Zobrazeno 1 - 10
of 431
pro vyhledávání: '"Sakai, Shoko"'
Autor:
Gautam, Abhimat K., Do, Tuan, Ghez, Andrea M., Chu, Devin S., Hosek Jr., Matthew W., Sakai, Shoko, Naoz, Smadar, Morris, Mark R., Ciurlo, Anna, Haggard, Zoe, Lu, Jessica R.
We present the first estimate of the intrinsic binary fraction of young stars across the central $\approx$ 0.4 pc surrounding the supermassive black hole (SMBH) at the Milky Way Galactic center (GC). This experiment searched for photometric variabili
Externí odkaz:
http://arxiv.org/abs/2401.12555
Autor:
Weldon, Grant C., Do, Tuan, Witzel, Gunther, Ghez, Andrea M., Gautam, Abhimat K., Becklin, Eric E., Morris, Mark R., Martinez, Gregory D., Sakai, Shoko, Lu, Jessica R., Matthews, Keith, Hosek Jr., Matthew W., Haggard, Zoë
Sgr A* is the variable electromagnetic source associated with accretion onto the Galactic center supermassive black hole. While the near-infrared (NIR) variability of Sgr A* was shown to be consistent over two decades, unprecedented activity in 2019
Externí odkaz:
http://arxiv.org/abs/2308.09749
Infrared observations of stellar orbits about Sgr A* probe the mass distribution in the inner parsec of the Galaxy and provide definitive evidence for the existence of a massive black hole. However, the infrared astrometry is relative and is tied to
Externí odkaz:
http://arxiv.org/abs/2308.03147
Autor:
Chu, Devin S., Do, Tuan, Ghez, Andrea, Gautam, Abhimat K., Ciurlo, Anna, O'Neil, Kelly Kosmo, Hosek Jr., Matthew W., Hees, Aurélien, Naoz, Smadar, Sakai, Shoko, Lu, Jessica R., Chen, Zhuo, Bentley, Rory O., Becklin, Eric E., Matthews, Keith
We present the results of the first systematic search for spectroscopic binaries within the central 2 x 3 arcsec$^2$ around the supermassive black hole at the center of the Milky Way galaxy. This survey is based primarily on over a decade of adaptive
Externí odkaz:
http://arxiv.org/abs/2303.16977
Autor:
Ciurlo, Anna, Campbell, Randall D., Morris, Mark R., Do, Tuan, Ghez, Andrea M., Becklin, Eric E., Bentley, Rory O., Chu, Devin S., Gautam, Abhimat K., Gursahani, Yash A., Hees, Aurelien, O'Neil, Kelly Kosmo, Lu, Jessica R., Martinez, Gregory D., Naoz, Smadar, Sakai, Shoko, Schoedel, Rainer
We present two decades of new high-angular-resolution near-infrared data from the W. M. Keck Observatory that reveal extreme evolution in X7, an elongated dust and gas feature, presently located half an arcsecond from the Galactic Center supermassive
Externí odkaz:
http://arxiv.org/abs/2301.06562
Autor:
Martínez-Núñez, Carlos, Sakai, Shoko
Publikováno v:
In Ecological Indicators June 2024 163
Akademický článek
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Akademický článek
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Autor:
Do, Tuan, Witzel, Gunther, Gautam, Abhimat K., Chen, Zhuo, Ghez, Andrea M., Morris, Mark R., Becklin, Eric E., Ciurlo, Anna, Hosek Jr., Matthew, Martinez, Gregory D., Matthews, Keith, Sakai, Shoko, Schödel, Rainer
The electromagnetic counterpart to the Galactic center supermassive black hole, Sgr A*, has been observed in the near-infrared for over 20 years and is known to be highly variable. We report new Keck Telescope observations showing that Sgr A* reached
Externí odkaz:
http://arxiv.org/abs/1908.01777
Autor:
Do, Tuan, Hees, Aurelien, Ghez, Andrea, Martinez, Gregory D., Chu, Devin S., Jia, Siyao, Sakai, Shoko, Lu, Jessica R., Gautam, Abhimat K., O'Neil, Kelly Kosmo, Becklin, Eric E., Morris, Mark R., Matthews, Keith, Nishiyama, Shogo, Campbell, Randy, Chappell, Samantha, Chen, Zhuo, Ciurlo, Anna, Dehghanfar, Arezu, Gallego-Cano, Eulalia, Kerzendorf, Wolfgang E., Lyke, James E., Naoz, Smadar, Saida, Hiromi, Schödel, Rainer, Takahashi, Masaaki, Takamori, Yohsuke, Witzel, Gunther, Wizinowich, Peter
General Relativity predicts that a star passing close to a supermassive black hole should exhibit a relativistic redshift. We test this using observations of the Galactic center star S0-2. We combine existing spectroscopic and astrometric measurement
Externí odkaz:
http://arxiv.org/abs/1907.10731