Gamma-ray spectra of the Crab, Vela and Geminga pulsars fitted with SED of the emission from their current sheet

Abstract

We show that the spectral energy distribution (SED) of the tightly focused radiation generated by the superluminally moving current sheet in the magnetosphere of a non-aligned neutron star fits the gamma-ray spectra of the Crab, Vela and Geminga pulsars over the entire range of photon energies so far detected by Fermi-LAT, MAGIC and HESS from them: over $10^2$ MeV to $20$ TeV. While emblematic of any emission that entails caustics, the SED introduced here radically differs from those of the disparate emission mechanisms currently invoked in the literature to fit the data in different sections of these spectra. We specify, moreover, the connection between the values of the fit parameters for the analysed spectra and the physical characteristics of the central neutron stars of the Crab, Vela and Geminga pulsars and their magnetospheres.

arXiv comment13 pages, 5 figures. arXiv admin note: text overlap with arXiv:2211.14901

References in corpus (18)

• The ATNF Pulsar Catalogue
• Time-dependent force-free pulsar magnetospheres: axisymmetric and oblique rotators
• The Second Fermi Large Area Telescope Catalog of Gamma-ray Pulsars
• Fermi Large Area Telescope Observations of the Crab Pulsar and Nebula
• Teraelectronvolt pulsed emission from the Crab pulsar detected by MAGIC
• Observations of the Crab pulsar between 25 GeV and 100 GeV with the MAGIC I telescope
• Three-dimensional Analytical Description of Magnetised Winds from Oblique Pulsars
• The Extended Pulsar Magnetosphere
• Pulsar radio emission mechanisms: a critique
• Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV
• Discovery of a Radiation Component from the Vela Pulsar Reaching 20 Teraelectronvolts
• Radiation by the superluminally moving current sheet in the magnetosphere of a neutron star
• The electromagnetic radiation whose decay violates the inverse-square law: detailed mathematical treatment of an experimentally realized example
• Energetic requirements of the gamma-ray emission from pulsars: A nonparametric analysis of the data in the Fermi-LAT 12-Year Catalog
• The Crab pulsar at VHE
• Radio spectra of pulsars fitted with the spectral distribution function of the emission from their current sheet
• A heuristic account of the radiation by the superluminally moving current sheet in the magnetosphere of a neutron star
• Congruity of the Crab pulsar's gamma-ray spectrum with the spectral distribution of tightly focused caustics

Cited by in corpus (2)

• An alternative interpretation of magnetars' traits deduced from the observational data on their outburst fluxes and spectra
• Evolution of Crab Pulsar: Magnetic Inclination Angle and Spin