Recently Browsing 0 members
No registered users viewing this page.
M87 galaxy with the relativistic jet fired from the super massive black hole 27/02/2017 01:19
(55.000.000 light years)
GSO 0.20 m
Sky-Watcher NEQ-5 Pro SynScan mount
QHY5L-IIC + IR cut filter
f: 1000 mm
Matteo Vacca Milis, Italy http://vaccamatteo.weebly.com/ https://www.astrobin.com/users/matteovacca/
Hi, im Kez and have heaps of questions about a hypothesis I came up with hopeing some one will help with some of these and educate me a lot.
What math would I nerd to learn to try to calculate the size of a black hole with a mass several times that of earth?
If a small black hole were stationary relative to the sun close to our solar system would the orbit of earth be likely to create an eclipse with a distant star and if so at what frequency and would current technology be able to conclusively measure an observation? Also what math do I need to figure this out?
Anyone know anyone doing work on this or if it was previously hypothesised? Disproved?
Anyone with anything that may educate me on this topic would be awesome and even general comments, thoughts, I'm a real noob but genuine interest in astrophysics, quantum physics heaps of stuff. Any knowledgeable contacts for discussion. Cheers!!!!
NGC 4051 is a spiral Sifert galaxy in the constellation Ursa Major, at about 48 Mly from earth. It covers about 5 x 4 arcminutes of the night sky The core of this galaxy contains a supermassive black hole.
Data from the Liverpool Telescope, La Palma (2 m aperture and 0.28 "/pixel resolution)
I have a question about the formation of the singularity which supposedly lies at the center of a black hole. A singularity could form for example by the collapse of the core of a massive star after it has depleted its fuel. However, once the core has collapsed down to the Schwarzschild radius, time, from the viewpoint of an observer at a distance, comes to a hold. This is a consequence of the gravitational time dilation which is implied by the general theory of relativity. An event that would last, say, a second for an observer at the Schwarzschild radius, would last an infinite amount of time for a distant observer. Therefore, once the core has collapsed down to the Schwarzschild radius further contraction should, according to the distant observer, take an infinite amount of time. Therefore the singularity can never be formed. What is wrong with this line of reasoning?