A black hole by definition does not emit radiation. In fact, it captures everything that falls onto it. So how do you observe something that does not radiate?
You used eight telescopes for a week-long observation of black holes in April 2017. Which telescopes were used, and was it difficult to get so much observing time on all these telescopes?
Are there any stellar-mass black holes near the Solar System and can you detect them by using the EHT?
What if the black hole shadow is oblate or prolate -- does it mean that there is something wrong with the General Theory of Relativity?
How much data is recorded during an observation and how it is transferred to the central processing facilities?
Do you only use radio telescopes or are you also looking at higher-energy emission? What makes radio telescopes superior to, for example, X-ray telescopes?
- 1 of 2