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Puppis A
Supernova remnant / From Wikipedia, the free encyclopedia
Puppis A (Pup A) is a supernova remnant (SNR) about 100 light-years in diameter and roughly 6500–7000 light-years distant.[1] Its apparent angular diameter is about 1 degree.[2] The light of the supernova explosion reached Earth approximately 3700 years ago. Although it overlaps the Vela Supernova Remnant, it is four times more distant.
Quick Facts Event type, Date ...
![]() The Chandra three-color image (inset) is a region of the supernova remnant Puppis A (wide-angle view from ROSAT in blue) which reveals a cloud being torn apart by a shock wave produced in a supernova explosion. ROSAT image is 88 arcmin across; Chandra image 8 arcmin across. RA 08h 23m 08.16s Dec -42° 41′ 41.40″ in Puppis. Observation date: September 4, 2005. Color code: Energy (Red 0.4-0.7 keV; Green 0.7-1.2 keV; Blue 1.2-10 keV). Instrument: ACIS. Credit: Chandra: NASA/CXC/GSFC/U.Hwang et al.; ROSAT: NASA/GSFC/S.Snowden et al. | |
Event type | Supernova remnant ![]() |
---|---|
S | |
Date | 1971 |
Constellation | Puppis |
Right ascension | 08h 24m 07s |
Declination | -42° 59' 48 |
Epoch | J2000 |
Galactic coordinates | l = 260.2°, b = -3.7° |
Distance | 7,000 ly |
Host | Milky Way |
Progenitor | Unknown |
Progenitor type | Unknown |
Colour (B-V) | Unknown |
Notable features | central source: RX J0822-4300. Apparent size: 1° |
Other designations | SNR G260.4-03.4, MRC 0821-428, 3FHL J0822.1-4253e, 2U 0821-42, 3A 0821-427, 3U 0821-42, 4U 0821-42, AJG 6, INTREF 352, MSH 08-4-04, PKS 0822-42, PKS 0822-428, PKS J0824-4259, 2FGL J0823.0-4246, 3FGL J0822.6-4250e, 2FHL J0822.6-4250e |
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A hypervelocity neutron star known as the Cosmic Cannonball has been found in this SNR.