Is GRO J1744-28 a Strange Star?

Details Is GRO J1744-28 a Strange Star? Is GRO J1744-28 a Strange Star?

1998-06-02

arxiv.org/abs/astro-ph/9806024v1

Science280:407,1998

Astronomy and Astrophysics

Astrophysics

Latex, has been published in SCIENCE, Vol. 280, 407

Scientific paper

10.1126/science.280.5362.407

The unusal hard x-ray burster GRO J1744-28 recently discovered by the Compton Gamma-ray Observatory (GRO) can be modeled as a strange star with a dipolar magnetic field $\le 10^{11} $Gauss. When the accreted mass of the star exceeds some critical mass, its crust may break, resulting in conversion of the accreted matter into strange matter and release of energy. Subsequently, a fireball may form and expand relativistically outward. The expanding fireball may interact with the surrounding interstellar medium, causing its kinetic energy to be radiated in shock waves, producing a burst of x-ray radiation. The burst energy, duration, interval and spectrum derived from such a model are consistent with the observations of GRO J1744-28.

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