Search Results for author: Mariangela Lisanti

Found 7 papers, 1 papers with code

Cataloging Accreted Stars within Gaia DR2 using Deep Learning

no code implementations15 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.

Transfer Learning

Under the Firelight: Stellar Tracers of the Local Dark Matter Velocity Distribution in the Milky Way

no code implementations29 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

Dark Matter in Disequilibrium: The Local Velocity Distribution from SDSS-Gaia

no code implementations6 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

Mapping Extragalactic Dark Matter Annihilation with Galaxy Surveys: A Systematic Study of Stacked Group Searches

no code implementations1 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

A Search for Dark Matter Annihilation in Galaxy Groups

1 code implementation30 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

The Metal-Poor Stellar Halo in RAVE-TGAS and its Implications for the Velocity Distribution of Dark Matter

no code implementations11 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

The Poker Face of Inelastic Dark Matter: Prospects at Upcoming Direct Detection Experiments

no code implementations29 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

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