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LIGO Spots Another Gravitational Wave Soon After Powering Back On (newscientist.com)
New submitter nichogenius writes: The latest observation run of LIGO and VIRGO only started April 1st, but has already observed another black hole merger. The LIGO detectors have been offline since the 25th of August, 2017 for a series of upgrades. The latest observational run is the first run where gravitational wave events are being publicly announced as they happen rather than being announced weeks or months later. Few details of the merger are available at this time, but there is some information available on LIGO's twitter and raw details can be obtained from LIGO's event database page.
Gravitational detection events are being publicly broadcast using NASA's VOEvent system. If you know a bit of python, you can setup your own VOEvent client using the pygcn module with example code available in this tutorial.
Gravitational detection events are being publicly broadcast using NASA's VOEvent system. If you know a bit of python, you can setup your own VOEvent client using the pygcn module with example code available in this tutorial.
It won't do any good, will it?
Confucius say, "Find worm in apple - bad. Find half a worm - worse."
it is nice to see that machine back on and working. I would have liked a bit more background, what actually has changed during the upgrade. It seems that this contained only in a ``premium article" in the new scientist. Fortunately there are other sources where on can look things up: 40 percent more sensitive machine leading to twice the volume of space to be observable. Some main mirrors were replaced, the laser power increased and a technique called ``squeezing" introduced which counteracts the now stronger distortion of the beam. Also new is that detections of events are publicly announced as soon as they are available. Here is the source: https://news.stanford.edu/2019...
for chris's location
if he moves or even just jiggles in his double-wide computer chair
gravity waves will be off the chart
First light detected! Errr, umm, first waves detected. And posted.
Really. That is what I read Slashdot comments for. Much appreciated.
Python? Ew. Come on NASA, you can do better.
Why call upon black holes, then? As far as I remember, you can have stars significantly more massive than that before the collapse into a black hole becomes the only explanation to describe what was observed.
With only that presented as evidence, it sounds like someone was a bit overeager to justify the LIGO's budget with claims of an extraordinary observation.
You are not scientists. Looking at pictures on books and websites and regurgitating what you read without understanding does not make you scientists, and does not make you seem intelligent. :) No amount of research can cure your crippling autism and miraculously give you social skills. :) You will remain alone and unloved, involuntary celibate and rejected until the day you wake up to the sad reality and choose suicide over a lifetime of misery. :) Why waste time? You know the way out already and it can be painless.
gravitational waves? Maybe that's how they get them all the time then, eh?
But the billion budgets are paid on schedule.
Check and mate, sceintists.
I'm a dilettante at Physics, I enjoy read about it but I'm by no means an expert so I've been avidly read about LIGO, but one aspect seems to go completely explained:
Gravity waves 'stretch' spacetime, so they stretch time as well as space proportionately, so how can LIGO possible detect a time discrepancy?
The gravity wave must be stretching and contracting time in a direct proportion to how it stretches space, any discrepancy should be zero.
So what am I missing here?
How do we know these are black hole mergers and not other dark matter gravitational waves?