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Some aspects of the cooling of neutron stars

Hovik Grigorian

Yerevan State University

Abstrakt: Measurements of the low masses for the pulsar PSR J0737-3039B, and of the high masses for the pulsars PSR J1614-2230 and PSR J0348-0432 demonstrate the existence of compact stars with masses in a broad range from 1.2 to 2 Msun.  We show that for realistic stellar matter EoS it is possible to explain the whole set of cooling data within "nuclear medium cooling" scenario for compact stars by a variation of the star masses. Using the set of existing observational temperature-age data for neutron stars one can also extract their possible mass distribution from the cooling model. Such analyses performed for a particular EoS - DD2 model show that indeed the interval of masses from 1.2 to 2 Msun should be equally populated.

Seminář se koná v úterý 19. listopadu ve 14:00
v zasedací místnosti ÚTEF ČVUT, Praha 1, Husova 240/5.

Ing. Bartoloměj Biskup, Ph.D.
tajemník semináře
doc. Ing. Ivan Štekl, CSc.
ředitel ÚTEF
doc. Dr. André Sopczak
předseda NPS, ČS IEEE

IEEE logoNUCLEAR & PLASMA SCIENCES SOCIETY CHAPTER
IEEE Czechoslovakia section
http://www.ieee.cz/en/nps

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