4 papers
Electroweak Doublet Dark Matter for a Galactic Halo Gamma-Ray Excess
Yasunori Nomura, Tomonori Totani
Weakly interacting massive particles provide a well-motivated framework for dark matter, naturally reproducing the observed relic abundance through thermal freeze-out. A recent cla…
20 GeV halo-like excess of the Galactic diffuse emission and implications for dark matter annihilation
Tomonori Totani
Fifteen years of the Fermi Large Area Telescope (LAT) data in the halo region of the Milky Way (MW) are analyzed to search for gamma rays from dark matter annihilation. Gamma-ray m…
The diffuse extragalactic gamma-ray background radiation: star-forming galaxies are not the dominant component
Junling Chen, Tomonori Totani
Star-forming galaxies (SFGs) are considered to be an important component of the diffuse extragalactic gamma-ray background (EGB) radiation observed in 0.1 -- 820 GeV, but their qua…
Time-Frequency Correlation of Repeating Fast Radio Bursts: Correlated Aftershocks Tend to Exhibit Downward Frequency Drifts
Shotaro Yamasaki, Tomonori Totani
The production mechanism of fast radio bursts (FRBs)--mysterious, bright, millisecond-duration radio flashes from cosmological distances--remains unknown. Understanding potential c…