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Cross Correlation of the Extragalactic Gamma-ray Background with Thermal Sunyaev-Zel'dovich Effect in the Cosmic Microwave Background
Masato Shirasaki, Oscar Macias, Shin'ichiro Ando +2
Cosmic rays in galaxy clusters are unique probes of energetic processes operating with large-scale structures in the Universe. Precise measurements of cosmic rays in galaxy cluster…
Maximum Entropy Estimation of the Galactic Bulge Morphology via the VVV Red Clump
Brenna Coleman, Dylan Paterson, Chris Gordon +2
The abundance and narrow magnitude dispersion of Red Clump (RC) stars make them a popular candidate for mapping the morphology of the bulge region of the Milky Way. Using an estima…
Probing heavy dark matter decays with multi-messenger astrophysical data
Koji Ishiwata, Oscar Macias, Shin'ichiro Ando +1
We set conservative constraints on decaying dark matter particles with masses spanning a very wide range ( GeV). For this we use multimessenger observations of cosmic…
Constraining dark matter annihilation with HSC Low Surface Brightness Galaxies
Daiki Hashimoto, Oscar Macias, Atsushi J. Nishizawa +4
Searches for dark matter annihilation signals have been carried out in a number of target regions such as the Galactic Center and Milky Way dwarf spheroidal galaxies (dSphs), among…
Discovery prospects of dwarf spheroidal galaxies for indirect dark matter searches
Shin'ichiro Ando, Bradley J. Kavanagh, Oscar Macias +12
We study the prospects for the Large Synoptic Survey Telescope (LSST) to find new dwarf spheroidal galaxies in the Milky Way. Adopting models of Milky-Way halo substructure and phe…
Inverse Compton emission from millisecond pulsars in the Galactic bulge
Deheng Song, Oscar Macias, Shunsaku Horiuchi
Analyses of Fermi Gamma-Ray Space Telescope data have revealed a source of excess diffuse gamma rays towards the Galactic center that extends up to roughly 20 degrees in latit…
Strong Evidence that the Galactic Bulge is Shining in Gamma Rays
Oscar Macias, Shunsaku Horiuchi, Manoj Kaplinghat +3
There is growing evidence that the Galactic Center Excess identified in the -LAT gamma-ray data arises from a population of faint astrophysical sources. We provide…