This is a bi-lingual blog of the members of the ADAMIS team at Laboratoire APC and invited guests. We comment on selected papers and events exploring, or relevant to, the interface between physics, cosmology, applied math, statistics, and numerical algorithms and which we have found interesting.

The opinions expressed in this blog reflect those of their authors and neither that of the ADAMIS group as a whole nor of Laboratoire APC.

Friday, October 29, 2010

Super massive neutron star rules out hyperon or boson condensate equations of state

An evidence in favour of Neutron Stars being more conventional objects than expected (by some theorists).
Apparently, some radio timing observations of the binary millisecond pulsar J1614-2230, that show a strong Shapiro delay signature, constrain an estimate of the pulsar mass to be (1.97 ± 0.04)M⊙.
Most equation of state involving exotic matter, such as kaon condensates or hyperons, tend to predict maximum masses well below 2.0M⊙ and are therefore ruled out.

http://www.nature.com/nature/journal/v467/n7319/full/nature09466.html
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