Discover and read the best of Twitter Threads about #gw190521
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@Magrathea_staff @LIGO Cosmology can be really tricky sometimes, but I can try to clear some things up. We measure luminosity distance from gravitational waves sources, which tells us how far away an object would be based on the brightness (or luminosity) of the detected signal.
@Magrathea_staff @LIGO But luminosity distance can be a bit confusing when talking about really far away sources. We can't apply the usual d=vt here to convert the distance to the time in took the gravitational waves to travel.
@Magrathea_staff @LIGO If we converted the distance of 5.2Gpc to a time, assuming the gravitational waves travel at the speed of light, we'd estimate that the source was 17 billion light years away. That's older than the age of the universe, and definitely can't be right. Instead, we need cosmology.
BREAKING -
Ladies and Gentlemen - We have made the first confirmed detection of intermediate mass black holes with LIGO and Virgo detectors.
An honor of a lifetime to be given a leading role in this historic discovery. #GW190521
Ladies and Gentlemen - We have made the first confirmed detection of intermediate mass black holes with LIGO and Virgo detectors.
An honor of a lifetime to be given a leading role in this historic discovery. #GW190521
With about 142 times the mass of our Sun and signal from half-way across the universe, this new discovery breaks all many cosmic records!
Image: Deborah Ferguson / MAYA Collaboration
Image: Deborah Ferguson / MAYA Collaboration
This is discovery a milestone in modern astronomy and a personal milestone after six years of intensive research of hunting these elusive black holes.
news.vanderbilt.edu/2020/09/02/van…
news.vanderbilt.edu/2020/09/02/van…
