Talk:Tom Bolton (astronomer)

Not 'Irrefutable'
The word 'irrefutable' in the first sentence is too strong. As I remember it, the work of Bolton and that of Webster & Murdin was regarded as making it very likely that the unseen companion of Cygnus X-1 was a black hole, but as not proving it. They were unable to exclude the possibility that the binary system was oriented in such a way that allowed the unseen companion to be a neutron star. This loop-hole wasn't closed until the 1990's when the X-ray novae V616 Monocertotis (A0620-00) and V404 Cygni were shown to have unseen companions that were definitely too massive to be neutron stars. TristramBrelstaff (talk) 20:26, 12 July 2008 (UTC)

External links modified (January 2018)
Hello fellow Wikipedians,

I have just modified one external link on Tom Bolton (astronomer). Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
 * Added archive https://archive.is/20120718182748/http://www.astro.utoronto.ca/people/faculty/memberinfo_view?userId=bolton to http://www.astro.utoronto.ca/people/faculty/memberinfo_view?userId=bolton

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

Cheers.— InternetArchiveBot  (Report bug) 19:08, 29 January 2018 (UTC)