Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986comap..11..151t&link_type=abstract
Comments on Modern Physics, Part C - Comments on Astrophysics (ISSN 0146-2970), vol. 11, July 1986, p. 151-192.
Astronomy and Astrophysics
Astrophysics
48
Cooling, Neutron Stars, Stellar Evolution, Stellar Spectrophotometry, Stellar Temperature, Conductive Heat Transfer, Pulsars, Stellar Models
Scientific paper
Observational data, primarily obtained with the Einstein Observatory (EO), and theoretical work are reviewed to assess the current level of understanding of the cooling of neutron stars. The recently introduced concept of a finite time scale for thermal conditions constrains the time required for stars to reach an isothermal state. The time requirement is a strong test of various theoretical models. It has also been found that magnetic fields play an insignificant role for thermal conductivity. Newly-determined opacities have caused the calculation of lower estimates for the ages of neutron stars. EO data on the supernova remnant RCW 103 are cited as an example of how the new theories suggest that direct radiation from the surface of a neutron star can be detected, as well as ruling out the presence of neutron stars in Cas A, Tycho and SN 1006.
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