English
Related papers

Related papers: The Missing Mass of the Milky Way Galaxy

200 papers

Most of the baryons from galaxies have been "missing" and several studies have attempted to map the circumgalactic medium (CGM) of galaxies in their quest. Recent studies with the Hubble Space Telescope have shown that many galaxies contain…

High Energy Astrophysical Phenomena · Physics 2015-06-05 A. Gupta , S. Mathur , Y. Krongold , F. Nicastro , M. Galeazzi

A mechanism in which gravity is the responsible for the generation of the mass of scalar bosons and fermions was proposed recently [arXiv:1003.5126]. The purpose of the present paper is to extend this scheme to vector bosons. The main…

General Physics · Physics 2010-04-20 M. Novello

On the basis of our quantum cosmological approach we show that there can be two previously unknown types of collective states in the universe. One of them relates to a gravitational field, another is connected with a matter (scalar) field…

Astrophysics · Physics 2007-05-23 V. E. Kuzmichev , V. V. Kuzmichev

We present mass and mass profile estimates for the Milky Way Galaxy using the Bayesian analysis developed by Eadie et al (2015b) and using globular clusters (GCs) as tracers of the Galactic potential. The dark matter and GCs are assumed to…

Astrophysics of Galaxies · Physics 2016-10-11 Gwendolyn M. Eadie , William Harris

Dwarf galaxies populating the Galactic halo are assumed to host the largest fractions of dark matter, as calculated from their velocity dispersions. Their major axes are preferentially aligned with the Vast Polar Structure (VPOS) that is…

Astrophysics of Galaxies · Physics 2018-06-27 Francois Hammer , Yanbin Yang , Frederic Arenou , Carine Babusiaux , Jianling Wang , Mathieu Puech , Hector Flores

A new scenario for creation of galactic magnetic fields is proposed which is operative at the cosmological epoch of the galaxy formation, and which relies on unconventional properties of dark matter. Namely, it requires existence of feeble…

Cosmology and Nongalactic Astrophysics · Physics 2013-12-09 Zurab Berezhiani , A. D. Dolgov , I. I. Tkachev

It is shown that the relativistic jet, emitted from the center of the Galaxy during its activity, possessed power and energy spectrum of accelerated protons sufficient to explain the current cosmic rays distribution in the Galaxy. Proton…

Astrophysics of Galaxies · Physics 2015-05-30 Ya. N. Istomin

By mass-energy equivalence, the gravitational field has a relativistic mass density proportional to its energy density. I seek to better understand this mass of the gravitational field by asking whether it plays three traditional roles of…

Classical Physics · Physics 2022-06-22 Charles T. Sebens

Modified Newtonian Dynamics (MOND) is a possible solution for the missing mass problem in galactic dynamics; its predictions are in good agreement with observations in the limit of weak accelerations. However, MOND does not derive from a…

Astrophysics of Galaxies · Physics 2017-01-18 Sascha Trippe

[PASJ Review Paper] Rotation curves are the basic tool for deriving the distribution of mass in spiral galaxies. In this review, we describe various methods to measure rotation curves in the Milky Way and spiral galaxies. We then describe…

Astrophysics of Galaxies · Physics 2016-12-14 Yoshiaki Sofue

The theory of Galactic Winds, driven by the cosmic-ray pressure gradient, is reviewed both on the magnetohydrodynamic and on the kinetic level. In this picture the magnetic field of the Galaxy above the dense gas disk is assumed to have a…

High Energy Astrophysical Phenomena · Physics 2014-11-06 Heinrich J. Völk

We show that, due to the nonlinear nature of gravity, fluctuations in spacetime curvature generate additional gravitational attraction. This fluctuation-induced extra attraction was overlooked in the conventional understanding of the…

General Relativity and Quantum Cosmology · Physics 2024-01-09 Qingdi Wang

The value of excess charge in the kernel of massive body (and the opposite in sign excess charge at the surface) caused by the influence of gravitational forces is determined.

Astrophysics · Physics 2007-10-02 D. A. Kirzhnits , A. A. Shatskiy

Two forms are suggested for the energy-momentum source term associated with an aggregate of dark matter (with the properties described in Paper I). Both have large pressure-like components which dominate the density terms. Using one form a…

General Relativity and Quantum Cosmology · Physics 2020-01-20 H. L. Helfer

The generation of a magnetic field in the Early Universe is considered, due to the gravitational production of the Z-boson field during inflation. Scaled to the epoch of galaxy formation this magnetic field suffices to trigger the galactic…

Astrophysics · Physics 2017-01-25 Konstantinos Dimopoulos

We generalize tensor-scalar theories of gravitation by the introduction of an abnormally weighting type of energy. This theory of tensor-scalar anomalous gravity is based on a relaxation of the weak equivalence principle that is now…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 J. -M. Alimi , A. Fuzfa

We start from the author's metric for a rotating and accelerating Universe and we calculate the force acting on a particle in it. This force consists of two parts: one is derived from a potential, and the other describes a Coriolis force…

General Physics · Physics 2012-05-14 Evangelos Chaliasos

We demonstrate that stars beyond the virial radii of galaxies may be generated by the gravitational impulse received by a satellite as it passes through the pericenter of its orbit around its parent. These stars may become energetically…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Maureen Teyssier , Kathryn V. Johnston , Michael Shara

We investigate the hypothesis that the core of a galaxy has a positive electrical charge with an equal and opposite negative charge distributed over the galactic periphery. We present a determination of the amount of charge needed to…

General Physics · Physics 2015-05-20 S. Reucroft

The source of cosmic gamma-ray bursts (hereafter GRBs) is usually believed to be a stellar mass black hole accreting material from a thick disk. The mechanism for the production of a relativistic wind by such a system is still unknown. We…

Astrophysics · Physics 2009-10-31 Frederic Daigne , Robert Mochkovitch
‹ Prev 1 8 9 10 Next ›