no code implementations • 15 Jul 2019 • Bryan Ostdiek, Lina Necib, Timothy Cohen, Marat Freytsis, Mariangela Lisanti, Shea Garrison-Kimmel, Andrew Wetzel, Robyn E. Sanderson, Philip F. Hopkins
The goal of this study is to present the development of a machine learning based approach that utilizes phase space alone to separate the Gaia DR2 stars into two categories: those accreted onto the Milky Way from those that are in situ.
no code implementations • 29 Oct 2018 • Lina Necib, Mariangela Lisanti, Shea Garrison-Kimmel, Andrew Wetzel, Robyn Sanderson, Philip F. Hopkins, Claude-André Faucher-Giguère, Dušan Kereš
Based on results from Gaia, we estimate that $42 ^{+26}_{-22}\%$ of the local dark matter that is accreted from luminous mergers is in debris flow.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
no code implementations • 6 Jul 2018 • Lina Necib, Mariangela Lisanti, Vasily Belokurov
If so, our results indicate that the majority of the local dark matter that is sourced by luminous satellites is in kinematic substructure referred to as debris flow.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
no code implementations • 1 Sep 2017 • Mariangela Lisanti, Siddharth Mishra-Sharma, Nicholas L. Rodd, Benjamin R. Safdi, Risa H. Wechsler
Applying this procedure to a catalog of sources, one can create a full-sky map of the brightest extragalactic dark matter targets in the nearby Universe ($z\lesssim 0. 03$), supplementing sources of dark matter annihilation from within the Local Group.
Cosmology and Nongalactic Astrophysics High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
1 code implementation • 30 Aug 2017 • Mariangela Lisanti, Siddharth Mishra-Sharma, Nicholas L. Rodd, Benjamin R. Safdi
We use 413 weeks of publicly-available $\textit{Fermi}$ Pass 8 gamma-ray data, combined with recently-developed galaxy group catalogs, to search for evidence of dark matter annihilation in extragalactic halos.
Cosmology and Nongalactic Astrophysics High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
no code implementations • 11 Aug 2017 • Jonah Herzog-Arbeitman, Mariangela Lisanti, Lina Necib
The local velocity distribution of dark matter plays an integral role in interpreting the results from direct detection experiments.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
no code implementations • 29 May 2010 • Daniele S. M. Alves, Mariangela Lisanti, Jay G. Wacker
The XENON100 and CRESST experiments will directly test the inelastic dark matter explanation for DAMA's 8. 9?
High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics