![]() Animated astrometric observations of the
gravitational microlensing of OGLE-2011-BLG-0462/MOA-2011-BLG-191 | |
Object type | black hole |
---|---|
Other designations | MOA-2011-BLG-191 |
Observation data ( Epoch 2455874.50236 (2011-11-09.00 UT)) | |
Constellation |
Sagittarius
![]() |
J2000.0 (17:51:40.19) | |
Declination | J2000.0 (-29:53:26.3) |
Distance | 5,610 ly (1,720 pc) |
Mass | 6.03 M☉ |
![]() | |
OGLE-2011-BLG-0462, also known as MOA-2011-BLG-191, is a stellar-mass black hole isolated in interstellar space. OGLE-2011-BLG-0462 lies at a distance of 1,720 parsecs (5,610 light years) in the direction of the galactic bulge in the constellation Sagittarius. The black hole has a mass of about 6.03 M☉. [1] OGLE-2011-BLG-0462 is the first truly isolated black hole which has been confirmed. [2] [3] [4]
OGLE-2011-BLG-0462 was discovered through microlensing when it passed in front of a background star that was 20,000 light years away from Earth. The black hole's gravity bent the star's light, causing a sharp spike in brightness that was detected by the Hubble Space Telescope. It took six years to confirm the existence of OGLE-2011-BLG-0462. Its initial kick velocity has been estimated to have an upper limit of 100 km/s. [5] [6] No significant X-ray emission has been detected from gas accreting onto the black hole indicating that it is truly isolated. [7]
![]() Animated astrometric observations of the
gravitational microlensing of OGLE-2011-BLG-0462/MOA-2011-BLG-191 | |
Object type | black hole |
---|---|
Other designations | MOA-2011-BLG-191 |
Observation data ( Epoch 2455874.50236 (2011-11-09.00 UT)) | |
Constellation |
Sagittarius
![]() |
J2000.0 (17:51:40.19) | |
Declination | J2000.0 (-29:53:26.3) |
Distance | 5,610 ly (1,720 pc) |
Mass | 6.03 M☉ |
![]() | |
OGLE-2011-BLG-0462, also known as MOA-2011-BLG-191, is a stellar-mass black hole isolated in interstellar space. OGLE-2011-BLG-0462 lies at a distance of 1,720 parsecs (5,610 light years) in the direction of the galactic bulge in the constellation Sagittarius. The black hole has a mass of about 6.03 M☉. [1] OGLE-2011-BLG-0462 is the first truly isolated black hole which has been confirmed. [2] [3] [4]
OGLE-2011-BLG-0462 was discovered through microlensing when it passed in front of a background star that was 20,000 light years away from Earth. The black hole's gravity bent the star's light, causing a sharp spike in brightness that was detected by the Hubble Space Telescope. It took six years to confirm the existence of OGLE-2011-BLG-0462. Its initial kick velocity has been estimated to have an upper limit of 100 km/s. [5] [6] No significant X-ray emission has been detected from gas accreting onto the black hole indicating that it is truly isolated. [7]