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Is GRO J1744-28 a Strange Star? | | K.S. Cheng
; Z.G. Dai D.M. Wei T. Lu(Department of Astronomy
; Nanjing University; CCAST
; | | Date: |
2 Jun 1998 | | Journal: | Science 280 (1998) 407 | | Subject: | astro-ph hep-ph nucl-th | | Affiliation: | Department of Physics, University of Hong Kong,China), Z.G. Dai(Department of Astronomy, Nanjing University,China) D.M. Wei(Purple Mountain Observatory, Nanjing, China) T. Lu(Department of Astronomy, Nanjing University; CCAST (World Laboratory), Beijin | | Abstract: | 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. | | Source: | arXiv, astro-ph/9806024 | | Services: | Forum | Review | PDF | Favorites | |
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