July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Cosmic ray streaming instability generated in the intergalactic medium

Aug 5, 2015, 12:00 PM
15m
Yangtze 2 (World Forum)

Yangtze 2

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution CR-TH Parallel CR20 TH accel

Speaker

Ms Marta D'Angelo (GSSI-INFN)

Description

We solve the Vlasov equation describing the escape of cosmic rays (CRs) from a point source, in the case when the Larmor radius is smaller than the coherence scale of the cosmological magnetic field in which CRs are propagating, right after leaving the source. The electric current that follows from this calculation is used to calculate the growth rate of a non-resonant instability. We study the effect of such instability on CR propagation and we compare the growth rate with typical time scales relevant for the source, as the lifetime. We find that particles with energies less than a critical value (which depends on CR luminosity and distance from the source) are self-confined. We also discuss the development of this instability as due to a current of CRs associated with the anisotropy in the distribution of their sources in the intergalactic medium.
Collaboration -- not specified --
Registration number following "ICRC2015-I/" 701

Primary author

Ms Marta D'Angelo (GSSI-INFN)

Co-authors

Dr Elena Amato (INAF-Osservatorio Astrofisico di Arcetri) Prof. Pasquale Blasi (INAF/Osservatorio Astrofisico di Arcetri & GSSI-INFN)

Presentation materials

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