Critical phenomena in head-on collisions of neutron stars

We find type I critical collapses of compact objects modeled by a polytropic equation of state (EOS) with a polytropic index Gamma=2 without the ultrarelativistic assumption. The object is formed in head-on collisions of neutron stars. Further, we show that the critical collapse can occur due to a c...

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Published in:Physical review letters 2007-03, Vol.98 (13), p.131101-131101, Article 131101
Main Authors: Jin, Ke-Jian, Suen, Wai-Mo
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Language:English
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container_title Physical review letters
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creator Jin, Ke-Jian
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description We find type I critical collapses of compact objects modeled by a polytropic equation of state (EOS) with a polytropic index Gamma=2 without the ultrarelativistic assumption. The object is formed in head-on collisions of neutron stars. Further, we show that the critical collapse can occur due to a change of the EOS, without fine-tuning of initial data. This opens the possibility that a neutron-star-like compact object, not just those formed in a collision, may undergo a critical collapse in processes which slowly change the EOS, such as cooling.
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title Critical phenomena in head-on collisions of neutron stars
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