15–20 Oct 2017
Congress Center Garmisch-Partenkirchen
Europe/Berlin timezone
The proceedings of the 7th Fermi Symposium are available at https://pos.sissa.it/312/

Multiwavelength modeling of the Vela pulsar pulses - from Optical light to VHE gamma-rays

Not scheduled
15m
GaPa/2-1 - Konzertsaal (Garmisch-Partenkirchen)

GaPa/2-1 - Konzertsaal

Garmisch-Partenkirchen

300
Poster Pulsars Pulsars

Speaker

Bronislaw Rudak (Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences)

Description

The pulsed radiation from PSR B0833-45 (Vela) has a phased-averaged spectral
energy distribution of an apparently simple structure across a wide energy range.
However, in narrow energy bands the pulses reveal astonishing complexity of
the directional pattern of the radiation. We present the results of a 3D modeling
of the Vela radiation properties in the outer-gap scenario.
We show how the synchrotron emission as well as the inverse Compton scattering (ICS)
of soft photons by secondary e$^\pm$-pairs in its magnetic and non-magnetic
regimes reproduces qualitatively, and in some cases quantitatively, the observed
energy-dependent pulses of Vela.
Moreover, we present how ICS of soft synchrotron photons by primary particles can
form a pulsed spectral component in the VHE domain. The flux of this component
should be of interest to the Cherenkov Telescope Array.

Primary author

Bronislaw Rudak (Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences)

Presentation materials

Peer reviewing

Paper