PSR J1748−2446ad
 The location of PSR J1748-2446ad in the night sky. The pulsar is located in the center of the yellow square. It is too faint in this image to be visible against the background. Credit: GALEX GR6/7 Data Release | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 17h 48m 04.9s |
| Declination | −24° 46′ 04″ |
| Characteristics | |
| Spectral type | Pulsar |
| U−B color index | ? |
| B−V color index | ? |
| Variable type | None |
| Astrometry | |
| Distance | 18,000 Ly[1] |
| Details km | |
| Rotation | 0.00139595482(6) s 716.35556(3) Hz |
| Age | ≥2.5×107 years |
| Database references | |
| SIMBAD | data |
PSR J1748−2446ad is the fastest-spinning pulsar known, at 716 Hz (times per second),[2] or 43,000 revolutions per minute. This pulsar was discovered by Jason W. T. Hessels of McGill University on November 10, 2004, and confirmed on January 8, 2005.
If the neutron star is assumed to contain less than two times the mass of the Sun, within the typical range of neutron stars, its radius is constrained to be less than 16 km. At its equator it is spinning at approximately 24% of the speed of light, or over 70,000 km per second.
The pulsar is located in a
See also
- PSR J0901–4046 longest period pulsar known
- PSR J0952–0607 second-fastest-spinning pulsar known
References
External links
- XTE J1739−285, Integral points to the fastest spinning neutron star
- Evolution of millisecond pulsars
