Zobrazeno 1 - 10
of 312
pro vyhledávání: '"Drenkhahn, G."'
Autor:
Spruit, H. C., Drenkhahn, G.
The physics of GRB powered by a magnetic energy flux is reviewed. Magnetic fields are natural for transmitting the energy from the central compact object to the small amount of baryons required for a GRB. When dissipation of the flux of magnetic ener
Externí odkaz:
http://arxiv.org/abs/astro-ph/0302468
Autor:
Drenkhahn, G., Spruit, H. C.
We investigate the effects of magnetic energy release by local magnetic dissipation processes in Poynting flux-powered GRBs. For typical GRB parameters (energy and baryon loading) the dissipation takes place mainly outside the photosphere, producing
Externí odkaz:
http://arxiv.org/abs/astro-ph/0202387
Autor:
Daigne, F., Drenkhahn, G.
Publikováno v:
A&A 381,1066 (2002)
We derive a new formulation of the fully general relativistic equations describing a stationary equatorial MHD outflow from a rotating central object. The wind solution appears as a level contour of a `Bernoulli' function fixed by the requirements th
Externí odkaz:
http://arxiv.org/abs/astro-ph/0111236
We present a distance to NGC 4527, the host galaxy of the type Ia SN 1991T, measured by surface brightness fluctuations. This supernova has been labelled ``peculiar'' both on the grounds of its spectroscopic behaviour and its apparent overluminosity
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011440
Publikováno v:
A&A 369,694 (2001)
We consider possible geometries of magnetic fields in GRB outflows, and their evolution with distance from the source. For magnetically driven outflows, with an assumed ratio of magnetic to kinetic energy density of order unity, the field strengths a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0004274
Autor:
Drenkhahn, G., Drenkhahn, G.
Publikováno v:
Astronomy and Astrophysics; May 2002, Vol. 387 Issue: 2 p714-724, 11p
Publikováno v:
Astronomy and Astrophysics; January 2002, Vol. 381 Issue: 3 p1066-1079, 14p
Autor:
Gómez, M., Richtler, T., Infante, L., Drenkhahn, G., Gómez, M., Richtler, T., Infante, L., Drenkhahn, G.
Publikováno v:
Astronomy and Astrophysics; June 2001, Vol. 371 Issue: 3 p875-889, 15p
Publikováno v:
Astronomy and Astrophysics; April 2001, Vol. 369 Issue: 2 p694-705, 12p