ICRC2015

Session

Parallel GA06 TH

31 Jul 2015, 11:00

World Forum

1304. A Radiation Transfer Model for the UV-submm Radiation Fields in the Milky Way: Application to High Energy Astrophysics

Dr Richard Tuffs (Max-Planck-Institut fuer Kernphysik)

31/07/2015, 11:00

GA-TH

Oral contribution

We present a solution for the interstellar radiation fields (ISRF) in the Milky Way from UV to submm wavelengths based on axisymmetric radiation transfer modelling of the panchromatic SED of the galaxy in direct and dust-reradiated starlight as constrained by all-sky imaging by the IRAS, COBE and Planck satellites. This is the first self-consistent model of the spatial and spectral...

752. Using GBM As Alert For A Galactic Type Ia Supernova

Ms Xilu Wang (University of Illinois at Urbana and Champaign)

31/07/2015, 11:15

GA-TH

Oral contribution

A Galactic type Ia supernova(SN Ia) event would go entirely unnoticed to us due to the large optical extinction in the Milky Way plane, the weak neutrinos signal from a SN Ia, as well as the dim soft X-rays signal. But the recent SN2014J confirms that SN Ia emit gamma-ray lines, which lasts for weeks, from the 56Ni → 56Co → 56Fe decay. The lines span from 158 keV to 2.6 MeV, which occur just...

1144. Are gamma rays produced in the core region of microquasars and AGNs?

Behrouz Khiali (University of São Paulo)

31/07/2015, 11:30

GA-TH

Oral contribution

Cosmic Ray (CR) acceleration is still challenging in high energy astrophysics. A first-order Fermi mechanism within magnetic reconnection layers has been demonstrated to be a powerful CR accelerator in recent studies. In this work we have investigated this acceleration process in the nuclear region of radio-galaxies and microquasars and found that the very high energy (VHE) emission from these...

1215. The Role of Fast Magnetic Reconnection on the Radio and Gamma-Ray Emission from the Nuclear Regions of Microquasars and Low Luminosity AGNs

Luís H. S. Kadowaki (University of Sao Paulo (IAG-USP))

31/07/2015, 11:45

GA-TH

Oral contribution

Fast magnetic reconnection events can be a very powerful mechanism operating in the core region of microquasars and active galactic nuclei (AGNs). In earlier work, it has been suggested that the power released by fast reconnection events between the magnetic field lines lifting from the inner accretion disk region and the lines anchored into the central black hole (BH) could accelerate...

24. Non-thermal radiation from interaction of compact objects with a jet in Cen A

Prof. Wlodek Bednarek (University of Lodz)

31/07/2015, 12:00

GA-TH

Oral contribution

The central engines in active galaxies are immersed in huge central stellar clusters and also surrounded by spherical halos with radii of a few tens of kpc containing from a few hundred up to several tausend globular clusters. We investigate the acceleration of particles on the shocks formed in collisions of different compact objects at the kpc distances with jet plasma. We show that...

269. Very High Energy Emission from Gamma-Ray Bursts

Prof. Soebur Razzaque (University of Johannesburg)

31/07/2015, 12:15

GA-TH

Oral contribution

Gamma-ray bursts (GRBs), the most powerful sources of gamma rays in the universe, have been detected at energies up to 95 GeV. This energy is at the verge of what is known as the Very High Energy (VHE, above 100 GeV) emission regime. VHE sources are targets for currently running and upcoming ground-based Cherenkov telescopes. It is therefore very important to understand the VHE emission...