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CTB 1, also known as G116.9+00.1 and AJG 110, [1] nicknamed the Medulla Nebula, [2] is a supernova remnant located in the constellation Cassiopeia. It was discovered as a radio source in 1960 in a study of galactic radiation carried out at a frequency of 960 MHz.
List of all known (extra)galactic supernova remnants at The Open Supernova Catalog Archived 2016-03-03 at the Wayback Machine. Chandra Galactic SNR gallery; SNRcat, the online high-energy catalogue of supernova remnants
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SN 1054 remnant (Crab Nebula).. A supernova remnant (SNR) 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.
IRAS 00500+6713 is the catalogued infrared source for an unusual nebula in Cassiopeia, while the central star has a designation WD J005311, with the whole system designated as Pa 30. The central star and its surrounding shell were created by the supernova seen in the year 1181 ( SN 1181 ) as reported by Chinese and Japanese observers. [ 4 ]
Although historically estimates of the distance to Kesteven 75 have varied significantly between 5,000 and 21,000 parsecs, recent analyzes based on H I observations place this supernova remnant at 5,800 ± 500 parsecs from Earth. [10] On the other hand, Kesteven 75 is a very young supernova remnant, with an age of less than 840 years.
RCW 103 is a supernova remnant with right ascension 16 h 17 m 30 s and declination −51° 02 ′. It is approximately 2000 years old and contains x-ray source 1E 161348-5055 at its heart. It is 10,000 light years away in the constellation Norma (constellation) .
9.3 C33 NGC 6992: East Veil Nebula: Supernova Remnant: 2.5 Cygnus: 7 C34 NGC 6960: West Veil Nebula: Supernova Remnant: 2.5 Cygnus: 7 C35 NGC 4889: Coma B: Supergiant Elliptical Galaxy: 300,000 Coma Berenices: 11.4 C36 NGC 4559 Spiral Galaxy: 32,000 Coma Berenices: 9.9 C37 NGC 6885 Open Cluster: 1.95 Vulpecula: 6 C38 NGC 4565: Needle Galaxy ...