Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Alfred Amruth"'
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
Autor:
Li, Sung Kei, Diego, Jose M., Kelly, Patrick L., Lim, Jeremy, Chen, WenLei, Alfred, Amruth, Williams, Liliya L. R., Broadhurst, Thomas J., Meena, Ashish. K., Zitrin, Adi, Chow, Alex
We report the discovery of transients among star clusters in a distant galaxy that is gravitationally lensed by a foreground galaxy cluster, and explore whether these transients correspond to: (i) intrinsic variations associated with stellar outburst
Externí odkaz:
http://arxiv.org/abs/2404.08571
Autor:
Kelly, Patrick L., Chen, Wenlei, Alfred, Amruth, Broadhurst, Thomas J., Diego, Jose M., Emami, Najmeh, Filippenko, Alexei V., Keen, Allison, Li, Sung Kei, Lim, Jeremy, Meena, Ashish K., Oguri, Masamune, Scarlata, Claudia, Treu, Tommaso, Williams, Hayley, Williams, Liliya L. R., Zhou, Rui, Zitrin, Adi, Foley, Ryan J., Jha, Saurabh W., Kaiser, Nick, Mehta, Vihang, Rieck, Steven, Salo, Laura, Smith, Nathan, Weisz, Daniel R.
Once only accessible in nearby galaxies, we can now study individual stars across much of the observable universe aided by galaxy-cluster gravitational lenses. When a star, compact object, or multiple such objects in the foreground galaxy-cluster len
Externí odkaz:
http://arxiv.org/abs/2211.02670
Autor:
Meena, Ashish Kumar, Chen, Wenlei, Zitrin, Adi, Kelly, Patrick L., Golubchik, Miriam, Zhou, Rui, Alfred, Amruth, Broadhurst, Tom, Diego, Jose M., Oguri, Masamune, Williams, Liliya L. R., Filippenko, Alexei V., Li, Sung Kei
We report the discovery of a transient seen in a strongly lensed arc at redshift $z_{\rm s}=1.2567$ in \emph{Hubble Space Telescope} imaging of the Abell 370 galaxy cluster. The transient is detected at $29.51\pm0.14$ AB mag in a WFC3/UVIS F200LP dif
Externí odkaz:
http://arxiv.org/abs/2211.01402
Autor:
Liliya L. R. Williams, Patrick L. Kelly, Tommaso Treu, Alfred Amruth, Jose M. Diego, Sung Kei Li, Ashish K. Meena, Adi Zitrin, Thomas J. Broadhurst, Alexei V. Filippenko
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 200 (2024)
Dark matter subhalos with extended profiles and density cores, and globular star clusters of mass 10 ^6 –10 ^8 M _⊙ that live near the critical curves in galaxy cluster lenses can potentially be detected through their lensing magnification of sta
Externí odkaz:
https://doaj.org/article/c856a0d19ea24266be2403e771d65819
Akademický článek
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Autor:
Alfred Amruth, Tom Broadhurst, Jeremy Lim, Masamune Oguri, George F. Smoot, Jose M. Diego, Enoch Leung, Razieh Emami, Juno Li, Tzihong Chiueh, Hsi-Yu Schive, Michael C. H. Yeung, Sung Kei Li
Publikováno v:
Nature Astronomy.
Autor:
Meena, Ashish Kumar, Chen, Wenlei, Zitrin, Adi, Kelly, Patrick L, Golubchik, Miriam, Zhou, Rui, Alfred, Amruth, Broadhurst, Tom, Diego, Jose M, Filippenko, Alexei V, Li, Sung Kei, Oguri, Masamune, Smith, Nathan, Williams, Liliya L R
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jun2023, Vol. 521 Issue 4, p5224-5231, 8p
Publikováno v:
The Astrophysical Journal. 925:61
Fuzzy dark matter (FDM), a scalar particle coupled to the gravitational field without self-interaction whose mass range is $m \sim 10^{-24} - 10^{-20}\ \rm{eV}$, is one of the promising alternative dark matter candidates to cold dark matter. The quan
Autor:
Callaghan, Jonathan (AUTHOR)
Publikováno v:
New Scientist. 12/2/2023, Vol. 260 Issue 3467, p32-35. 4p. 3 Color Photographs.