Results 41 to 50 of about 917,117 (194)

The First Robust Evidence Showing a Dark Matter Density Spike Around the Supermassive Black Hole in OJ 287

The Astrophysical Journal Letters
Black hole dynamics suggests that dark matter would redistribute near a supermassive black hole (SMBH) to form a density spike. However, no direct evidence of a dark matter density spike around an SMBH has been identified.
Man Ho Chan, Chak Man Lee
doaj   +1 more source

The distribution of inelastic dark matter in the Sun

European Physical Journal C: Particles and Fields, 2018
If dark matter is composed of new particles, these may become captured after scattering with nuclei in the Sun, thermalize through additional scattering, and finally annihilate into neutrinos that can be detected on Earth.
Mattias Blennow, Stefan Clementz, Juan Herrero-Garcia   +2 more
doaj   +1 more source

A simple analytical model for dark matter halo structure and adiabatic contraction

, 2006
A simple analytical model for describing inner parts of dark matter halo is considered. It is assumed that dark matter density is power-law. The model deals with dark matter distribution function in phase space of adiabatic invariants (radial action and ...
A. V. Gurevich, C. Austin, E. A. Vasil’ev, G. Bertone, G. Blumenthal, G. Mamon, H. Zhao, J. An, J. Binney, J. Diemand, J. Navarro, J. Sellwood, J. Taylor, M. I. Zel’nikov, O. Gnedin, P. Gondolo, S. Hansen, S. Hansen, S. Hansen, S. Kazantzidis, V. Cardone, W. Dehnen, W. Dehnen   +22 more
core   +1 more source

Hierarchical Structure in Dark Matter Distributions [PDF]

Symposium - International Astronomical Union, 1998
Galaxy observers argue for the dark halo surrounding each galaxy, while cluster investigators discuss the dominance of dark matter (DM) in the intra-cluster space. Then, what is the relation between the cluster DM and the DM associated with member galaxies of the cluster?
openaire   +1 more source

Distribution of annihilation luminosities in dark matter substructure [PDF]

Physical Review D, 2010
We calculate the probability distribution function (PDF) of the expected annihilation luminosities of dark matter subhalos as a function of subhalo mass and distance from the Galactic center using a semi-analytical model of halo evolution. We find that the PDF of luminosities is relatively broad, exhibiting a spread of as much as an order of magnitude ...
Koushiappas, Savvas M., Zentner, Andrew R., Kravtsov, Andrey V.   +2 more
openaire   +2 more sources

Indirect Detection of Decaying Dark Matter with High Angular Resolution: The Case for Axion Search by IRCS on the Subaru Telescope

The Astrophysical Journal
Recent advances in photon detectors have provided exceptional sensitivities to dark matter with high angular resolution. Motivated by this, we present a detailed study of photon flux from dark matter decay in dwarf spheroidal galaxies (dSphs) by focusing
Wen Yin, Kohei Hayashi
doaj   +1 more source

The interaction of dark matter cusp with the baryon component in disk galaxies

, 2012
In this paper we examine the effect of the formation and evolution of the disk galaxy on the distribution of dark halo matter. We have made simulations of isolated dark matter (DM) halo and two component (DM + baryons).
A. A. Dutton, A. Helmi, A. Khoperskov, A. P. Cooper, A. Rosen, A. V. Khoperskov, A. V. Khoperskov, A. V. Khoperskov, A. V. Maccio, A. V. Zasov, A.G.Doroshkevich,V. N. Lukash, B. Allgood, B. C. Whitmore, B. Leer van, B. M. Shustov, B. M. Shustov, B.M. Shustov, D. Z. Wiebe, E. Griv, E. Mikheeva, F. Governato, H. Mo, I.V. Igumenshchev, J. A. Sellwood, J. Barnes, J. Dubinski, J. F. Navarro, J. F. Navarro, K. Wada, M. A. Eremin, M. D. Weinberg, M. G. Abadi, M. Gustafsson, M. Kuhlen, M. Mori, M. Spano, M. Steinmetz, M. V. Medvedev, N. Katz, P. Das, R. Roskar, S. A. Khoperskov, V. Belokurov, W. J. G. Blok de, W. R. Brown   +44 more
core   +1 more source

The dark matter environment of the Abell 901/902 supercluster: a weak lensing analysis of the HST STAGES survey [PDF]

, 2008
We present a high resolution dark matter reconstruction of the z=0.165 Abell 901/902 supercluster from a weak lensing analysis of the HST STAGES survey.
Andy N. Taylor, Asmus Böhm, Bartelmann M., Baugh C. M., Bond J. R., Boris Häußler, Catherine Heymans, Chien Y. Peng, Christian Wolf, Daniel H. McIntosh, David Bacon, Dolag K., Eelco van Kampen, Eric F. Bell, Fabio D. Barazza, John A. R. Caldwell, Klaus Meisenheimer, Knud Jahnke, Kroupa P., Kyle Lane, Ludovic Van Waerbeke, Lutz Wisotzki, Marco Barden, Meghan E. Gray, Michael Balogh, Schrabback T., Sebastian F. Sánchez, Shardha Jogee, Xianzhong Zheng, Yannick Mellier   +29 more
core   +3 more sources

The Roman View of Strong Gravitational Lenses

The Astrophysical Journal
Galaxy–galaxy strong gravitational lenses can constrain dark matter models and the Lambda cold dark matter cosmological paradigm at subgalactic scales. Currently, there is a dearth of images of these rare systems with high signal-to-noise ratio (SNR) and
Bryce Wedig, Tansu Daylan, Simon Birrer, Francis-Yan Cyr-Racine, Cora Dvorkin, Douglas P. Finkbeiner, Alan Huang, Xiaosheng Huang, Rahul Karthik, Narayan Khadka, Priyamvada Natarajan, Anna M. Nierenberg, Annika H. G. Peter, Justin D. R. Pierel, Xianzhe TZ Tang, Risa H. Wechsler   +15 more
doaj   +1 more source

Dark matter, black holes, and gravitational waves

Nuclear Physics B
The formation and growth of black holes can strongly influence the distribution of dark matter around them. I discuss here the different types of dark matter overdensities around black holes, including dark matter cusps, spikes, mounds, crests, and ...
Gianfranco Bertone
doaj   +1 more source