Zobrazeno 1 - 10
of 432
pro vyhledávání: '"Buckley, Matthew"'
Cosmological first order phase transitions are typically associated with physics beyond the Standard Model, and thus of great theoretical and observational interest. Models of phase transitions where the energy is mostly converted to dark radiation c
Externí odkaz:
http://arxiv.org/abs/2402.13309
Autor:
McQuinn, Kristen B. W., Mao, Yao-Yuan, Tollerud, Erik J., Cohen, Roger E., Shih, David, Buckley, Matthew R., Dolphin, Andrew E.
We report the discovery of two ultra-faint dwarf galaxies, Leo M and Leo K, that lie outside the halo of the Milky Way. Using Hubble Space Telescope imaging of the resolved stars, we create color-magnitude diagrams reaching the old main sequence turn
Externí odkaz:
http://arxiv.org/abs/2307.08738
We present a novel, data-driven analysis of Galactic dynamics, using unsupervised machine learning -- in the form of density estimation with normalizing flows -- to learn the underlying phase space distribution of 6 million nearby stars from the Gaia
Externí odkaz:
http://arxiv.org/abs/2305.13358
Publikováno v:
Phys. Rev. D 109, 033006 (2024)
Simulating particle detector response is the single most expensive step in the Large Hadron Collider computational pipeline. Recently it was shown that normalizing flows can accelerate this process while achieving unprecedented levels of accuracy, bu
Externí odkaz:
http://arxiv.org/abs/2305.11934
Autor:
Pettee, Mariel, Thanvantri, Sowmya, Nachman, Benjamin, Shih, David, Buckley, Matthew R., Collins, Jack H.
Large-scale astrophysics datasets present an opportunity for new machine learning techniques to identify regions of interest that might otherwise be overlooked by traditional searches. To this end, we use Classification Without Labels (CWoLa), a weak
Externí odkaz:
http://arxiv.org/abs/2305.03761
Publikováno v:
JHEP 02 (2024) 029
Well-motivated models of dark matter often result in a population of electrons and positrons within galaxies produced through dark matter annihilation -- usually in association with gamma rays. As they diffuse through galactic magnetic fields, these
Externí odkaz:
http://arxiv.org/abs/2303.11354
We present an update to Via Machinae, an automated stellar stream-finding algorithm based on the deep learning anomaly detector ANODE. Via Machinae identifies stellar streams within Gaia, using only angular positions, proper motions, and photometry,
Externí odkaz:
http://arxiv.org/abs/2303.01529
Autor:
McQuinn, Kristen. B. W., Mao, Yao-Yuan, Buckley, Matthew R., Shih, David, Cohen, Roger E., Dolphin, Andrew E.
We report the discovery of an ultrafaint dwarf (UFD) galaxy, Pegasus W, located on the far side of the Milky Way-M31 system and outside the virial radius of M31. The distance to the galaxy is 915 (+60/-91) kpc, measured using the luminosity of horizo
Externí odkaz:
http://arxiv.org/abs/2301.04157
Cosmological N-body simulations of galaxies operate at the level of "star particles" with a mass resolution on the scale of thousands of solar masses. Turning these simulations into stellar mock catalogs requires "upsampling" the star particles into
Externí odkaz:
http://arxiv.org/abs/2211.11765
We investigate the sensitivity of a large, underground LArTPC-based neutrino detector to dark matter in the Galactic Center annihilating into neutrinos. Such a detector could have the ability to resolve the direction of the electron in a neutrino sca
Externí odkaz:
http://arxiv.org/abs/2210.04920