The swallowing of a quark star by a black hole
نویسنده
چکیده
In 3-d SPH simulations of the coalescence of a quark star with a pseudo-Newtonian black hole all of the quark matter is quickly accreted by the black hole. The AlparMadsen-Caldwell-Friedman argument against the existence of quark stars may need to be re-examined.
منابع مشابه
Do Black Holes End up as Quark Stars ?
The possibility of the existence of quark stars has been discussed by several authors since 1970. Recently, it has been pointed out that two putative neutron stars, RXJ 1856.5-3754 in Corona Australis and 3C58 in Cassiopeia are too small and too dense to be neutron stars; they show evidence of being quark stars. Apart from these two objects, there are several other compact objects which fit nei...
متن کاملar X iv : a st ro - p h / 02 01 11 4 v 1 8 J an 2 00 2 Binary coalescence of a strange star with a black hole : Newtonian results .
We present Newtonian three–dimensional hydrodynamical simulations of the merger of quark stars with black holes. The initial conditions correspond to non-spinning stars in Keplerian orbits, the code includes gravitational radiation reaction in the quadrupole approximation for point masses. We find that the quark star is disrupted, forming transient accretion structures around the black hole, bu...
متن کاملCan a Black Hole Collapse to a Space-time Singularity?
A critique of the singularity theorems of Penrose, Hawking, and Geroch is given. It is pointed out that a gravitationally collapsing black hole acts as an ultrahigh energy particle accelerator that can accelerate particles to energies inconceivable in any terrestrial particle accelerator, and that when the energy E of the particles comprising matter in a black hole is ∼ 10GeV or more, or equiva...
متن کاملChromo-thermal Instabilities and Collapse of Quark Stars to Black Holes Astrophysical Implications
We have studied the effects of temperature on the properties of strange stars. We find that the maximum mass of the strange star decreases with the increase of temperature, because at high temperatures the equation of states become softer. Moreover, if the temperature of a strange star increases keeping its baryon number fixed, its gravitational mass increases and radius decreases which leads t...
متن کاملar X iv : a st ro - p h / 02 05 52 6 v 1 3 0 M ay 2 00 2 Possible Formation Scenario of the Quark Star of Maximum Mass around 0 . 7 M ⊙
If there exists the quark star of maximum mass ∼ 0.7M⊙ as suggested by recent Chandra observations, we show that the general relativistic collapse of a neutron star of mass greater than the maximum mass of the neutron star with angular momentum parameter q ≡ cJ/GM > 1 may lead to such a strange star. Here J and M are the angular momentum and the gravitational mass of the neutron star, respectiv...
متن کامل