Adriana Dropulic

Baryon-Accelerated Core Collapse in SIDM Halos and its Imprint on Galactic Disks

Zeineb Mezghanni, Elliot Y Davies, Adriana Dropulic, Gonzalo Herrera et autres

The gravitational coupling between dark matter (DM) halos and the baryonic structures they host is one of the most powerful windows into the particle nature of DM. Self-interacting dark matter (SIDM) presents a minimal, well-motivated extension to the dark sector with dramatic …

StreamGen: Connecting Populations of Streams and Shells to Their Host Galaxies

Adriana Dropulic, Nora Shipp, Stacy Y. Kim, Zeineb Mezghanni et autres

Abstract In this work, we study how the abundance and dynamics of populations of disrupting satellite galaxies change systematically as a function of host galaxy properties. We apply a theoretical model of the phase-mixing process to classify intact satellite galaxies and stellar …

Efficient and Accurate Force Replay in Cosmological-baryonic Simulations

Arpit Arora, Robyn E. Sanderson, Christopher Regan, Nicolás Garavito-Camargo et autres

Abstract We construct time-evolving gravitational potential models for a Milky Way–mass galaxy from the FIRE-2 suite of cosmological-baryonic simulations using basis function expansions. These models capture the angular variation with spherical harmonics for the halo and azimuthal harmonics for the disk, and …

StreamGen: Connecting Populations of Streams and Shells to Their Host Galaxies

Adriana Dropulic, Nora Shipp, Stacy Y. Kim, Zeineb Mezghanni et autres

In this work, we study how the abundance and dynamics of populations of disrupting satellite galaxies change systematically as a function of host galaxy properties. We apply a theoretical model of the phase-mixing process to classify intact satellite galaxies, stellar stream-like and …

Efficient and accurate force replay in cosmological-baryonic simulations

Arpit Arora, Robyn E. Sanderson, Christopher Regan, Nicolás Garavito-Camargo et autres

We construct time-evolving gravitational potential models for a Milky Way-mass galaxy from the FIRE-2 suite of cosmological-baryonic simulations using basis function expansions. These models capture the angular variation with spherical harmonics for the halo and azimuthal harmonics for the disk, and the …

Revealing the Milky Way’s most recent major merger with a Gaia EDR3 catalogue of machine-learned line-of-sight velocities

Adriana Dropulic, Hongwan Liu, Bryan Ostdiek, Mariangela Lisanti

ABSTRACT Machine learning can play a powerful role in inferring missing line-of-sight velocities from astrometry in surveys such as Gaia. In this paper, we apply a neural network to Gaia Early Data Release 3 (EDR3) and obtain line-of-sight velocities and associated uncertainties …

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Revealing the Milky Way's Most Recent Major Merger with a Gaia EDR3 Catalog of Machine-Learned Line-of-Sight Velocities

Adriana Dropulic, Hongwan Liu, Bryan Ostdiek, Mariangela Lisanti

Machine learning can play a powerful role in inferring missing line-of-sight velocities from astrometry in surveys such as Gaia. In this paper, we apply a neural network to Gaia Early Data Release 3 (EDR3) and obtain line-of-sight velocities and associated uncertainties for …

Gaia EDR3 Catalogs of Machine-Learned Radial Velocities

Adriana Dropulic, Hongwan Liu, Bryan Ostdiek, Mariangela Lisanti

Gaia EDR3 Catalogs of Machine-Learned Radial Velocities Spatially complete Test-Set and Machine-Learned Radial Velocity (ML-RV) Catalogs described in Dropulic et al., arXiv:2205.12278. The spatially complete Test-Set Catalog contains a total of 4,332,657 stars, while the spatially complete ML-RV Catalog contains 91,840,346 stars. …

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Gaia EDR3 Catalogs of Machine-Learned Radial Velocities

Adriana Dropulic, Hongwan Liu, Bryan Ostdiek, Mariangela Lisanti

Gaia EDR3 Catalogs of Machine-Learned Radial Velocities Spatially complete Test-Set and Machine-Learned Radial Velocity (ML-RV) Catalogs described in Dropulic et al., arXiv:2205.12278. The spatially complete Test-Set Catalog contains a total of 4,332,657 stars, while the spatially complete ML-RV Catalog contains 91,840,346 stars. …

us (code pays fourni par la source)

Angular analysis of the decay B$^+$ $\to$ K$^*$(892)$^+\mu^+\mu^-$ in proton-proton collisions at $\sqrt{s} =$ 8 TeV

Albert M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer et autres

Search for dark photons in Higgs boson production via vector boson fusion in proton-proton collisions at ?s = 13 TeV

CMS Collaboration, Albert M. Sirunyan, Natascha Krammer, Carsten Hensel et autres