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Extrasolar: Stars:
Black Widow Pulsar and Companion

Summary:Pulsar System PSR B1957+20 (i.e QX Sge) nicknamed the "Black Widow".
Description:his is the pulsar system PSR B1957+20 (i.e QX Sge) nicknamed the "Black Widow". The neutron star is known to host a very low-mass companion with no more than 0.022 Solar masses (i.e roughly 22 Jupiter masses) that is not a low-mass shrunken white dwarf of 25 Jupiter masses but quite a brown dwarf with very "bloated" radius (up to 3 Jupiter radii, or 0.3 Solar radii). As stated by Reynolds et al. (2007).
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Creator:Edasich
Version:1.0
License:© 2010 Edasich
Added:2010-04-20 22:32
Last modified:2011-10-10 11:36
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Black Widow Pulsar and Companion SSC/STC/JPG/PNG 251.54 kB

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