Puppis A

Database links to Puppis A

Puppis A
X-ray image of Puppis A: The three-color image of the Chandra X-ray telescope shows the X-ray energies 0.4-0.7 keV red, 0.7-1.2 keV green and 1.2-10 keV blue.
Constellation	Aft deck of the ship
Position equinox : J2000.0
Right ascension	08h 24m 07s
declination	-42 ° 59 ′ 48 ″
Further data
Angular expansion	1 °
distance	7,000 ly
Central star	RX J0822-4300
history
Catalog names
SNR G260.4-03.4 • 2U 0821-42 • CTA 46
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Puppis A is a supernova remnant in the constellation Puppis . It was created by a supernova explosion, the light of which reached Earth 3700 years ago. The supernova remnant appears to overlap with that of the Vela supernova , but is four times as far away.

Puppis A is one of the brightest celestial phenomena in the X-ray range . Observations with the X-ray satellite ROSAT made it possible to identify the neutron star created by the supernova from the previous star . This moves at a very high speed of 5 million kilometers per hour and is neither optically nor radio-astronomical detectable.

Observation history

Recording of the Wide-Field Infrared Survey Explorer (WISE)

Puppis A was observed as a radio source around 1950 . Shortly afterwards, a nebula could be assigned to the radio source in the optical range , and a similarity to Cassiopeia A was recognized. Due to the athermal radio emission and the visual appearance, Puppis A was identified as a supernova remnant in the late 1960s.

The X-ray emission from Puppis A was observed with sounding rockets in 1970 and 1971, the latter recorded as Puppis X-1 . An observation by the X-ray satellite Uhuru with the reference 2U 0821-42 was published in 1972.

Puppis A is the subject of a large number of studies. Investigations in the infrared range were carried out with the Spitzer and WISE space telescopes, for example . The latter shows almost the same structure as in the X-ray examinations and a clear contrast to the older Vela supernova .

Web links

Commons : Puppis A  - Collection of pictures, videos and audio files

• "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
• astronews.com: Picture of the day December 13, 2011

Individual evidence

1. ^ R. Petre, CM Becker, PF Winkler: A Central Stellar Remnant in Puppis A , bibcode : 1996ApJ ... 465L..43P
2. ^ GJ Stanley, OB Slee: Galactic Radiation at Radio Frequencies. II. The Discrete Sources , bibcode : 1950AuSRA ... 3..234S
3. ↑ Walter Baade , Rudolph Minkowski : Identification of the radio sources in Cassiopeia, Cygnus A, and Puppis A. , bibcode : 1954ApJ ... 119..206B
4. ^ A. Poveda, L. Woltjer: Supernovae and Supernova Remnants , bibcode : 1968AJ ..... 73 ... 65P
5. ^ FD Seward et al .: Soft X-Rays from Vela-X and Puppis A. , bibcode : 1971BAAS .... 3Q.393S
6. ↑ Wiggin M: The Dome on Ball Hill - The RAE Observatory (PDF; 1.8 MB) December 2000. Archived from the original on February 27, 2012. Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved July 24, 2012. 
7. ↑ Giacconi, R .; Murray, S .; Gursky, H .; Kellogg, E .; Schreier, E .; Tananbaum, H .: The Uhuru catalog of X-ray sources. bibcode : 1972ApJ ... 178..281G
8. ↑ Richard G. Arendt et al .: Spitzer Observations of Dust Destruction in the Puppis A Supernova Remnant , bibcode : 2010ApJ ... 725..585A