Results 81 to 90 of about 1,672 (191)

No certainty of a Milky Way–Andromeda collision

It is commonly believed that our own Milky Way is on a collision course with the neighbouring Andromeda galaxy. As a result of their merger, predicted in around 5 billion years, the two large spiral galaxies that define the present Local Group would form
Deason, Alis J., Johansson, Peter H., Frenk, Carlos S., Rawlings, Alexander, Wright, Ruby, Sawala, Till, Häkkinen, Jenni, Delhomelle, Jehanne, Keitaanranta, Atte   +8 more
core   +2 more sources

Simulated Milky Way analogues: implications for dark matter indirect searches

, 2015
We study high-resolution hydrodynamic simulations of Milky Way type galaxies obtained within the “Evolution and Assembly of GaLaxies and their Environments” (EAGLE) project, and identify those that best satisfy observational constraints on the Milky Way ...
Crain, RA, Frenk, C.S., Bertone, G.; id_orcid, Bertone, G., Theuns, T., Calore, F, Frenk, CS, Trayford, JW, Trayford, J.W., Lovell, M, Schaller, M., Schaye, J, Lovell, M., Crain, R.A., Calore, F., Schaye, J., Navarro, J.F., Bozorgnia, N, Schaller, M, Bozorgnia, N., Theuns, T, Bertone, G, Lovell, M.R.   +22 more
core   +2 more sources

Sgr A* Spin and Mass Estimates through the Detection of Multiple Extremely Large Mass Ratio Inspirals

The Astrophysical Journal
We analyze the parameter estimation accuracy that can be achieved for the mass and spin of Sgr A*, the supermassive black hole in our Galactic center, by detecting multiple extremely large mass ratio inspirals (XMRIs).
Verónica Vázquez-Aceves, Yiren Lin, Alejandro Torres-Orjuela   +2 more
doaj   +1 more source

Solar and stellar photospheric abundances

Living Reviews in Solar Physics, 2016
The determination of photospheric abundances in late-type stars from spectroscopic observations is a well-established field, built on solid theoretical foundations.
Carlos Allende Prieto
doaj   +1 more source

The DREAMS Project: Disentangling the Impact of Halo-to-halo Variance and Baryonic Feedback on Milky Way Dark Matter Density Profiles

The Astrophysical Journal
In this work, we utilize a new suite of Milky Way–mass halos from the DREAMS Project, simulated with cold dark matter (CDM), to quantify the influence of baryon feedback and intrinsic halo-to-halo variance on dark matter density profiles.
Alex M. Garcia, Jonah C. Rose, Paul Torrey, Andrea Caputo, Mariangela Lisanti, Andrew B. Pace, Hongwan Liu, Abdelaziz Hussein, Haozhe Liu, Francisco Villaescusa-Navarro, John Barry, Ilem Leisher, Belén Costanza, Jonathan Kho, Ethan Lilie, Jiaxuan Li, Niusha Ahvazi, Aklant Bhowmick, Tri Nguyen, Stephanie O’Neil, Xiaowei Ou, Xuejian Shen, Arya Farahi, Nitya Kallivayalil, Lina Necib, Mark Vogelsberger   +25 more
doaj   +1 more source

Around The Way: Testing $\Lambda$CDM with Milky Way Stellar Stream Constraints

, 2018
International audienceRecent analyses of the Pal 5 and GD-1 tidal streams suggest that the inner dark matter halo of the Milky Way is close to spherical, in tension with predictions from collisionless N-body simulations of cosmological structure ...
Madau, Piero, Biwei Dai, Dai, Biwei, Robertson, Brant E., Piero Madau, Brant E. Robertson   +5 more
core   +1 more source

Milky Way satellite census. II. Galaxy-halo connection constraints including the impact of the Large Magellanic Cloud

, 2020
The population of Milky Way (MW) satellites contains the faintest known galaxies and thus provides essential insight into galaxy formation and dark matter microphysics.
Dodelson, S., Allam, S., McNanna, M., Brooks, D., Mao, Y-Y, Green, G., Costanzi, M., Bertin, E., Carretero, J., Wechsler, R. H., da Costa, L. N., Kravtsov, A., Avila, S., Desai, S., Nadler, E. O., Kind, M. Carrasco, Li, T. S., Bernstein, G. M., Bechtol, K., Annis, J., Riley, A. H., Drlica-Wagner, A., Wang, M. Y., Rosell, A. Carnero, Simon, J. D., Aguena, M., Burke, D. L., Pace, A. B., De Vicente, J., Mau, S., Abbott, T. M. C.   +30 more
core   +1 more source

Asymmetry between Galaxy Apparent Magnitudes Shows a Possible Tension between Physical Properties of Galaxies and Their Rotational Velocity

, 2023
Despite over a century of research, the physics of galaxy rotation is not yet fully understood, and there is a clear discrepancy between the observed mass of galaxies and their rotational velocity.
Darius McAdam, Lior Shamir
core   +1 more source

Dissipative Dark Matter on FIRE. II. Observational Signatures and Constraints from Local Dwarf Galaxies

The Astrophysical Journal
We analyze the first cosmological baryonic zoom-in simulations of galaxies in dissipative self-interacting dark matter (dSIDM). The simulations utilize the FIRE-2 galaxy formation physics with the inclusion of dissipative dark matter self-interactions ...
Xuejian Shen, Philip F. Hopkins, Lina Necib, Fangzhou Jiang, Michael Boylan-Kolchin, Andrew Wetzel   +5 more
doaj   +1 more source

On the dark matter distribution in the Milky Way

, 2016
The distribution of dark matter in the Milky Way is a crucial input for ongoing studies in cosmology, astrophysics and particle physics. This motivates the effort over the next years to improve our mapping of dark matter, which has indeed become a top ...
Iocco F., Pato, Miguel, Pato M., Iocco, Fabio [UNESP]   +3 more
core   +1 more source