Results 1 to 10 of about 6,868 (42)
21-cm observations and warm dark matter models [PDF]
, 2019 Observations of the redshifted 21-cm signal (in absorption or emission) allow us to peek into the epoch of "dark ages" and the onset of reionization. These data can provide a novel way to learn about the nature of dark matter, in particular about the ...
Boyarsky, Alexey +4 more
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Revisiting the Equipartition Assumption in Star-forming Galaxies [PDF]
, 2019 Energy equipartition between cosmic rays and magnetic fields is often assumed to infer magnetic field properties from the synchrotron observations of star-forming galaxies. However, there is no compelling physical reason to expect the same.
Beck, Rainer, Seta, Amit
core +2 more sources
On galaxy rotation curves from a continuum mechanics approach to modified gravity [PDF]
, 2017 We consider a modification of General Relativity motivated by the treatment of anisotropies in Continuum Mechanics. The Newtonian limit of the theory is formulated and applied to galactic rotation curves.
Boehmer, Christian G. +2 more
core +4 more sources
Self-Interacting Dark Matter Subhalos in the Milky Way's Tides
, 2020 We study evolution of self-interacting dark matter (SIDM) subhalos in the Milky Way (MW) tidal field. The interaction between the subhalos and the MW's tides lead to more diverse dark matter distribution in the inner region, compared to their cold dark ...
Sales, Laura V. +4 more
core +1 more source
New Limits on the Dark Matter Lifetime from Dwarf Spheroidal Galaxies using Fermi-LAT [PDF]
, 2016 Dwarf spheroidal galaxies (dSphs) are promising targets for the indirect detection of dark matter through gamma-ray emission due to their proximity, lack of astrophysical backgrounds and high dark matter density.
Baring, Matthew G. +3 more
core +4 more sources
NuSTAR Tests of Sterile-Neutrino Dark Matter: New Galactic Bulge Observations and Combined Impact
, 2020 We analyze two dedicated NuSTAR observations with exposure ${\sim}190$ ks located ${\sim}10^\circ$ from the Galactic plane, one above and the other below, to search for x-ray lines from the radiative decay of sterile-neutrino dark matter.
Beacom, John F. +6 more
core +1 more source
Applications of Stellar Population Synthesis in the Distant Universe
, 2020 Comparison with artificial galaxy models is essential for translating the incomplete and low signal-to-noise data we can obtain on astrophysical stellar populations to physical interpretations which describe their composition, physical properties ...
Stanway, Elizabeth R.
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, 2017 This is the translation into English of the introduction, conclusion, and the list of references of the review on massive primordial black holes, which is submitted in Russian to Uspekhi Fizicheskikh Nauk (Physics-Uspekhi).
Dolgov, A. D.
core +1 more source
Constraining the Milky Way Dark Matter Density Profile with Gamma-Rays with Fermi-LAT [PDF]
, 2012 We study the abilities of the Fermi-LAT instrument on board of the Fermi mission to simultaneously constrain the Milky Way dark matter density profile and some dark matter particle properties, as annihilation cross section, mass and branching ratio into ...
Bernal, Nicolas, Palomares-Ruiz, Sergio
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, 2019 The Two-body problem of $M31$ and the Milky Way (MW) galaxies with a Cosmological Constant background is studied, with emphasis on the possibility that they experienced Past Encounters. By implementing the Timing Argument (TA), it is shown that if $M{31}$
Benisty, David +2 more
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