The influence of small scale magnetic field on the heating of J0250+5854 polar cap

Abstract

The influence of surface small scale magnetic field on the heating of PSR J0250+5854 polar cap is considered. It is assumed that polar cap is heated only by reverse positrons, accelerated in pulsar diode. It is supposed that pulsar diode is in stationary state with lower plate nearby the star surface (polar cap model), occupies all pulsar tube crosssection and operates in regime of steady space charge limited electron flow. The influence of small scale magnetic field on electric field inside pulsar diode is taken into account. To calculate the electron-positron pairs production rate we take into account only the curvature radiation of primary electrons and its absorption in magnetic field. It is assumed that part of electro-positron pairs may be created in bound state (positronium). And later such positroniums are photoionized by thermal photons from star surface.

arXiv comment9 pages, 10 figures

References in corpus (15)

• The ATNF Pulsar Catalogue
• Pulsar Polar Cap Heating and Surface Thermal X-Ray Emission II. Inverse Compton Radiation Pair Fronts
• Radio Pulsar Death Line Revisited: Is PSR J2144-3933 Anomalous?
• Pulsar Polar Cap Heating and Surface Thermal X-Ray Emission I. Curvature Radiation Pair Fronts
• Pair Multiplicities and Pulsar Death
• LOFAR discovery of a 23.5-second radio pulsar
• PULSARS WITH STRONG MAGNETIC FIELDS: POLAR GAPS, BOUND PAIR CREATION AND NONTHERMAL LUMINOSITIES
• Regimes of Pulsar Pair Formation and Particle Energetics
• Vacuum gaps in pulsars and PSR J2144-3933
• Modelling of surface magnetic field in neutron stars: application to radio pulsars
• Pulsar Pair Cascades in a Distorted Magnetic Dipole Field
• Hubble Space Telescope non-detection of PSR J2144-3933: the coldest known neutron star
• Old but still warm: Far-UV detection of PSR B0950+08
• Orthogonal pulsars as a key test for pulsar evolution
• Rotational Evolution of The Slowest Radio Pulsar PSR J0250+5854