SGR J1745−2900
Image of SGR J1745−2900 produced by the Chandra X-ray Observatory | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 17h 45m 40.21s |
| Declination | −29° 00′ 29.2″ |
| Apparent magnitude (V) | ? |
| Other designations | |
| PSR J1745−2900 | |
| Database references | |
| SIMBAD | data |
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. 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, which is also a pulsar, is 0.33 ly from the central black hole.
The object helps researchers probe the ionized interstellar medium (ISM) toward the Galactic Center (GC), and could be useful in testing quantum gravity effects.