A red giant with a strange star as its core. Principal similarities to and differences from Thorne-Zytkow objects.

Details A red giant with a strange star as its core. Principal similarities to and differences from Thorne-Zytkow objects. A red giant with a strange star as its core. Principal similarities to and differences from Thorne-Zytkow objects.

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ap.....41..349h&link_type=abstract

Astrophysics, Volume 41, Issue 4, pp.349-355

Astronomy and Astrophysics

Astrophysics

1

Red Giants: Strange Matter, Red Giants: Internal Structure, Red Giants: Lifetimes

Scientific paper

A model red giant with a mass of 5 M&sun; a luminosity of 41,740 L&sun;, and a radius of 960 R&sun; and with a strange quark star as its core is constructed, and it is compared with a Thorne-Zytkow object having similar integrated parameters. The difference in internal structure is manifested right at the dense core: matter above the core is held off only by γ rays from the strange star, and convection is maintained down to the strange star. The lifetime of a red giant containing a strange star turns out to be almost 500 times shorter than that of a Thorne-Zytkow object — on the order of 105 years.

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