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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Thermal X-ray emission from massive, fast rotating, highly magnetized white dwarfs

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Author(s):
Caceres, D. L. ; de Carvalho, S. M. ; Coelho, J. G. ; de Lima, R. C. R. ; Rueda, Jorge A.
Total Authors: 5
Document type: Journal article
Source: Monthly Notices of the Royal Astronomical Society; v. 465, n. 4, p. 4434-4440, MAR 2017.
Web of Science Citations: 4
Abstract

There is solid observational evidence on the existence of massive, M similar to 1M(circle dot), highly magnetized white dwarfs (WDs) with surface magnetic fields up to B similar to 10(9) G. We show that, if in addition to these features, the star is fast rotating, it can become a rotation-powered pulsar-like WD and emit detectable high-energy radiation. We infer the values of the structure parameters (mass, radius, moment of inertia), magnetic field, rotation period and spin-down rates of a WD pulsar death-line. We show that WDs above the death-line emit blackbody radiation in the soft X-ray band via the magnetic polar cap heating by back flowing pair-created particle bombardment and discuss as an example the X-ray emission of soft gamma-repeaters and anomalous X-ray pulsars within the WD model. (AU)

FAPESP's process: 13/26258-4 - Superdense matter in the universe
Grantee:Manuel Máximo Bastos Malheiro de Oliveira
Support type: Research Projects - Thematic Grants
FAPESP's process: 13/15088-0 - Magnetars and the highly magnetized, fast, very massive, strange white dwarfs pulsars, and the generation of gravitational waves
Grantee:Jaziel Goulart Coelho
Support type: Scholarships in Brazil - Post-Doctorate