|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
27 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The Magnificent Seven: Close-by Cooling Neutron Stars? | | A. Treves
; S.B. Popov
; M. Colpi
; M.E. Prokhorov
; R. Turolla
; | | Date: |
30 Nov 2000 | | Subject: | astro-ph | | Affiliation: | Univ. of Como), S.B. Popov (SAI), M. Colpi (Univ. of Milan), M.E. Prokhorov (SAI) and R. Turolla (Univ. of Padova | | Abstract: | We model Galactic populations of accreting and cooling isolated neutron stars in the attempt to explore their link with a new class of dim soft X-ray sources revealed by ROSAT. For accretors we follow the magneto-rotational and dynamical evolution in the Galactic potential and a realistic large scale distribution of the interstellar medium is used. Under standard assumptions old neutron stars enter the accretor stage only if their magnetic field exceeds $approx 10^{11}$--$10^{12}$ G. We predict about 1 source per square degree for fluxes $approx 10^{-15}$--$10^{-16}$ erg cm$^{-2}$s$^{-1}$ in the energy range 0.5-2 keV. Cooling neutron stars are explored within a simpler model of local sources, including however interstellar absorption. They are found to be significantly less abundant at low fluxes, $<0.1$ sources per square degree, but dominate over accretors at higher flux levels ($approx 10^{-12}$--$10^{-11}$ erg cm$^{-2}$s$^{-1}$). We suggest that the faint sources observed by ROSAT may be young cooling neutron stars with typical age $la 10^6$ yrs, if the total number of young neutron stars in the Solar proximity is $sim 10$ times higher than inferred from radiopulsars statistics. | | Source: | arXiv, astro-ph/0011564 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER