Uses precision radio astrometry to constrain the motion of Sagittarius A*, supporting its identification with the Milky Way's central massive black hole.
Historical person
Mark Reid Biography
Historical biography and chronological timeline for Mark Reid, based on 2 World History Database records associated with United States of America.
2 records2009–20112 events0 places
Chronological biography
2009
Sagittarius A Star Proper Motion2009
2011
Cygnus X-1 Parallax2011
Measures the trigonometric parallax and proper motion of Cygnus X-1, enabling substantially improved estimates of the system's distance and black hole properties.
Titles and roles
Astronomer
Record provenance
This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.