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re: UPDATED. A European Astronomical Observatory is Announcing an “Unprecedented Discovery”
Posted on 10/12/17 at 7:58 pm to MaroonNation
Posted on 10/12/17 at 7:58 pm to MaroonNation
quote:
It was also proven that the researchers jumped the gun a bit on the discovery of gravitational waves (signs of the first light emitted by the Big Bang that would prove quantum mechanics and galactic inflation). It was shown that the instruments actually were viewing dust in space.
That was the BICEP2 experiment in Anarctica from 2009-2012. Peer review knocked it down.
However the LIGO results have been confirmed. Gravitational waves have been discovered and this supports the Big Bang model and inflation.
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Posted on 10/12/17 at 9:33 pm to Kentucker
Black hole merger being mentioned in another thread. A chance to anticipate and measure gravitational waves?
Posted on 10/12/17 at 9:34 pm to Kentucker
I stand corrected kind sir 
Posted on 10/13/17 at 9:01 am to MaroonNation
Posted on 10/13/17 at 9:14 am to Perfect Circle
quote:
Black hole merger being mentioned in another thread. A chance to anticipate and measure gravitational waves?
It was a merger of two black holes that generated the gravitational wave first detected by LIGO. Because of LIGO's success other gravitational wave detectors are in the planning stages but none, to my knowledge, are being constructed yet.
Also, it's a European observatory that will make the announcement on Monday. LIGO is an entirely American effort. I'm sure that data is shared freely around the world but I don't think anyone else is equipped to experiment with gravitational waves yet.
This post was edited on 10/13/17 at 9:16 am
Posted on 10/13/17 at 10:45 am to Kentucker
Ok. Gotcha.
Posted on 10/13/17 at 2:35 pm to Kentucker
They figured out where the missing mater is. Not dark matter though.
Theories predicted a lot more normal matter than we observe and they finally found where the missing matter is.
Theories predicted a lot more normal matter than we observe and they finally found where the missing matter is.
Posted on 10/13/17 at 4:17 pm to agrunner
quote:
Theories predicted a lot more normal matter than we observe and they finally found where the missing matter is.
It seems that announcement came on Tuesday. Maybe they're making the official announcement on Monday. Would sure be anti-climactic, though.
LINK
quote:
(Phys.org)—Two teams working independently have found evidence of the existence of missing Baryonic matter—particles that link galaxies together. One team was made of members from the Institute of Space Astrophysics, the other was based out of the University of Edinburgh. Both teams have uploaded a paper describing their work to the arXiv preprint server and both are claiming their findings solve the mystery of where so much of the normal matter—protons, neutrons and electrons—in the universe has been hiding.
This post was edited on 10/14/17 at 10:37 am
Posted on 10/16/17 at 10:16 am to Kentucker
Update is in the OP.
Posted on 10/16/17 at 2:52 pm to Kentucker
I knew that physicists have predicted that merging neutron stars were the cause of those particular bursts but I didn't realize that we had the means to prove it. Pretty significant imo.
Posted on 10/16/17 at 5:14 pm to Commander Data
Yeah, another mark that this discovery has set is the involvement of scientists all over the world. There were a record number of telescopes, including Hubble in space, that were alerted and quickly got the galaxy NGC 4993 in focus. The LIGO gravity wave detectors in Louisiana and Washington state were ready, too.
Scientists are transcending politics to make these herculean efforts. They're setting an example that all humans should emulate.
Scientists are transcending politics to make these herculean efforts. They're setting an example that all humans should emulate.
Posted on 10/17/17 at 11:06 am to Kentucker
quote:
Scientists are transcending politics to make these herculean efforts. They're setting an example that all humans should emulate.
Absolutely. There are quite a few projects that would happen sooner if they had more funding. Work together and give our scientists a bigger budget. Got to find a way to make our average Joe and Linda excited about science and even though I don't care too much about a Mars mission, that may be our ticket to accomplishing it.
This post was edited on 10/17/17 at 11:09 am
Posted on 10/17/17 at 1:29 pm to Commander Data
I agree with you about the Mars mission. There isn't much we can accomplish with a manned mission that smart robots can't do at a fraction of the cost.
However, it would definitely boost the average person's interest in space exploration and science. Also, the everyday technology that would come from such a mission is significant. Mission planners are saying that there would 15-20 new inventions that would benefit everybody's lives.
The downside is that NASA is saying that the costs for the mission are much greater than originally estimated and that the dangers to astronauts might outweigh all costs. This fortifies my conclusion that humans, as biological creatures, are not destined to travel in space. We must design artificial intelligence to do that.
However, it would definitely boost the average person's interest in space exploration and science. Also, the everyday technology that would come from such a mission is significant. Mission planners are saying that there would 15-20 new inventions that would benefit everybody's lives.
The downside is that NASA is saying that the costs for the mission are much greater than originally estimated and that the dangers to astronauts might outweigh all costs. This fortifies my conclusion that humans, as biological creatures, are not destined to travel in space. We must design artificial intelligence to do that.
Posted on 10/21/17 at 12:49 pm to Kentucker
quote:
From reading the article, it seems that gravitational waves travel faster than light. The LIGO detector picked up the waves 2 seconds before the ESO telescopes recorded light from the neutron star merger.
That's more of an effect of the emission process rather than superluminal travel.
There are three basic factors:
1. Gravitational wave amplitude peaks before the physical merger. The gravitational wave signal above the detection threshold starts traveling to Earth before the electromagnetic signal is generated.
2. The peak of the electromagnetic signal happens after the merger. Similar to the above, the peak gamma ray signal is probably produced by neutron bombardment of the mass ejected in the physical merger (fast neutron capture) as well as plain ole thermal processes (lots of high-energy particle collisions).
3. The electromagnetic signal will have some brief epoch of non-linear travel as it interacts with the surrounding ejected matter. I'm guessing this is a minority contributor but still an effect.
Similarly SN1987A produced a neutrino emission detectable several hours before the more traditional EM emissions were detected -- including naked eye observations. Because of technology limitations that existed at that time, the neutrino detection was processed and recognized after the EM signal but actually occurred prior to it.
Posted on 10/21/17 at 4:11 pm to Cylinder
Thanks for the great explanation.
Please post more often.
Please post more often.
Posted on 10/23/17 at 6:46 pm to Kentucker
I just need to know if the trout are going to be biting this weekend and what color fly should I use?
Thanks in advance
Thanks in advance
Posted on 10/23/17 at 7:59 pm to Pigfeet
quote:
I just need to know if the trout are going to be biting this weekend and what color fly should I use?
Yes, the cooler weather makes them hungry. They have to fatten up for the Winter.
I'd use yellows and oranges mixed with black and deep browns. They'll snap 'em up.
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