Results 41 to 50 of about 6,902 (68)
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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The Denoised, Deconvolved, and Decomposed Fermi $\gamma$-ray sky - An application of the D$^3$PO algorithm [PDF]
, 2015 We analyze the 6.5yr all-sky data from the Fermi LAT restricted to gamma-ray photons with energies between 0.6-307.2GeV. Raw count maps show a superposition of diffuse and point-like emission structures and are subject to shot noise and instrumental ...
Enßlin, Torsten A. +3 more
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The Planes of Satellite Galaxies Problem, Suggested Solutions, and Open Questions
, 2018 Satellite galaxies of the Milky Way and of the Andromeda galaxy have been found to preferentially align in significantly flattened planes of satellite galaxies, and available velocity measurements are indicative of a preference of satellites in those ...
Pawlowski, Marcel S.
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The Dark Matter at the End of the Galaxy
, 2010 Dark matter density profiles based upon Lambda-CDM cosmology motivate an ansatz velocity distribution function with fewer high velocity particles than the Maxwell-Boltzmann distribution or proposed variants.
A. S. Eddington +8 more
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Antimatter and antistars in the universe and in the Galaxy
, 2014 We consider consequences of hypothetical existence of baryo-dense stars created in the very early universe within an extension of Affleck-Dine scenario of baryogenesis. New constraints on the possible number of compact antimatter objects are derived. The
Blinnikov, S. I. +2 more
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Galactic dynamics and long-range quantum gravity
, 2019 We explore in a systematic way the possibility that long-range quantum gravity effects could play a role at galactic scales and could be responsible for the phenomenology commonly attributed to dark matter.
Cadoni, Mariano, Tuveri, Matteo
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Development of dark disk model of positron anomaly origin
, 2018 Dark disk model could be a remedy for dark matter (DM) explanation of positron anomaly (PA) in cosmic rays (CR). The main difficulty in PA explanation relates to cosmic gamma-radiation which is inevitably produced in DM annihilation or decay leading to ...
Belotsky, K. M. +2 more
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Solar and Stellar Photospheric Abundances
, 2016 The determination of photospheric abundances in late-type stars from spectroscopic observations is a well-established field, built on solid theoretical foundations.
Prieto, Carlos Allende
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Unified Superfluid Dark Sector
, 2019 We present a novel theory of a unified dark sector, where late-time cosmic acceleration emerges from the dark matter superfluid framework. The system is described by a superfluid mixture consisting of two distinguishable states with a small energy gap ...
Brandenberger, Robert +3 more
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