Japan
3 Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, NY 11794, U.S.A.
4 Department of Physics, Hanyang University, Seoul 133-791, Korea
Send offprint request to: S.F. Portegies Zwart
Accepted: 17 March 1999
A phenomenological model is presented to explain the light curves of gamma-ray bursts. Gamma-rays are produced in a narrow beam which sweeps through space due to the precession of a slaved accretion disc. The light curve expected from such a precessing luminosity cone can explain the complex temporal behavior of bright gamma-ray bursts.
Key words: accretion discs / black hole physics / binaries: close / stars: neutron / gamma-rays: bursts / gamma-rays: theory
© European Southern Observatory (ESO), 1999