Zobrazeno 1 - 10
of 153
pro vyhledávání: '"Necib, Lina"'
Autor:
Dropulic, Adriana, Shipp, Nora, Kim, Stacy, Mezghanni, Zeineb, Necib, Lina, Lisanti, Mariangela
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
Externí odkaz:
http://arxiv.org/abs/2409.13810
Autor:
Nguyen, Tri, Villaescusa-Navarro, Francisco, Mishra-Sharma, Siddharth, Cuesta-Lazaro, Carolina, Torrey, Paul, Farahi, Arya, Garcia, Alex M., Rose, Jonah C., O'Neil, Stephanie, Vogelsberger, Mark, Shen, Xuejian, Roche, Cian, Anglés-Alcázar, Daniel, Kallivayalil, Nitya, Muñoz, Julian B., Cyr-Racine, Francis-Yan, Roy, Sandip, Necib, Lina, Kollmann, Kassidy E.
The connection between galaxies and their host dark matter (DM) halos is critical to our understanding of cosmology, galaxy formation, and DM physics. To maximize the return of upcoming cosmological surveys, we need an accurate way to model this comp
Externí odkaz:
http://arxiv.org/abs/2409.02980
Autor:
Folsom, Dylan, Lisanti, Mariangela, Necib, Lina, Horta, Danny, Vogelsberger, Mark, Hernquist, Lars
Observations of the Milky Way's stellar halo find that it is predominantly comprised of a radially-biased population of stars, dubbed the Gaia Sausage--Enceladus, or GSE. These stars are thought to be debris from dwarf galaxy accretion early in the M
Externí odkaz:
http://arxiv.org/abs/2408.02723
Autor:
Arora, Arpit, Sanderson, Robyn E., Chakrabarti, Sukanya, Wetzel, Andrew, Donlon II, Thomas, Horta, Danny, Loebman, Sarah R., Necib, Lina, Oeur, Micah
Measurements of the accelerations of stars enabled by time-series extreme-precision spectroscopic observations, from pulsar timing, and from eclipsing binary stars in the Solar Neighborhood offer insights into the mass distribution of the Milky Way t
Externí odkaz:
http://arxiv.org/abs/2406.12957
Autor:
Rose, Jonah C., Torrey, Paul, Villaescusa-Navarro, Francisco, Lisanti, Mariangela, Nguyen, Tri, Roy, Sandip, Kollmann, Kassidy E., Vogelsberger, Mark, Cyr-Racine, Francis-Yan, Medvedev, Mikhail V., Genel, Shy, Anglés-Alcázar, Daniel, Kallivayalil, Nitya, Wang, Bonny Y., Costanza, Belén, O'Neil, Stephanie, Roche, Cian, Karmakar, Soumyodipta, Garcia, Alex M., Low, Ryan, Lin, Shurui, Mostow, Olivia, Cruz, Akaxia, Caputo, Andrea, Farahi, Arya, Muñoz, Julian B., Necib, Lina, Teyssier, Romain, Dalcanton, Julianne J., Spergel, David
We introduce the DREAMS project, an innovative approach to understanding the astrophysical implications of alternative dark matter models and their effects on galaxy formation and evolution. The DREAMS project will ultimately comprise thousands of co
Externí odkaz:
http://arxiv.org/abs/2405.00766
Autor:
Sands, Isabel S., Hopkins, Philip F., Shen, Xuejian, Boylan-Kolchin, Michael, Bullock, James, Faucher-Giguere, Claude-Andre, Mercado, Francisco J., Moreno, Jorge, Necib, Lina, Ou, Xiaowei, Wellons, Sarah, Wetzel, Andrew
While galaxy rotation curves provide one of the most powerful methods for measuring dark matter profiles in the inner regions of rotation-supported galaxies, at the dwarf scale there are factors that can complicate this analysis. Given the expectatio
Externí odkaz:
http://arxiv.org/abs/2404.16247
Autor:
Ou, Xiaowei, Chiti, Anirudh, Shipp, Nora, Simon, Joshua D., Geha, Marla, Frebel, Anna, Mardini, Mohammad K., Erkal, Denis, Necib, Lina
The Hercules ultra-faint dwarf galaxy (UFD) has long been hypothesized to be tidally disrupting, yet no conclusive evidence has been found for tidal disruption owing partly to difficulties in identifying Hercules member stars. In this work, we presen
Externí odkaz:
http://arxiv.org/abs/2403.00921
The escape velocity profile of the Milky Way offers a crucial and independent measurement of its underlying mass distribution and dark matter properties. Using a sample of stars from Gaia DR3 with 6D kinematics and strict quality cuts, we obtain an e
Externí odkaz:
http://arxiv.org/abs/2402.00108
Autor:
Horta, Danny, Cunningham, Emily C., Sanderson, Robyn, Johnston, Kathryn V., Deason, Alis, Wetzel, Andrew, McCluskey, Fiona, Garavito-Camargo, Nicolás, Necib, Lina, Faucher-Giguère, Claude-André, Arora, Arpit, Gandhi, Pratik J.
Observational studies are finding stars believed to be relics of the earliest stages of hierarchical mass assembly of the Milky Way (i.e., proto-Galaxy). In this work, we contextualize these findings by studying the masses, ages, spatial distribution
Externí odkaz:
http://arxiv.org/abs/2307.15741
Autor:
Croon, Djuna, Fox, Patrick J., Harnik, Roni, Knapen, Simon, Lisanti, Mariangela, Necib, Lina, Yu, Tien-Tien
We present the results of a survey meant to assess the opinion of the high-energy physics theory (HET) community on the January 7th postdoc acceptance deadline - specifically, whether there is a preference to shift the deadline to later in January or
Externí odkaz:
http://arxiv.org/abs/2307.02683