Magnetars and the highly magnetized, fast, very massive, strange white dwarfs puls...
| Full text | |
| 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 ánd The highly magnetized, fast, very massive, strange white dwarfs pulsars, ánd The generation of gravitational waves |
| Grantee: | Jaziel Goulart Coelho |
| Support type: | Scholarships in Brazil - Post-Doctorate |