SGR J1745−2900, or PSR J1745−2900, is the first-discovered magnetar orbiting the black hole Sagittarius A*, in the center of the Milky Way.[1][2] The magnetar was discovered in 2013 using the Effelsberg 100-m Radio Telescope, the Nancay Decimetric Radio Telescope, and the Jodrell Bank Lovell Telescope. The magnetar has a period of 3.76 s and a magnetic flux density of ∼ 1010 T (1014 G). The magnetar is 0.33 ly from the central black hole.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 17h 45m 40.16s |
| Declination | −29° 00' 29.8"' |
| Apparent magnitude (V) | ? |
| Database references | |
| SIMBAD | data |
| Other designations | |
PSR J1745−2900 | |
The object offers an unparalleled tool for probing the ionized interstellar medium (ISM) toward the Galactic Center (GC),[3] and a possible way to test quantum gravity effects.[4]