Puppis A
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| Puppis A | |
 X-ray image of the Cosmic Cannonball in Puppis A |
|
| Observation data (Epoch J2000) | |
|---|---|
| Supernova type | S |
| Remnant type | {{{SNRtype}}} |
| Host Galaxy | Milky Way |
| Constellation | Puppis |
| Right ascension | 08h 24m 07s |
| Declination | -42° 59' 48 |
| Galactic coordinates | l = 260.2°, b = -3.7° |
| Discovery Date | |
| Distance | 7.000 Ly |
| Physical characteristics | |
| Progenitor | Unknown |
| Progenitor type | Unknown |
| Colour (B-V) | Unknown |
| Notable features | central source: RX J0822-4300. |
Puppis A is a supernova remnant about 10 light-years in diameter, and one of the brightest sources in the X-ray sky. The supernova occurred approximately 3700 years ago. Its X-ray designation is 2U 0821-42.
A hypervelocity neutron star known as the Cosmic Cannonball has been found in this SNR traveling ~3 million miles per hour.
[edit] References
- "Puppis A: Chandra Reveals Cloud Disrupted By Supernova Shock", Chandra: NASA/CXC/GSFC/U.Hwang et al.; ROSAT: NASA/GSFC/S.Snowden et al., [1]
- Simbad
[edit] See also
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