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We present our recently developed 3-dimensional chemodynamical code for galaxy evolution. This code follows the evolution of different galactic components like stars, dark matter and different components of the interstellar medium (ISM),…

Astrophysics · Physics 2009-11-07 P. Berczik , G. Hensler , Ch. Theis , R. Spurzem

Solving the Dark Matter enigma represents one of the key objectives of contemporary physics. Recent astrophysical and cosmological measurements have unambiguously demonstrated that ordinary matter contributes to less than 5 % of the energy…

Astrophysics · Physics 2015-06-24 Gabriel Chardin

We dynamically evolve for the first time dark matter admixed neutron stars with fermionic dark matter. These systems are mixtures of the ordinary nuclear matter of a neutron star and dark matter. To perform our dynamical evolutions, we…

General Relativity and Quantum Cosmology · Physics 2022-01-19 Troy Gleason , Ben Brown , Ben Kain

Gravitational-wave observations have just started probing the properties of black hole binary merger populations. The observation of binaries with very massive black holes and significantly asymmetric masses motivates the study of dense…

High Energy Astrophysical Phenomena · Physics 2024-08-20 Konstantinos Kritos , Vladimir Strokov , Vishal Baibhav , Emanuele Berti

The present work derived the robust constraints on annihilating WIMP parameters utilizing new radio observations of M31, as well as new studies of its dark matter distribution and other properties. The characteristics of emission due to DM…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-25 Andrei E. Egorov

We describe the public release of the Cluster Monte Carlo Code (CMC) a parallel, star-by-star $N$-body code for modeling dense star clusters. CMC treats collisional stellar dynamics using H\'enon's method, where the cumulative effect of…

An accurate assessment of white dwarf cooling times is paramount to place white dwarf cosmochronology of Galactic populations on more solid grounds. This issue is particularly relevant in view of the enhanced observational capabilities…

Solar and Stellar Astrophysics · Physics 2015-06-16 Maurizio Salaris , Leandro G. Althaus , Enrique García-Berro

The Weakly Interacting Massive Particles(WIMPs) have long been the favored CDM candidate in the standard $\Lambda$CDM model. However, owing to great improvement in the experimental sensitivity in the past decade, some parameter space of the…

Cosmology and Nongalactic Astrophysics · Physics 2023-11-15 Abineet Parichha , Shiv Sethi

The combination of S-matrix unitarity and the dynamics of thermal freeze-out for massive relic particles (denoted here simply by WIMPs) implies a lower limit on the density of such particles, that provide a (potentially sub-dominant)…

High Energy Physics - Phenomenology · Physics 2015-07-29 Kfir Blum , Yanou Cui , Marc Kamionkowski

The first stars in the universe form inside $\sim 10^6 M_\odot$ dark matter (DM) haloes whose initial density profiles are laid down by gravitational collapse in hierarchical structure formation scenarios. During the formation of the first…

Astrophysics · Physics 2011-02-11 Katherine Freese , Paolo Gondolo , J. A. Sellwood , Douglas Spolyar

The slow, dense winds observed in evolved asymptotic giant branch (AGB) stars are usually attributed to a combination of dust formation in the dynamical inner atmosphere and momentum transfer from stellar photons interacting with the newly…

Solar and Stellar Astrophysics · Physics 2019-06-26 Sara Bladh

Collaborations in astronomy and astrophysics are faced with numerous cyber infrastructure challenges, such as large data sets, the need to combine heterogeneous data sets, and the challenge to effectively collaborate on those large,…

Instrumentation and Methods for Astrophysics · Physics 2018-05-23 Falk Herwig , Robert Andrassy , Nic Annau , Ondrea Clarkson , Benoit Cote , Aaron D'Sa , Sam Jones , Belaid Moa , Jericho O'Connell , David Porter , Christian Ritter , Paul Woodward

We present a numerical code intended for calculating stellar evolution in close binary systems. In doing so, we consider that mass transfer episodes occur when the stellar size overflows the corresponding Roche lobe. In such situation we…

Astrophysics · Physics 2009-11-07 O. G. Benvenuto , M. A. De Vito

The vast majority of stars that populate the Universe will end their evolution as white-dwarf stars. Applications of white dwarfs include cosmochronology, evolution of planetary systems, and also as laboratories to study non-standard…

Solar and Stellar Astrophysics · Physics 2020-10-14 Alejandro H. Córsico

These lectures are intended to provide a brief pedagogical review of dark matter for the newcomer to the subject. We begin with a discussion of the astrophysical evidence for dark matter. The standard weakly-interacting massive particle…

Cosmology and Nongalactic Astrophysics · Physics 2009-07-14 Guido D'Amico , Marc Kamionkowski , Kris Sigurdson

This is the second in a series of papers on the construction and validation of a three-dimensional code for the solution of the coupled system of the Einstein equations and of the general relativistic hydrodynamic equations, and on the…

General Relativity and Quantum Cosmology · Physics 2009-11-07 J. Font , T. Goodale , S. Iyer , M. Miller , L. Rezzolla , E. Seidel , N. Stergioulas , W. Suen , M. Tobias

The annihilation of weakly interacting massive particles can provide an important heat source for the first (Pop. III) stars, potentially leading to a new phase of stellar evolution known as a "Dark Star". When dark matter (DM) capture via…

Astrophysics · Physics 2009-06-23 Katherine Freese , Douglas Spolyar , Anthony Aguirre

The next generation of dark matter (DM) direct detection experiments and neutrino telescopes will probe large swaths of dark matter parameter space. In order to interpret the signals in these experiments, it is necessary to have good models…

High Energy Astrophysical Phenomena · Physics 2009-07-30 Annika H. G. Peter

We present a set of new analytic solutions aimed at self-consistently describing the spatially-averaged time evolution of the gas, stellar, metal, and dust content in an individual starforming galaxy hosted within a dark halo of given mass…

Astrophysics of Galaxies · Physics 2019-08-14 L. Pantoni , A. Lapi , M. Massardi , S. Goswami , L. Danese

The Evolution STEllaire en Rotation (ESTER) code is the first 2D stellar structure code to be made open-source and freely available to the astronomy and astrophysics community. An important and novel advancement of this code is that it can…

Solar and Stellar Astrophysics · Physics 2025-09-29 Russel White , Jane Pratt , Michel Rieutord
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