Results 1 to 10 of about 28,496 (146)

Using frequency maps to explore the distribution function of the Milky Way stellar halo

EPJ Web of Conferences, 2012
Resolved surveys of the Milky Way's stellar halo can obtain all 6 phase space coordinates of tens of thousands of individual stars, making it possible to compute their 3-dimensional orbits.
Valluri M.
doaj   +3 more sources

The GD-1 Stellar Stream Perturber as a Core-collapsed Self-interacting Dark Matter Halo [PDF]

The Astrophysical Journal Letters
The GD-1 stellar stream exhibits spur and gap structures that may result from a close encounter with a dense substructure. When interpreted as a dark matter subhalo, the perturber is denser than predicted in the standard cold dark matter (CDM) model.
Xingyu Zhang, Hai-Bo Yu, Daneng Yang, Ethan O. Nadler   +3 more
doaj   +2 more sources

Gravothermal Solutions of SIDM Halos: Mapping from Constant to Velocity-dependent Cross Section

The Astrophysical Journal, 2023
The scale-free gravothermal fluid formalism has long proved effective in describing the evolution of self-interacting dark matter halos with a constant dark matter particle cross section.
Shengqi Yang, Xiaolong Du, Zhichao Carton Zeng, Andrew Benson, Fangzhou Jiang, Ethan O. Nadler, Annika H. G. Peter   +6 more
doaj   +1 more source

The Stellar Halo of the Galaxy is Tilted and Doubly Broken

The Astronomical Journal, 2022
Modern Galactic surveys have revealed an ancient merger that dominates the stellar halo of our galaxy (Gaia–Sausage–Enceladus, GSE). Using chemical abundances and kinematics from the H3 Survey, we identify 5559 halo stars from this merger in the radial ...
Jiwon Jesse Han, Charlie Conroy, Benjamin D. Johnson, Joshua S. Speagle, Ana Bonaca, Vedant Chandra, Rohan P. Naidu, Yuan-Sen Ting, Rebecca Woody, Dennis Zaritsky   +9 more
doaj   +1 more source

Building an Acceleration Ladder with Tidal Streams and Pulsar Timing

The Astrophysical Journal Letters, 2023
We analyse stellar streams in action-angle coordinates combined with recent local direct acceleration measurements to provide joint constraints on the potential of our galaxy.
Peter Craig, Sukanya Chakrabarti, Robyn E. Sanderson, Farnik Nikakhtar   +3 more
doaj   +1 more source

Structure, Kinematics, and Observability of the Large Magellanic Cloud’s Dynamical Friction Wake in Cold versus Fuzzy Dark Matter

The Astrophysical Journal, 2023
The Large Magellanic Cloud (LMC) will induce a dynamical friction (DF) wake on infall to the Milky Way (MW). The MW’s stellar halo will respond to the gravity of the LMC and the dark matter (DM) wake, forming a stellar counterpart to the DM wake.
Hayden R. Foote, Gurtina Besla, Philip Mocz, Nicolás Garavito-Camargo, Lachlan Lancaster, Martin Sparre, Emily C. Cunningham, Mark Vogelsberger, Facundo A. Gómez, Chervin F. P. Laporte   +9 more
doaj   +1 more source

Overview of the DESI Milky Way Survey

The Astrophysical Journal, 2023
We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak National Observatory.
Andrew P. Cooper, Sergey E. Koposov, Carlos Allende Prieto, Christopher J. Manser, Namitha Kizhuprakkat, Adam D. Myers, Arjun Dey, Boris T. Gänsicke, Ting S. Li, Constance Rockosi, Monica Valluri, Joan Najita, Alis Deason, Anand Raichoor, M.-Y. Wang, Y.-S. Ting, Bokyoung Kim, Andreia Carrillo, Wenting Wang, Leandro Beraldo e Silva, Jiwon Jesse Han, Jiani Ding, Miguel Sánchez-Conde, Jessica N. Aguilar, Steven Ahlen, Stephen Bailey, Vasily Belokurov, David Brooks, Katia Cunha, Kyle Dawson, Axel de la Macorra, Peter Doel, Daniel J. Eisenstein, Parker Fagrelius, Kevin Fanning, Andreu Font-Ribera, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Julien Guy, Klaus Honscheid, Robert Kehoe, Theodore Kisner, Anthony Kremin, Martin Landriau, Michael E. Levi, Paul Martini, Aaron M. Meisner, Ramon Miquel, John Moustakas, Jundan J. D. Nie, Nathalie Palanque-Delabrouille, Will J. Percival, Claire Poppett, Francisco Prada, Nabeel Rehemtulla, Edward Schlafly, David Schlegel, Michael Schubnell, Ray M. Sharples, Gregory Tarlé, Risa H. Wechsler, David H. Weinberg, Zhimin Zhou, Hu Zou   +64 more
doaj   +1 more source

Simulated Milky Way analogues: implications for dark matter direct searches [PDF]

, 2016
We study the implications of galaxy formation on dark matter direct detection using high resolution hydrodynamic simulations of Milky Way-like galaxies simulated within the eagle and apostle projects.
A.J. Anderson, B. Feldstein, B. Feldstein, C. Dalla Vecchia ., C. Kelso, C.W. Purcell, C.W. Purcell, Carlos S. Frenk, E. Del Nobile, E. Del Nobile, E. Del Nobile, F. Calore ., F. Ferrer, F. Iocco, F. Nesti, F.S. Ling, Francesca Calore, G.B. Gelmini, Gianfranco Bertone, I. Butsky ., J. Bovy, J. Bovy, J. Kopp, J. Kopp, J.D. Sloane, J.F. Cherry, Joop Schaye, Julio F. Navarro, L. Zhang, M. Blennow, M. Fairbairn, M. Kuhlen, M. Kuhlen ., M. Pato, M.C. Smith, M.T. Busha, M.T. Frandsen, M.T. Frandsen, Mark Lovell, Matthieu Schaller, N. Bozorgnia, N. Bozorgnia, N. Bozorgnia, Nassim Bozorgnia, P. Gondolo, P.J. Fox, R. Catena, Robert A. Crain, T. Bruch, Tom Theuns, Y.-Y. Mao   +50 more
core   +5 more sources

Wormhole in the Milky Way galaxy with global monopole charge

European Physical Journal C: Particles and Fields, 2022
Wormholes are tunnels or short-cuts in space-time, and their existence is very important for human civilization to express the vastness of space and time. So, it is necessary to analyze our own Milky Way galaxy if it can harbour any wormhole.
Priyam Das, Mehedi Kalam
doaj   +1 more source

Constraining the Milky Way Dark Matter Density Profile with Gamma-Rays with Fermi-LAT [PDF]

, 2012
We study the abilities of the Fermi-LAT instrument on board of the Fermi mission to simultaneously constrain the Milky Way dark matter density profile and some dark matter particle properties, as annihilation cross section, mass and branching ratio into ...
Bernal, Nicolas, Palomares-Ruiz, Sergio
core   +1 more source