NOAO >   Observing Info >   Approved Programs >   2018A-0284

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Program Information for 2018A-0284


PI: Tuan Do, UCLA, tdo@astro.ucla.edu
Address: Department of Physics and Astronomy, 8371 Math Sciences, Los Angeles, CA, 90095-1562 USA

CoI: Andrea Ghez, UCLA
CoI: Mark Morris, UCLA
CoI: Aurelien Hees, UCLA
CoI: Kristian Finlator, UCLA
CoI: Jessica Lu, UC Berkeley
CoI: Aurelien Hees, UCLA
CoI: Keith Matthews, California Institute of Technology
CoI: Anna Ciurlo, UCLA
CoI: Gregory Martinez, UCLA
CoI: Gunther Witzel, UCLA
CoI: Devin Chu, UCLA
CoI: Sam Chappell, UCLA
CoI: Abhimat Gautam, UCLA
CoI: Zhuo Chen, UCLA
CoI: Siyao Jia, UC Berkeley
CoI: Arezu Dehghanfar, UCLA
CoI: Kelly Kosmo, UCLA

Title: Measuring the Relativistic Redshift of the Star S0-2 in Orbit Around the MW Supermassive Black Hole with NIFS

Abstract: The 2018A semester presents an exciting opportunity for testing Einstein's theory of general relativity in an important and unexplored regime - within the vicinity of a supermassive black hole. This is enabled because, in 2018, the Galactic center star S0-2 will undergo its closest approach to our Galaxy's central supermassive black hole (traveling at a peak absolute speed of 8,000 km/sec and changing its radial velocity by more than 6,000 km/sec over just a few months). This is the first and only star that can test relativity in the vicinity of SMBH for the foreseeable future and this event will not occur again for another 16 years. We, therefore, propose a carefully optimized series of spectroscopic measurements of S0-2 that will measure, for the first time, the effects of relativistic redshift on its orbit relative to the predictions of Newtonian gravity.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2018A):  GEM-NQ/NIFS -- 36.2hrs band 1 (GN-2018A-Q-123 )


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2018A-0284

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