47 citations · 199 across the 13 of their papers we have counts for
14 papers
Constraints on Annihilating Dark Matter from Gamma-Ray Background-Galaxy Shape Correlations: Model-independent Null Results and Moderate Template-based Signals
Masato Shirasaki, Deheng Song, Oscar Macias +2
We revisit the cross-correlation between the unresolved -ray background and galaxy shapes to constrain the annihilation cross section of particle dark matter. Our analysis uses…
Revisiting axion dark matter with nonlinear transitions
Max Miyazaki, Yuma Narita, Deheng Song +2
Recently, two of the present authors showed that even when the axion momentum is much smaller than its mass, the axion can still behave like radiation if its energy density greatly…
Composite asymmetric dark matter with a dark photon portal: Multimessenger tests
Saikat Das, Ayuki Kamada, Takumi Kuwahara +2
Composite asymmetric dark matter (ADM) is the framework that naturally explains the coincidence of the baryon density and the dark matter density of the Universe. Through a portal…
Robust inference of the Galactic centre gamma-ray excess spatial properties
Deheng Song, Christopher Eckner, Chris Gordon +6
The gamma-ray Fermi-LAT Galactic centre excess (GCE) has puzzled scientists for over 15 years. Despite ongoing debates about its properties, and especially its spatial distribution…
Search for heavy dark matter from dwarf spheroidal galaxies: leveraging cascades and subhalo models
Deheng Song, Nagisa Hiroshima, Kohta Murase
The Fermi Large Area Telescope (Fermi-LAT) has been widely used to search for Weakly Interacting Massive Particle (WIMP) dark matter signals due to its unparalleled sensitivity in…
Constraining decaying very heavy dark matter from galaxy clusters with 14 year Fermi-LAT data
Deheng Song, Kohta Murase, Ali Kheirandish
Galaxy clusters are promising targets for indirect detection of dark matter thanks to the large dark matter content. Using 14 years of Fermi-LAT data from seven nearby galaxy clust…
Twin Sterile Neutrino Dark Matter
Ian Holst, Dan Hooper, Gordan Krnjaic +1
We propose that the dark matter of our Universe could be sterile neutrinos which reside within the twin sector of a mirror twin Higgs model. In our scenario, these particles are pr…
External Inverse-Compton and Proton Synchrotron Emission from the Reverse Shock as the Origin of VHE Gamma-Rays from the Hyper-Bright GRB 221009A
B. Theodore Zhang, Kohta Murase, Kunihito Ioka +3
The detection of the hyper-bright gamma-ray burst (GRB) 221009A enables us to explore the nature of GRB emission and the origin of very-high-energy (VHE) gamma-rays. We analyze the…
Flaring-associated Complex Dynamics in Two M-dwarfs Revealed by Fast, Time-resolved Spectroscopy
J. Wang, H. L. Li, L. P. Xin +11
Habitability of an exoplanet is believed to be profoundly affected by activities of the host stars, although the related coronal mass ejections (CMEs) are still rarely detected in…
Gamma-ray emission from the Sagittarius Dwarf Spheroidal galaxy due to millisecond pulsars
Roland M. Crocker, Oscar Macias, Dougal Mackey +13
The Fermi Bubbles are giant, gamma-ray emitting lobes emanating from the nucleus of the Milky Way discovered in ~1-100 GeV data collected by the Large Area Telescope on board the F…
Measuring the smearing of the Galactic 511 keV signal: positron propagation or supernova kicks?
Thomas Siegert, Roland M. Crocker, Oscar Macias +4
We use 15 years of -ray data from INTEGRAL/SPI in a refined investigation of the morphology of the Galactic bulge positron annihilation signal. Our spatial analysis confirms tha…
Cherenkov Telescope Array sensitivity to the putative millisecond pulsar population responsible for the Galactic center excess
Oscar Macias, Harm van Leijen, Deheng Song +3
The leading explanation of the Galactic center -ray excess is the extended emission from a unresolved population of millisecond pulsars (MSPs) in the Galactic b…
Evidence for a high-energy tail in the gamma-ray spectra of globular clusters
Deheng Song, Oscar Macias, Shunsaku Horiuchi +2
Millisecond pulsars are very likely the main source of gamma-ray emission from globular clusters. However, the relative contributions of two separate emission processes--curvature…
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…