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CENTER FOR APPLIED MATHEMATICS AND THEORETICAL PHYSICS
UNIVERZA V MARIBORU UNIVERSITY OF MARIBOR
KREKOVA 2 SI-2000 MARIBOR SLOVENIA
Phone +(386) (2) 2355 350 and 2355 351 $\bullet$ Fax +(386) (2) 2355 360
Robnik@uni-mb.si $\bullet$ www.camtp.uni-mb.si
PROF.DR. MARKO ROBNIK, DIRECTOR

Seminarsko predavanje
Centra za uporabno matematiko in teoreticno fiziko

PHYSICS OF THE JET SOURCES

Professor Dr. Wolfgang Kundt
Institut für Astrophysik, Universität Bonn
Bonn, Germany

Abstract: Jet sources are ubiquitous in the sky, driven by (1) active galactic nuclei (AGN), by (2) (mostly binary) neutron stars, (3) (binary) forming white dwarfs, and by (4) (all?) newly forming stars (YSOs). Here I classify the BHCs as (binary) neutron stars surrounded by heavy accretion disks. The jets can be thinner than 1% in angle, sided, and expand superluminally. They never branch, blow cocoons, and can have several successive seeming heads. For all of them, my understanding of their formation is the generation of extremely relativistic electron-positron pair plasma in magnetospheric reconnect ions - like on the Sun - whose buoyant escape along the density gradient, viz. the spin axis, rams two antipodal channels through which susequent generations escape in the form of an ordered, mono-energetic E x B-drift. The Poynting flux, realized by the convected toroidal B-fields, and perpendicular (Hall) E-fields, carries half of the jet power. Whenever a beam hits an obstacle, this Poynting flux converts the mono-energetic particle distribution back into a hard power law, whose anisotropic radiation we observe, from radio frequencies to X-ray energies.

Seminarsko predavanje bo v sredo 7. aprila 2004 ob 15:15 uri v seminarski sobi CAMTP, Krekova 2, pritlicje desno. Vljudno vabljeni vsi zainteresirani, tudi študentje.

Prof.Dr. Marko Robnik
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