Results 91 to 100 of about 117,029 (345)

Modeling the Galaxy Distribution in Clusters using Halo Cores

The Open Journal of Astrophysics, 2023
The galaxy distribution in dark matter-dominated halos is expected to approximately trace the details of the underlying dark matter substructure. In this paper we introduce halo "core-tracking" as a way to efficiently follow the small-scale substructure ...
Danila Korytov, Esteban Rangel, Lindsey Bleem, Nicholas Frontiere, Salman Habib, Katrin Heitmann, Joseph Hollowed, Adrian Pope   +7 more
doaj   +1 more source

Dark Matter Direct Search Rates in Simulations of the Milky Way and Sagittarius Stream

, 2012
We analyze self-consistent N-body simulations of the Milky Way disk and the ongoing disruption of the Sagittarius dwarf satellite to study the effect of Sagittarius tidal debris on dark matter detection experiments. In agreement with significant previous
Purcell, Chris W., Wang, Mei-Yu, Zentner, Andrew R.   +2 more
core   +1 more source

Bounds on the mass and abundance of dark compact objects and black holes in dwarf spheroidal galaxy halos [PDF]

, 2007
We establish new dynamical constraints on the mass and abundance of compact objects in the halo of dwarf spheroidal galaxies. In order to preserve kinematically cold the second peak of the Ursa Minor dwarf spheroidal (UMi dSph) against gravitational ...
F. J. Sánchez-Salcedo, Goodwin S. P., Hidalgo-Gamez A. M., Irwin M., Klessen R., Lake G., Sanchez-Salcedo F. J., V. Lora   +7 more
core   +3 more sources

Dark Radiation Alleviates Problems with Dark Matter Halos [PDF]

Physical Review Letters, 2014
We show that a scalar and a fermion charged under a global U(1) symmetry can not only explain the existence and abundance of dark matter (DM) and dark radiation (DR), but also imbue DM with improved scattering properties at galactic scales, while remaining consistent with all other observations.
Chu, Xiaoyong, Dasgupta, Basudeb
openaire   +3 more sources

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

Molecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen, Lucrezia De Santis, Bret M. Stephens, Vincent Bernard, Jörg C. Kalff, Lara Braun, Phillipp Leyendecker, Johannes Röttgen, Daniel Weissinger, Anirban Maitra, Paola A. Guerrero, Alexander Semaan   +11 more
wiley   +1 more source

Preliminary Study of Dark-matter-dominated Systems: Further Analysis for Galactic Dark Matter Halos with Pressure

The Astrophysical Journal
Low-surface-brightness galaxies are excellent laboratories, where stars and baryonic matter act as tracers of the gravitational potential of the dark matter halo.
A. Aceña, J. Barranco, A. Bernal, E. López, M. Llerena   +4 more
doaj   +1 more source

Halo model description of the non-linear dark matter power spectrum at $k \gg 1$ Mpc$^{-1}$

, 2010
Accurate knowledge of the non-linear dark-matter power spectrum is important for understanding the large-scale structure of the Universe, the statistics of dark-matter haloes and their evolution, and cosmological gravitational lensing.
Adelman-McCarthy, Allgood, Angulo, Bacon, Bartelmann, Bond, Boylan-Kolchin, Bryan, Bullock, Cacciato, Carlo Giocoli, Colless, Cooray, De Lucia, Diemand, Dolag, Duffy, Eisenstein, Eke, Faltenbacher, Gao, Gao, Gao, Ghigna, Giocoli, Giocoli, Giocoli, Governato, Green, Guzzo, Hagan, Hayashi, Hayashi, Jenkins, Jing, Jing, Jing, Kauffmann, Kitayama, Lacey, Macciò, Mandelbaum, Marcello Cacciato, Matthias Bartelmann, Meneux, Mo, Moore, Moore, Navarro, Neto, Norberg, Padmanabhan, Peacock, Peacock, Peebles, Power, Press, Ravi K. Sheth, Scherrer, Scoccimarro, Seljak, Seljak, Sheth, Sheth, Sheth, Sheth, Sheth, Sheth, Smith, Smith, Smith, Smith, Spergel, Springel, Springel, Springel, Tormen, Tormen, Van Den Bosch, Wang, Wechsler, White, White, Zehavi, Zhao, Zhao, Zhao   +86 more
core   +1 more source

Microlensing and Halo Cold Dark Matter

Physical Review Letters, 1995
We discuss the implications of the more than 50 microlensing events seen by the EROS, MACHO, and OGLE collaborations for the composition of the halo of our galaxy. The event rates indicate that the halo mass fraction in MACHO's is less than 30\%, consistent with expectations for a universe whose primary component is cold dark matter.
Gates, Evalyn I., Gyuk, Geza, Turner, Michael S.   +2 more
openaire   +3 more sources

Overview of molecular signatures of senescence and associated resources: pros and cons

FEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas, Sylvia Vagena, Pavlos Pantelis, Giorgos Theocharous, Russel Petty, Konstantinos Evangelou, Vassilis G. Gorgoulis   +6 more
wiley   +1 more source

Black hole in Dehnen $$\left( 1,4,\frac{1}{2}\right) $$ 1 , 4 , 1 2 dark matter halo: exact solution, lensing, light ring, and thermodynamics

European Physical Journal C: Particles and Fields
In this work, we present the exact solution of a static, spherically symmetric black hole embedded in a Dehnen $$\left( 1,4,\frac{1}{2}\right) $$ 1 , 4 , 1 2 dark matter halo. We explore both its optical and thermodynamic properties.
David Senjaya
doaj   +1 more source