Talk detail

Participant	Neronov, Andrii
Institution	University of Geneva - Ch. d'Ecogia 16 - Versoix - - Switzerland

Session	NS4	Accepted	Yes	Order	5	Time	17:00	25' + 5'
Talk	Oral abstract	Title	High-energy emission from neutron stars
Coauthors
Abstract	I will review recent results on the high-energy activity of young and millisecond pulsars and of their associated pulsar wind nebulae. The accent will be on the evolutionary aspect of the observational properties of the pulsar population. Pulsars born with short rotation periods could store a significant fraction of the energy output of supernova explosion and play a potentially important role in the injection of mechanical energy into the interstellar medium through the pulsar winds and (possibly) cosmic rays. I will discuss constraints on the physical parameters and mechanisms of activity of the pulsar powered sources at different stages of their life imposed by the gamma-ray and multi-wavelength observations.
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Session	GL3	Accepted	Yes	Order	9	Time	17:50	20'
Talk	Oral abstract	Title	Test of relativistic gravity theory using microlensing of relativisticaly broadened lines in gravitationally lensed quasars
Coauthors	Vovk, Ievgen
Abstract	We show that observation of time-dependent effect of microlensing of relativisticly broadened emission lines (such as e.g. Fe Kalpha line in X-rays) in strongly lensed quasars could provide data on celestial mechanics of circular orbits in the direct vicinity of horizon of supermassive black holes. The data could be extracted from the measurement of evolution of the red / blue edge of the magnified line just before and just after the period of crossing of the innermost stable circular orbit by a microlensing caustic. The functional form of this evolution is insensitive to the numerous astrophysical parameters of the accreting black hole and the microlensing caustics network systems. Measurement of the time evolution of the red / blue edge could provide a precision measurement of the radial dependence of the gravitational redshift and of velocity of the circular orbits, down to the innermost stable circular orbit. These measurements could be used to discriminate between the General Relativity and the alternative models of relativistic gravity in which the dynamics of photons and massive bodies orbiting the gravitating centre is different from that of geodesics in the Schwarzschild or Kerr space-times.
Pdf file