摘要We investigate the dynamical behavior of phantom energy near a stringy magnetically charged black hole. For this purpose, we derive equations of motion for steady-state spherically symmetric flow of phantom energy onto the stringy magnetically charged black hole. It is found that phantom energy accreting onto a black hole decreases its mass. Further, the location of the critical points of accretion is explored, which yields a mass to charge ratio. This ratio implies that accretion process cannot transform a black hole into an extremal black hole or a naked singularity, hence cosmic censorship hypothesis remains valid here.
Abstract：We investigate the dynamical behavior of phantom energy near a stringy magnetically charged black hole. For this purpose, we derive equations of motion for steady-state spherically symmetric flow of phantom energy onto the stringy magnetically charged black hole. It is found that phantom energy accreting onto a black hole decreases its mass. Further, the location of the critical points of accretion is explored, which yields a mass to charge ratio. This ratio implies that accretion process cannot transform a black hole into an extremal black hole or a naked singularity, hence cosmic censorship hypothesis remains valid here.
M. Sharif**;G. Abbas. Phantom Energy Accretion by a Stringy Charged Black Hole[J]. 中国物理快报, 2012, 29(1): 10401-010401.
M. Sharif**, G. Abbas. Phantom Energy Accretion by a Stringy Charged Black Hole. Chin. Phys. Lett., 2012, 29(1): 10401-010401.
[1] Perlmutter S et al 1997 Astrophys. J. 483 565 [2] Perlmutter S et al 1998 Nature 391 51 [3] Perlmutter S et al 1999 Astrophys. J. 517 565 [4] Riess A G et al 1998 Astron. J. 116 1009 [5] Cai R and Wang A 2005 J. Cosmol. Astropart. Phys. 03 002 [6] Bennett C L et al 2003 Astrophys. J. Suppl. 148 1 [7] Frieman J A et al 1995 Phys. Rev. Lett. 75 2077 [8] Coble K, Dodelson S and Frieman J A 1997 Phys. Rev. D 55 1851 [9] Hinshaw G et al 2009 Astrophys. J. Suppl. 180 225 [10] Saridakis E N 2009 Phys. Lett. B 676 7 [11] Saridakis E N 2009 Nucl. Phys. B 819 116 [12] Leon G and Saridakis E N 2010 Phys. Lett. B 693 1 [13] Bondi H 1952 Mon. Not. Roy. Astron. Soc. 112 195 [14] Michel F C 1972 Astrophys. Space Sci. 15 153 [15] Sun C Y 2008 Phys. Rev. D 78 064060 [16] Babichev E, Dokuchaev V and Eroshenko Y 2004 Phys. Rev. Lett. 93 021102 [17] Jamil M, Rashid M and Qadir A 2008 Eur. Phys. J. C 58 325 [18] Babichev E, Dokuchaev V and Eroshenko Y 2011 J. Exp. Theor. Phys. 112 784 [19] Sharif M and Abbas G 2011 Mod. Phys. Lett. A 26 1731 [20] Sharif M and Abbas G 2011 Chin. Phys. Lett. 28 090402 [21] Kar S 1997 Phys. Rev. D 55 4872 [22] Dasgupta A, Nandan A and Kar S 2009 Phys. Rev. D 79 124004 [23] Sharif M 2011 Romanian J. Phys. 56 1035[24] Sharif M and Waheed S 2010 Can. J. Phys. 88 833 [25] Radinschi I and Ciobanu B 2007 AIP Conf. Proc. 895 329 [26] Garfinkle D, Horowitz G T and Strominger A 1991 Phys. Rev. D 43 3140
2012, Vol. 29 
