Sep 12 – 16, 2016
Europe/Zurich timezone
There is a live webcast for this event.

Constraining the production of cosmic rays by pulsars

Sep 12, 2016, 3:20 PM
40/S2-D01 - Salle Dirac (CERN)

40/S2-D01 - Salle Dirac


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Oral Contributions Cosmic rays Cosmic rays


Mikhail Ivanov (Ecole Polytechnique Federale de Lausanne (CH))


One of the possible sources of hadronic cosmic rays (CRs) are newborn pulsars. If it is indeed the case, they should feature diffusive gamma-ray halos produced by interactions of CRs with interstellar gas. In my talk I will report on the attempts to identify extended gamma-ray emission around young pulsars making use of the 7-year Fermi-LAT data.
I will describe the method and the selected set of 8 pulsars that are most likely to possess detectable gamma-ray halos.
I will present the only one found candidate which might be interpreted as a gamma-ray halo and discuss its properties.
Irrespectively of the nature of this source I will put bounds on the luminosity of gamma - ray halos which suggest that pulsars’ contribution to the overall energy budget of galactic CRs is subdominant in the GeV-TeV range.


I will discuss pulsars as potential sources of GeV-TeV cosmic rays and constraints on the related cosmic-ray fluxes derived from gamma-ray observations.

Primary author

Mikhail Ivanov (Ecole Polytechnique Federale de Lausanne (CH))


Grigory Rubtsov (INR RAS) Maxim Pshirkov (Moscow State University)

Presentation materials