Explanation: How massive can a star get without imploding into a black hole? These limits are being tested by the discovery of a lone neutron star in space. Observations by the Hubble Space Telescope have been combined with previous observations by the X-ray ROSAT observatory and ultraviolet EUVE observatory for the isolated star at the location of the arrow. Astronomers are able to directly infer the star's size from measurements of its unblended brightness, temperature, and an upper limit on the distance. Assuming that the object is a neutron star of typical mass, some previous theories of neutron star structure would have predicted an implosion that would have created a black hole. That this neutron star even exists therefore allows a window to the extreme conditions that exist in the interiors of neutron stars.

<<  Noyabr'  >> Pn Vt Sr Cht Pt Sb Vs             1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30             1995   1996   1997 1998   1999   2000 2001   2002   2003 2004   2005   2006 2007   2008   2009 2010   2011   2012 2013   2014   2015 2016   2017   2018 2019   2020   2021 2022   2023   2024

Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr'

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: black hole - neutron star - neitronnye zvezdy - neitronnoe veshestvo - chernye dyry Publikacii so slovami: black hole - neutron star - neitronnye zvezdy - neitronnoe veshestvo - chernye dyry
Sm. takzhe: Puteshestvie k centru Galaktiki Porfirion: samyi dlinnyi dzhet ot chernoi dyry Tumannost' Tyul'pan i chernaya dyra Lebed' X-1 Chernaya dyra razrushaet zvezdu: animaciya Sliyanie dvuh chernyh dyr: modelirovanie Galaktika, dzhet i znamenitaya chernaya dyra Akkrecionnyi disk chernoi dyry: vizualizaciya Vse publikacii na tu zhe temu >>