Nuclear correlations and neutrino emissivity from the neutron branch of the modified Urca process

2016 ◽  
Vol 93 (4) ◽  
Author(s):  
A. Dehghan Niri ◽  
H. R. Moshfegh ◽  
P. Haensel
Keyword(s):  
Neutrino Emissivity ◽  
Urca Process

Neutrino emissivity of the nucleon direct URCA process for rotational traditional and hyperonic neutron stars

2017 ◽  
Vol 41 (7) ◽  
pp. 075101 ◽  
Author(s):  
Nai-Bo Zhang ◽  
Shou-Yu Wang ◽  
Bin Qi ◽  
Jian-Hua Gao ◽  
Bao-Yuan Sun
Keyword(s):  
Neutron Stars ◽  
Neutrino Emissivity ◽  
Urca Process

scholarly journals Generalized two-point tree-level amplitude j f → j′ f′ in a magnetized medium

2015 ◽  
Vol 30 (11) ◽  
pp. 1550049 ◽  
Author(s):  
A. V. Kuznetsov ◽  
D. A. Rumyantsev ◽  
D. M. Shlenev
Keyword(s):  
Magnetic Field ◽  
Axial Vector ◽  
Field Operator ◽  
Coherent Scattering ◽  
Tree Level ◽  
Tree Level Amplitude ◽  
Photoproduction Process ◽  
Arbitrary Strength ◽  
Neutrino Emissivity ◽  
A Current

The tree-level two-point amplitudes for the transitions j f → j′ f′, where f is a fermion and j is a generalized current, in a constant uniform magnetic field of an arbitrary strength and in charged fermion plasma, for the j f f interaction vertices of the scalar, pseudoscalar, vector and axial-vector types have been calculated. The generalized current j could mean the field operator of a boson, or a current consisting of fermions, e.g. the neutrino current. The particular cases of a very strong magnetic field, and of the coherent scattering off the real fermions without change of their states (the "forward" scattering) have been analyzed. The contribution of the neutrino photoproduction process, [Formula: see text], to the neutrino emissivity has been calculated with taking account of a possible resonance on the virtual electron.

scholarly journals NEUTRINO EMISSION IN INHOMOGENEOUS PION CONDENSED QUARK MATTER

2008 ◽  
Vol 17 (09) ◽  
pp. 1906-1916 ◽  
Author(s):  
XUGUANG HUANG ◽  
QUN WANG ◽  
PENGFEI ZHUANG
Keyword(s):  
Neutron Star ◽  
Specific Heat ◽  
Cooling Rate ◽  
Condensed Phase ◽  
Quark Matter ◽  
Baryon Density ◽  
Neutrino Emission ◽  
Neutrino Emissivity

It is believed that quark matter can exist in neutron star interior if the baryon density is high enough. When there is a large isospin density, quark matter could be in a pion condensed phase. We compute neutrino emission from direct Urca processes in such a phase, particularly in the inhomogeneous Larkin-Ovchinnikov-Fulde-Ferrell (LOFF) states. The neutrino emissivity and specific heat are obtained, from which the cooling rate is estimated.

scholarly journals The URCA Process in Convective Cores

1974 ◽  
Vol 66 ◽  
pp. 70-70
Author(s):  
S. Tsuruta ◽  
A. G. W. Cameron
Keyword(s):  
Urca Process

scholarly journals Two New Possible Mechanisms of Supernova-Like Explosions

2005 ◽  
Vol 192 ◽  
pp. 263-268
Author(s):  
V.V. Tikhomirov ◽  
S.E. Yuralevich
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Neutron Stars ◽  
Final Stage ◽  
White Dwarfs ◽  
Primordial Black Holes ◽  
Considerable Part ◽  
Nuclear Burning ◽  
Urca Process ◽  
Hubble Time

SummaryPrimordial black holes (PBHs) of microscopical size can completely absorb neutron stars (NSs) and white dwarfs (WDs) for less than the Hubble time. NS absorption is accompanied by inverse URCA process giving rise to emission of antineutrino. However considerable part of these antineutrino fails to escape NS being drawn into the growing black hole by accreting NS matter. The final stage of dense WD absorption is accompanied by 1051 erg neutrino burst able to ignite nuclear burning giving rise to supernova-like WD explosion.

Neutrino emissivity in the color superconducting quark-hadron-mixed phase

2019 ◽  
Vol 340 (1-3) ◽  
pp. 139-144 ◽  
Author(s):  
A. Freeman ◽  
D. Farrell ◽  
F. Weber ◽  
W. M. Spinella ◽  
M. G. Orsaria ◽  
...  
Keyword(s):  
Mixed Phase ◽  
Neutrino Emissivity
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