30 citations · 72 across the 7 of their papers we have counts for
10 papers
Vortex Creep Heating in Neutron Stars
Motoko Fujiwara, Koichi Hamaguchi, Natsumi Nagata +1
Recent observations of old warm neutron stars suggest the presence of a heating source in these stars, requiring a paradigm beyond the standard neutron-star cooling theory. In this…
New description of the scaling evolution of the cosmological magneto-hydrodynamic system
Fumio Uchida, Motoko Fujiwara, Kohei Kamada +1
We present a new description of cosmological evolution of the primordial magnetic field under the condition that it is non-helical and its energy density is larger than the kinetic…
Capture of Electroweak Multiplet Dark Matter in Neutron Stars
Motoko Fujiwara, Koichi Hamaguchi, Natsumi Nagata +1
If dark matter has a sizable scattering cross section with nucleons, it can efficiently be captured by a neutron star. Its energy is then transferred to the neutron star as heat th…
Gamma-ray line from electroweakly interacting non-abelian spin-1 dark matter
Tomohiro Abe, Motoko Fujiwara, Junji Hisano +1
We study gamma-ray line signatures from electroweakly interacting non-abelian spin-1 dark matter (DM). In this model, -odd spin-1 particles including a DM candidate have the S…
Vanishing or non-vanishing rainbow? Reduction formulas of electric dipole moment
Motoko Fujiwara, Junji Hisano, Takashi Toma
In this paper, we derive a simplified formula of electric dipole moments (EDMs) of a fermion. In the Standard Model, it is well-known that non-trivial cancellations between some ra…
Electric dipole moments in the extended scotogenic models
Motoko Fujiwara, Junji Hisano, Chihiro Kanai +1
Electric dipole moments (EDMs) of charged leptons arise from a new source of CP violation in the lepton sector. In this paper, we calculate the EDMs of the charged leptons in the m…