Puppis A
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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.
A hypervelocity neutron star known as the Cosmic Cannonball has been found in this SNR.
Puppis X-1
Puppis X-1 (Puppis A) was discovered by a Skylark flight in October 1971, viewed for 1 min with an accuracy ≥ 2 arcsec,[3] probably at 1M 0821-426, with Puppis A (RA 08h 23m 08.16s Dec -42° 41′ 41.40″) as the likely visual counterpart.
Puppis A is one of the brightest X-ray sources in the X-ray sky. Its X-ray designation is 2U 0821-42.
Gallery
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wide-field composite view of the supernova remnant Puppis A (X-rays from ROSAT in purple, optical data in pink) (28 November 2007)
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Puppis A: X-ray [blue:0.3-8 keV] + IR [red-green:24-70 microns] (21 August 2014).
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Puppis A: X-ray [blue:high]/[green:medium]/[red:low] (10 September 2014).
![Puppis A: X-ray [blue:0.3-8 keV] + IR [red-green:24-70 microns] (21 August 2014).](/wiki143/index.php?title=File:PIA18468-SuperNova-PuppisA-XRayIR-20140821.jpg){kind=link}
References
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See also
External links
- Chandra: Puppis A, date: 10 September 2014, retrieved 4 March 2025
- Puppis A: Chandra Reveals Cloud Disrupted By Supernova Shock, Chandra: NASA/CXC/GSFC/U.Hwang et al.; ROSAT: NASA/GSFC/S.Snowden et al.,
- Simbad