Zobrazeno 1 - 10
of 11 797
pro vyhledávání: '"Loeb, A. P."'
Autor:
Loeb, Abraham
I derive a lower limit on the mass of an Unidentified Flying Object (UFO) based on measurements of its speed and acceleration, as well as the infrared luminosity of the airglow around it. If the object's radial velocity can be neglected, the mass lim
Externí odkaz:
http://arxiv.org/abs/2412.12142
The Legacy Survey of Space and Time, to be conducted with the Vera C. Rubin Observatory, is poised to revolutionize our understanding of the Solar System by providing an unprecedented wealth of data on various objects, including the elusive interstel
Externí odkaz:
http://arxiv.org/abs/2412.02112
Autor:
Trivedi, Oem, Loeb, Abraham
Relations between the graviton mass and the cosmological constant $\Lambda$ have led to some interesting implications. We show that in any approach which leads to a direct correlation between the graviton mass and $\Lambda$, either through direct sub
Externí odkaz:
http://arxiv.org/abs/2411.12757
Autor:
Dominé, Laura, Biswas, Ankit, Cloete, Richard, Delacroix, Alex, Fedorenko, Andriy, Jacaruso, Lucas, Kelderman, Ezra, Keto, Eric, Little, Sarah, Loeb, Abraham, Masson, Eric, Prior, Mike, Schultz, Forrest, Szenher, Matthew, Watters, Wes, White, Abby
To date there is little publicly available scientific data on Unidentified Aerial Phenomena (UAP) whose properties and kinematics purportedly reside outside the performance envelope of known phenomena. To address this deficiency, the Galileo Project
Externí odkaz:
http://arxiv.org/abs/2411.07956
Autor:
Loeb, Abraham
The clustering dipole in the 2MASS galaxy survey converges on a scale of ~400Mpc to the local peculiar velocity inferred from the Cosmic-Microwave-Background dipole. I show that this limits the graviton mass in Yukawa theories of gravity to less than
Externí odkaz:
http://arxiv.org/abs/2411.01500
Autor:
De, Kishalay, MacLeod, Morgan, Jencson, Jacob E., Lovegrove, Elizabeth, Antoni, Andrea, Kara, Erin, Kasliwal, Mansi M., Lau, Ryan M., Loeb, Abraham, Masterson, Megan, Meisner, Aaron M., Panagiotou, Christos, Quataert, Eliot, Simcoe, Robert
Stellar mass black holes are formed from the terminal collapse of massive stars if the ensuing neutrino shock is unable to eject the stellar envelope. Direct observations of black hole formation remain inconclusive. We report observations of M31-2014
Externí odkaz:
http://arxiv.org/abs/2410.14778
Generative AI, particularly Language Models (LMs), has the potential to transform real-world domains with societal impact, particularly where access to experts is limited. For example, in education, training novice educators with expert guidance is i
Externí odkaz:
http://arxiv.org/abs/2410.03017
Autor:
MacLeod, Morgan, Blunt, Sarah, De Rosa, Robert J., Dupree, Andrea K., Granzer, Thomas, Harper, Graham M., Huang, Caroline D., Leiner, Emily M., Loeb, Abraham, Nielsen, Eric L., Strassmeier, Klaus G., Wang, Jason J., Weber, Michael
We examine a century of radial velocity, visual magnitude, and astrometric observations of the nearest red supergiant, Betelgeuse, in order to reexamine the century-old assertion that Betelgeuse might be a spectroscopic binary. These data reveal Bete
Externí odkaz:
http://arxiv.org/abs/2409.11332
Autor:
Loeb, Abraham
Publikováno v:
ApJL, 975, L15 (2024)
The Schwarzschild radii of primordial black holes (PBHs) in the mass range of 6x10^{14}g to 4x10^{19}g match the sizes of nuclei to atoms. I discuss the resulting quantum-mechanical suppression in the accretion of matter by PBHs in dense astrophysica
Externí odkaz:
http://arxiv.org/abs/2409.09081
Autor:
Padmanabhan, Hamsa, Loeb, Abraham
We use the inferred evolution of Lyman-$\alpha$ luminosities of galaxies in the redshift range of $z \sim 9-16$ from the ${James \ Webb \ Space \ Telescope}$ (JWST) data to predict the power spectrum of Loeb-Rybicki haloes formed by the scattering of
Externí odkaz:
http://arxiv.org/abs/2408.16820