HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Electrodynamics and radiation from rotating neutron star magnetospheres

Abstract : Neutron stars are compact objects rotating at high speed, up to a substantial fraction of the speed of light (up to 20% for millisecond pulsars) and possessing ultra-strong electromagnetic fields (close to and sometimes above the quantum critical field of 4.4 × 10 9 T ). Moreover, due to copious e ± pair creation within the magnetosphere, the relativistic plasma surrounding the star is forced into corotation up to the light cylinder where the corotation speed reaches the speed of light. The neutron star electromagnetic activity is powered by its rotation which becomes relativistic in the neighborhood of this light cylinder. These objects naturally induce relativistic rotation on macroscopic scales about several thousands of kilometers, a crucial ingredient to trigger the central engine as observed on Earth. In this paper, we elucidate some of the salient features of this corotating plasma subject to efficient particle acceleration and radiation, emphasizing several problems and limitations concerning current theories of neutron star magnetospheres. Relativistic rotation in these systems is indirectly probed by the radiation produced within the magnetosphere. Depending on the underlying assumptions about particle motion and radiation mechanisms, different signatures on their light curves, spectra, pulse profiles and polarization angles are expected in their broadband electromagnetic emission. We show that these measurements put stringent constraints on the way to describe particle electrodynamics in a rotating neutron star magnetosphere.
Document type :
Journal articles
Complete list of metadata

Contributor : Inspire Hep Connect in order to contact the contributor
Submitted on : Wednesday, November 18, 2020 - 11:05:40 PM
Last modification on : Wednesday, November 3, 2021 - 5:29:33 AM
Long-term archiving on: : Friday, February 19, 2021 - 8:59:01 PM


Publication funded by an institution




Jérôme Pétri. Electrodynamics and radiation from rotating neutron star magnetospheres. Universe, 2020, 6 (1), pp.15. ⟨10.3390/universe6010015⟩. ⟨hal-02467274⟩



Record views


Files downloads