251 citations · 2k across the 56 of their papers we have counts for
57 papers
Parameter estimation from the transit light curve including gravitational lensing effects
Shinta Kasuya, Akihiko Fukui, Ayana Suzuki +1
We study transit light curves of exoplanets, incorporating gravitational lensing effects, and explore the possibility of estimating planetary masses using only the transit light cu…
Formation of primordial black holes through Q-balls
Shinta Kasuya, Masahiro Kawasaki, Alexander Kusenko +1
We study the primordial black hole (PBH) formation from Q-balls that are non-topological solitons in scalar field theories. We develop a formula for calculating the density perturb…
Charge distribution of the gauge-mediation type Q ball
Shinta Kasuya, Masahiro Kawasaki
We numerically study the formation of the gauge-mediation type Q balls in the logarithmic square potential on three-dimensional lattices. We obtain the broad charge distribution of…
Detection of molecular clouds in the PeVatron candidate source LHAASO J03415258 by the Nobeyama 45-m radio telescope
Naomi Tsuji, Shunya Takekawa, Kaya Mori +8
We report a new CO observation survey of LHAASO J03415258 using the Nobeyama Radio Observatory (NRO) 45-m telescope. LHAASO J03415258 is one of the unidentified ultra-high-en…
MeV gamma rays from Q-ball decay
Shinta Kasuya, Masahiro Kawasaki, Naomi Tsuji
We study the supersymmetric Q balls which decay at present and find that they create a distinctive spectrum of gamma rays at around O(10) MeV. The charge of the Q ball is lepton nu…
Enhancement of second-order gravitational waves at Q-ball decay
Shinta Kasuya, Masahiro Kawasaki, Kai Murai
The recent observation of He favors a large lepton asymmetry at the big bang nucleosynthesis. If Q-balls with a lepton charge decay after the electroweak phase transition, such…