48 citations · 120 across the 14 of their papers we have counts for
14 papers
Cooling of Hybrid Stars with a 2SC+ Phase
Tsuneo Noda, Akira Dohi, Nobutoshi Yasutake +3
Recently, Fujimoto, Fukushima & Weise (2019) have proposed a new colour-superconductive state, 2SC+ phase, which can be smoothly connected to the low-density baryon superflui…
Cooling of Isolated Neutron Stars with Hyperon-mixed Kaon-Condensation Matter
Bhavnesh Bhat, Akira Dohi, Takumi Muto +1
We investigate the thermal evolution of isolated neutron stars containing hyperon--mixed kaon--condensed matter, focusing on the role of proton superconductivity. The equation of s…
Constraints on the Neutron-Star Structure from the Clocked X-Ray Burster 1RXS J180408.9342058
Akira Dohi, Wataru Iwakiri, Nobuya Nishimura +3
Type-I X-ray bursts are rapid-brightening transient phenomena on the surfaces of accreting neutron stars (NSs). Some X-ray bursts, called {\it clocked bursters}, exhibit regular be…
Impacts of the direct URCA and Superfluidity inside a Neutron Star on Type-I X-Ray Bursts and X-Ray Superbursts
Akira Dohi, Nobuya Nishimura, Hajime Sotani +4
We investigate the impacts of neutrino cooling mechanism inside the neutron star (NS) core on the light curves of type-I X-ray bursts and X-ray superbursts. From several observatio…
Cooling of Isolated Neutron Stars with Pion Condensation: Possible Fast Cooling in a Low-Symmetry-Energy Model
Akira Dohi, Helei Liu, Tsuneo Noda +1
We studied thermal evolution of isolated neutron stars (NSs) including the pion condensation core, with an emphasis on the stiffness of equation of state (EOS). Many temperature ob…
Effects of Nuclear Equation of State on Type-I X-ray Bursts: Interpretation of the X-ray Bursts from GS 1826-24
A. Dohi, N. Nishimura, M. Hashimoto +3
Type I X-ray bursts are thermonuclear explosions on the neutron star (NS) surface caused by mass accretion from a companion star. Observations of X-ray bursts provide valuable info…
Quiescent luminosities of accreting neutron stars with different equation of states
Helei Liu, Akira Dohi, Masa-aki Hashimoto +3
We model the quiescent luminosity of accreting neutron stars with several equation of states (EOSs), including the effect of pion condensation and superfluidity. As a consequence o…
Possibility of rapid neutron star cooling with the realistic equation of state
Akira Dohi, Ken'ichiro Nakazato, Masa-aki Hashimoto +2
Whether fast cooling processes occur or not is crucial for the thermal evolution of neutron stars. In particular, the threshold of the direct Urca process, which is one of the fast…
Quiescent Light Curve of Accreting Neutron Star MAXI J0556-332
Helei Liu, Yasuhide Matsuo, Masa-aki Hashimoto +2
MAXI J0556-332 is the hottest transient accreting neutron star at the beginning of its quiescence. A theoretical model with crustal heating indicates that an additional shallow hea…
Thermal structures of accreting neutron stars with neutrino losses due to strong pion condensations
Yasuhide Matsuo, Masa-aki Hashimoto, Koutarou Hayashida +3
Quiescent X-ray luminosities are presented in low mass X-ray binaries with use of evolutionary calculations. The calculated luminosities are compared with observed ones in terms of…
Cooling of Compact Stars with Color Superconducting Quark Matter
Tsuneo Noda, Nobutoshi Yasutake, Masa-aki Hashimoto +3
We show a scenario for the cooling of compact stars considering the central source of Cassiopeia A (Cas A). The Cas A observation shows that the central source is a compact star wi…
Thermodynamical description of hadron-quark phase transition and its implications on compact-star phenomena
Nobutoshi Yasutake, Tsuneo Noda, Hajime Sotani +2
One of the most promising possibilities may be the appearance of quark matter in astrophysical phenomena in the light of recent progress in observations. The mechanism of deconfine…
Cooling of Compact Stars with Color Superconducting Phase in Quark Hadron Mixed Phase
Tsuneo Noda, Masa-aki Hashimoto, Nobutoshi Yasutake +3
We present a new scenario for the cooling of compact stars considering the central source of Cassiopeia A (Cas A). The Cas A observation shows that the central source is a compact…
Effects of a New Triple-alpha Reaction on X-ray Bursts of a Helium Accreting Neutron Star
Y. Matsuo, H. Tsujimoto, T. Noda +4
The effects of a new triple- reaction rate (OKK rate) on the helium flash of a helium accreting neutron star in a binary system have been investigated. Since the ignition points…