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A Limit on the Number of Isolated Neutron Stars Detected in the ROSAT All-Sky-Survey Bright Source Catalog

Turner, Monica L ; Rutledge, Robert E ; Letcavage, Ryan ; Shevchuk, Andrew S. H ; Fox, Derek B

The Astrophysical journal, 2010-05, Vol.714 (2), p.1424-1440 [Periódico revisado por pares]

Bristol: IOP Publishing

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Título:
A Limit on the Number of Isolated Neutron Stars Detected in the ROSAT All-Sky-Survey Bright Source Catalog
Autor: Turner, Monica L ; Rutledge, Robert E ; Letcavage, Ryan ; Shevchuk, Andrew S. H ; Fox, Derek B
Assuntos: Astronomy ; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; BARYONS ; COSMIC RAY SOURCES ; COSMIC X-RAY SOURCES ; DOCUMENT TYPES ; Earth, ocean, space ; ELECTROMAGNETIC RADIATION ; ELEMENTARY PARTICLES ; Exact sciences and technology ; FERMIONS ; HADRONS ; IONIZING RADIATIONS ; MATHEMATICAL MODELS ; NEUTRON STARS ; NEUTRONS ; NUCLEONS ; RADIATIONS ; SATELLITES ; SPECTRA ; STAR MODELS ; STARS ; X RADIATION ; X-RAY SPECTRA
É parte de: The Astrophysical journal, 2010-05, Vol.714 (2), p.1424-1440
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Using new and archival observations made with the Swift satellite and other facilities, we examine 147 X-ray sources selected from the ROSAT All-Sky-Survey Bright Source Catalog (RASS/BSC) to produce a new limit on the number of isolated neutron stars (INSs) in the RASS/BSC, the most constraining such limit to date. Independent of X-ray spectrum and variability, the number of INSs is {<=}48 (90% confidence). Restricting attention to soft (kT{sub eff} < 200 eV), non-variable X-ray sources-as in a previous study-yields an all-sky limit of {<=}31 INSs. In the course of our analysis, we identify five new high-quality INS candidates for targeted follow-up observations. A future all-sky X-ray survey with eROSITA, or another mission with similar capabilities, can be expected to increase the detected population of X-ray-discovered INSs from the 8-50 in the BSC, to (for a disk population) 240-1500, which will enable a more detailed study of neutron star population models.
Editor: Bristol: IOP Publishing
Idioma: Inglês

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A Limit on the Number of Isolated Neutron Stars Detected in the ROSAT All-Sky-Survey Bright Source Catalog

Turner, Monica L ; Rutledge, Robert E ; Letcavage, Ryan ; Shevchuk, Andrew S. H ; Fox, Derek B

Bristol: IOP Publishing

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