Constraining a possible time-variation of the gravitational constant through "gravitochemical heating" of neutron stars

Details Constraining a possible time-variation of the gravitational constant through "gravitochemical heating" of neutron stars Constraining a possible time-variation of the gravitational constant through "gravitochemical heating" of neutron stars

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hia....15..314r&link_type=abstract

Highlights of Astronomy, Volume 15, p. 314-314

Astronomy and Astrophysics

Astronomy

1

Stars: Neutron, Dense Matter, Gravitation, Relativity, Pulsars: General, Pulsars: Individual (Psr J0437-4715), Ultraviolet: Stars

Scientific paper

A hypothetical time-variation of the gravitational constant G would produce gravitochemical heating of old (≳ 107-8 yr) neutron stars. It could produce detectable thermal ultraviolet emission from such stars for changes as small as |Ġ/G|~ 10-12 yr-1, comparable to the best existing upper limits from other methods.

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