Puppis A
Encyclopedia
Puppis A is a supernova remnant
(SNR) about 10 light-years in diameter. The supernova 'occurred' (ie. would have been seen on 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 traveling ~5 million kilometers per hour.
flight in October 1971, viewed for 1 min with an accuracy ≥ 2 arcsec, probably at 1M 0821-426, with Puppis A (RA
08h 23m 08.16s Dec
-42º 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.
Supernova remnant
A supernova remnant is the structure resulting from the explosion of a star in a supernova. The supernova remnant is bounded by an expanding shock wave, and consists of ejected material expanding from the explosion, and the interstellar material it sweeps up and shocks along the way.There are two...
(SNR) about 10 light-years in diameter. The supernova 'occurred' (ie. would have been seen on earth) approximately 3700 years ago. Although it overlaps the Vela Supernova Remnant
Vela Supernova Remnant
The Vela supernova remnant is a supernova remnant in the southern constellation Vela. Its source supernova exploded approximately 11,000-12,300 years ago...
, it is four times more distant.
A hypervelocity neutron star
Neutron star
A neutron star is a type of stellar remnant that can result from the gravitational collapse of a massive star during a Type II, Type Ib or Type Ic supernova event. Such stars are composed almost entirely of neutrons, which are subatomic particles without electrical charge and with a slightly larger...
known as the Cosmic Cannonball
RX J0822-4300
|- style="vertical-align: top;"| Distance | 7.000 Ly|- style="vertical-align: top;"| Galactic coordinates | 260.3841 -03.4718...
has been found in this SNR traveling ~5 million kilometers per hour.
Puppis X-1
Puppis X-1 (Puppis A) was discovered by a SkylarkSkylark (rocket)
Skylark was a British sounding rocket design. The Skylark was first launched in 1957 from Woomera, Australia and its 441st and final launch took place from Esrange, Sweden on 2 May 2005...
flight in October 1971, viewed for 1 min with an accuracy ≥ 2 arcsec, probably at 1M 0821-426, with Puppis A (RA
RA
RA may refer to:- Science :* Right ascension, an astronomical term* Relation algebra, a type of mathematical structure- Medicine :* Relative analgesia machine, a type of sedative* Right atrium, one of the four chambers of the heart...
08h 23m 08.16s Dec
Dec
DEC, dec or Dec may refer to:Places* Deč, a village in Serbia* Decatur Airport, Decatur, Illinois * Derwent Entertainment Centre, an entertainment centre in Hobart, Australia...
-42º 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.