Zobrazeno 1 - 10
of 385
pro vyhledávání: '"Smoot, George"'
In ultra-fast astronomical observations featuring fast transients on sub-$\mu$s time scales, the conventional Signal-to-Noise Ratio (SNR) threshold, often fixed at $5\sigma$, becomes inadequate as observational window timescales shorten, leading to u
Externí odkaz:
http://arxiv.org/abs/2409.15536
Autor:
Luu, Hoang Nhan, Mocz, Philip, Vogelsberger, Mark, Pozo, Alvaro, Broadhurst, Tom, Tye, S. -H. Henry, Liu, Tao, Fung, Leo W. H., Smoot, George F., Emami, Razieh, Hernquist, Lars
Fuzzy dark matter (FDM) is a compelling candidate for dark matter, offering a natural explanation for the structure of diffuse low-mass haloes. However, the canonical FDM model with a mass of $10^{-22}~{\rm eV}$ encounters challenges in reproducing t
Externí odkaz:
http://arxiv.org/abs/2408.00827
Autor:
Pozo, Alvaro, Broadhurst, Tom, Emami, Razieh, Mocz, Philip, Vogelsberger, Mark, Hernquist, Lars, Conselice, Christopher J., Luu, Hoang Nhan, Smoot, George F., Windhorst, Rogier
We compare the abundant prolate shaped galaxies reported beyond z$>$3 in deep JWST surveys, with the predicted {\it stellar} appearance of young galaxies in detailed hydro-simulations of three main dark matter contenders: Cold (CDM), Wave/Fuzzy ($\ps
Externí odkaz:
http://arxiv.org/abs/2407.16339
We explore the scales and the extent of disagreement between $Planck$ PR3 and Atacama Cosmology Telescope (ACT) DR4 data. $Planck$ and ACT data have substantial overlap in the temperature anisotropy data between scales corresponding to multipoles $\e
Externí odkaz:
http://arxiv.org/abs/2406.06296
Autor:
Broadhurst, Tom, Li, Sung Kei, Alfred, Amruth, Diego, Jose M., Morilla, Paloma, Kelly, Patrick L., Sun, Fengwu, Oguri, Masamune, Williams, Hayley, Windhorst, Rogier, Zitrin, Adi, Abe, Katsuya T., Chen, Wenlei, Fudamoto, Yoshinobu, Kawai, Hiroki, Lim, Jeremy, Liu, Tao, Meena, Ashish K., Palencia, Jose M., Smoot, George F., Williams, Liliya L. R.
Microlensed stars recently discovered by JWST & HST follow closely the winding critical curve of A370 along all sections of the ``Dragon Arc" traversed by the critical curve. These transients are fainter than $m_{AB}>26.5$, corresponding to the Asymp
Externí odkaz:
http://arxiv.org/abs/2405.19422
We show that by jointly fitting cosmic microwave background (CMB) and astrophysical data - a compilation of UV luminosity data from the Hubble Frontier Field and neutral hydrogen data from distant sources-, we can infer on the shape of the evolution
Externí odkaz:
http://arxiv.org/abs/2405.09506
Autor:
Barbosa, Domingos, Coelho, Bruno, Bergano, Miguel, Alves, Constança, Correia, Alexandre C. M., Cupido, Luís, Freitas, José, Gonçalves, Luís, Grossan, Bruce, Guerman, Anna, Almeida Jr., Allan K. de, Maia, Dalmiro, Morgado, Bruno, Pandeirada, João, Ribeiro, Valério, Rosa, Gonçalo, Smoot, George, Vaillant, Timothée, Villela, Thyrso, Wuensche, Carlos Alexandre
The Pampilhosa da Serra Space Observatory (PASO) is located in the center of the continental Portuguese territory, in the heart of a certified Dark Sky destination by the Starlight Foundation (Aldeias do Xisto) and has been an instrumental asset to a
Externí odkaz:
http://arxiv.org/abs/2404.04090
Autor:
Smoot, George F.
Explore alien solar systems via local star power using interstellar photovoltaics, tailored for the particular target star for maximum power and low mass. We consider tailored organic thin-film photovoltaics. Key for sensing, sending more data back a
Externí odkaz:
http://arxiv.org/abs/2401.06124
Publikováno v:
Universe 2023, 9, 501
One of main sources of uncertainty in modern cosmology is the present rate of the universe's expansion, H0, called the Hubble constant. Once again, different observational techniques bring about different results, causing new 'Hubble tension'. In the
Externí odkaz:
http://arxiv.org/abs/2311.07552
Autor:
Pozo, Alvaro, Emami, Razieh, Mocz, Philip, Broadhurst, Tom, Hernquist, Lars, Vogelsberger, Mark, Smith, Randall, Tremblay, Grant, Narayan, Ramesh, Steiner, James, Grindlay, Josh, Smoot, George
Dark matter-dominated cores have long been claimed for the well-studied local group dwarf galaxies. More recently, extended stellar halos have been uncovered around several of these dwarfs through deeper imaging and spectroscopy. Such core-halo struc
Externí odkaz:
http://arxiv.org/abs/2310.12217