scholarly journals Neutron stars: New constraints on asymmetric dark matter

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
O. Ivanytskyi ◽  
V. Sagun ◽  
I. Lopes
Author(s):  
Andrea Maselli ◽  
Chris Kouvaris ◽  
Kostas D. Kokkotas

Asymmetric Dark Stars, i.e. compact objects formed from the collapse of asymmetric dark matter could potentially produce a detectable photon flux if dark matter particles self-interact via dark photons that kinetically mix with ordinary photons. The morphology of the emitted spectrum is significantly different and therefore distinguishable from a typical black-body one. Given the above and the fact that asymmetric dark stars can have masses outside the range of neutron stars, the detection of such a spectrum can be considered as a smoking gun signature for the existence of these exotic stars.


2021 ◽  
Vol 32 ◽  
pp. 100796
Author(s):  
Raul Ciancarella ◽  
Francesco Pannarale ◽  
Andrea Addazi ◽  
Antonino Marcianò
Keyword(s):  

2015 ◽  
Vol 115 (12) ◽  
Author(s):  
Isabel García García ◽  
Robert Lasenby ◽  
John March-Russell

2013 ◽  
Vol 2013 (08) ◽  
pp. 003-003 ◽  
Author(s):  
Graciela B Gelmini ◽  
Ji-Haeng Huh ◽  
Thomas Rehagen

2020 ◽  
Vol 29 (14) ◽  
pp. 2043028
Author(s):  
M. Ángeles Pérez-García ◽  
Joseph Silk

Neutron Stars (NSs) are compact stellar objects that are stable solutions in General Relativity. Their internal structure is usually described using an equation of state that involves the presence of ordinary matter and its interactions. However there is now a large consensus that an elusive sector of matter in the universe, described as dark matter, remains as yet undiscovered. In such a case, NSs should contain both, baryonic and dark matter. We argue that depending on the nature of the dark matter and in certain circumstances, the two matter components would form a mixture inside NSs that could trigger further changes, some of them observable. The very existence of NSs constrains the nature and interactions of dark matter in the universe.


2015 ◽  
Vol 92 (6) ◽  
Author(s):  
Chris Kouvaris ◽  
Niklas Grønlund Nielsen

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