Results 101 to 110 of about 113,786 (346)

A Model for Dark Matter Halos

open access: yesThe Astrophysical Journal, 2008
A halo model is presented which possesses a constant phase space density (Q) core followed by a radial CDM-like power law decrease in Q. The motivation for the core is the allowance for a possible primordial phase space density limit such as the Tremaine-Gunn upper bound. The space density profile derived from this model has a constant density core and
openaire   +3 more sources

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

open access: yesFEBS 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   +6 more
wiley   +1 more source

On the Mass Dependence of the Inner Slopes of Dark Matter Density Profiles

open access: yesOpen Astronomy, 2014
We study through a semi-analytic model how the inner slopes of relaxed ΛCDM dark matter halos with and without baryons depend on the halo mass. We find that the inner logarithmic density slope, α ≡ d log ρ/d log r, of dark matter halos with baryons has a
Del Popolo A.
doaj   +1 more source

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

open access: yes, 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   +7 more
core   +3 more sources

Dynamical insight into dark matter haloes [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2005
We investigate, using the spherical Jeans equation, self-gravitating dynamical equilibria satisfying a relation rho/sigma_r^3 propto r^-alpha, which holds for simulated dark-matter haloes over their whole resolved radial range. Considering first the case of velocity isotropy, we find that this problem has only one solution with realistic density ...
Dehnen, Walter, McLaughlin, D. E.
openaire   +4 more sources

Age‐Related Changes in Myeloid Cells and Their Impact on Subcutaneous Melanoma Growth in Mice

open access: yesAging and Cancer, EarlyView.
Our findings reveal that age‐related changes in subcutaneous melanoma growth and immunotherapy response are context‐dependent. In models where tumor growth and treatment resistance increase with age, this effect is partly driven by enhanced immunosuppression from myeloperoxidase‐active Gr‐1⁺ myeloid cells.
Kaitlyn M. Landreth   +7 more
wiley   +1 more source

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

open access: yesThe 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   +4 more
doaj   +1 more source

Constraining the Gravitational Potential from the Projected Morphology of Extragalactic Tidal Streams

open access: yesThe Astrophysical Journal, 2023
The positions and velocities of stellar streams have been used to constrain the mass and shape of the Milky Way's dark matter halo. Several extragalactic streams have already been detected, though it has remained unclear what can be inferred about the ...
Jacob Nibauer   +2 more
doaj   +1 more source

Durable B‐Cell Impairment While Sparing IgA B Cells After Ocrelizumab Therapy in Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Ocrelizumab (OCR), a humanized anti‐CD20 monoclonal antibody, is highly efficient in relapsing–remitting multiple sclerosis (RR‐MS). We assessed early cellular B‐cell profiles in patients prior to OCR treatment, on OCR treatment, and after 15 months of therapy discontinuation.
Alexandra Garcia   +20 more
wiley   +1 more source

Halo uncertainties in electron recoil events at direct detection experiments

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
The dark matter direct detection rates are highly correlated with the phase space distribution of dark matter particles in our galactic neighbourhood.
Tarak Nath Maity   +2 more
doaj   +1 more source

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