Upper Limit on X-rays from a New Supernova

摘要: KNOWLEDGE of the intensity X-radiation from early stages a supernova is important to our understanding processes which take place during outburst. With this in mind, two us (H. O. and E. B.) have compared celestial positions times occurrence recently reported outbursts with some recent surveys sky at X-ray wavelengths. It was noted that high-sensitivity scan Virgo cluster galaxies an Aerobee rocket on July 7, 1967, by Bradt et al.1 occurred 6 days after discovery SN1961h NGC4254 Zwicky2.