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How many neutrinos from supernova SN 1987A were detected on Earth?
Lbl0001
There are somewhere around 65 billion neutrinos per second passing through every square centimeter perpendicular to the Sun.
By far the majority of those also come out the other side... baryonic matter is essentially transparent to neutrinos.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoNot many. Depending on which detector you use, it was either 11 or 5. So the total number was 16.
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When did supernova 1987A occurred?
SN 1987A [See Link] was a supernova in the Tarantula Nebula in the Large Magellanic Cloud, a nearby dwarf galaxy. It occurred approximately 168,000 light years from Earth, close enough that it was visible to the naked eye. It was the closest observed supernova since SN 1604, which occurred in the Milky Way. The light from the supernova reached Earth on February 23, 1987. As the first supernova discovered in 1987, it was labeled "1987A".
How do measurements of neutrinos from the sun pose a problem for modern astronomy?
At present, no problems. 15 years ago, scientists had no explanation for the small number of solar neutrinos detected at our Earth. Either we didn't understand neutrino formation in our Sun, our detectors were wrong, or neutrinos had the capacity to decay. The latter seemed to be the least likely possibility, so scientists argued for many years which of the first two was correct. In 1998 it was discovered that neutrinos do, indeed, decay into other neutrinos. The reason we weren't seeing as many neutrinos as we expected was because the ones we were expecting to see had decayed into other types. So the solar neutrino problem is no longer a problem.
What year was supernova seen?
Several supernovas have been observed, in different years.Several supernovas have been observed, in different years.Several supernovas have been observed, in different years.Several supernovas have been observed, in different years.
Why doesn't a supernova occur on earth?
A supernova can't occur on any planet. A supernova occurs when a very large star, at least 8 times more massive than the sun dies.
When light hits the earth's surface does it continue through?
Nope. Light particles (photons)are nowhere near energetic enough to do that. On the other hand, tiny super-high-energy particles called, "Neutrinos" from outside the Earth are right now passing through you, me, and the entire Earth. There are not many materials dense enough to stop Neutrinos!
When did supernova 1987A occurred?
SN 1987A [See Link] was a supernova in the Tarantula Nebula in the Large Magellanic Cloud, a nearby dwarf galaxy. It occurred approximately 168,000 light years from Earth, close enough that it was visible to the naked eye. It was the closest observed supernova since SN 1604, which occurred in the Milky Way. The light from the supernova reached Earth on February 23, 1987. As the first supernova discovered in 1987, it was labeled "1987A".
Can neutrinos change into other types of neutrinos?
Yes; the scienific terminology for this phenomenon is "neutrino oscillation". Neutrinos exist in three different flavours - electron, muon and tao neutrinos, listed in order of increasing mass (each also has an antiparticle). Although it is not know why this is the case, it was originally discovered that neutrinos oscillate when examining the neutrinos emitted by the sun; although primarily electron neutrinos are emitted as a result of the fusion process within the sun, the quantities of the different flavours of neutrinos detected on Earth from the sun are in roughly equal proportions.
What is the tiniest thing on Earth?
neutrinos
When was the last super nova seen in the milkey way galaxy and who saw it?
SN 2006gy was an extremely energetic supernova that was discovered on September 18, 2006. Although about one hundred times as luminous as SN 1987A, which was bright enough to be seen by the naked eye, SN 2006gy was more than 1,400 times as far away as SN 1987A, and too far away to be seen without a telescope.SN1987A was a supernova in the outskirts of the Tarantula Nebula. It could be seen with the naked eye from the Southern Hemisphere.It was the closest observed supernova since SN 1604 The light from the supernova reached Earth on February 23, 1987.SN1604 was seen on October 9th, 1604 generally a supernova occurs once every fifty years but the universe has been in a drought for these supernatural awesome eventsSN1987A was a supernova in the outskirts of the Tarantula Nebula. It could be seen with the naked eye from the Southern Hemisphere.
How do measurements of neutrinos from the sun pose a problem for modern astronomy?
At present, no problems. 15 years ago, scientists had no explanation for the small number of solar neutrinos detected at our Earth. Either we didn't understand neutrino formation in our Sun, our detectors were wrong, or neutrinos had the capacity to decay. The latter seemed to be the least likely possibility, so scientists argued for many years which of the first two was correct. In 1998 it was discovered that neutrinos do, indeed, decay into other neutrinos. The reason we weren't seeing as many neutrinos as we expected was because the ones we were expecting to see had decayed into other types. So the solar neutrino problem is no longer a problem.
What are the particles that enter Earth's atmosphere?
THIS IS NOT SPELLED WRONG Neutrinos.
What year was supernova seen?
Several supernovas have been observed, in different years.Several supernovas have been observed, in different years.Several supernovas have been observed, in different years.Several supernovas have been observed, in different years.
What Are Particles That Enter Earth's Atmosphere Called?
THIS IS NOT SPELLED WRONG Neutrinos.
How did gold get on earth?
A supernova while the Earth was being created.
Can neutrinoes pass through all matirials in the Earth?
Neutrinos can pass through the entire Earth itself as if it's almost not there at all.
What about the neutrino coming from space?
Neutrinos are high energy particles. Earth is bombarded with more than million neutrinos every day that pass right through the earth, and everything on it. So they are very hard to detect, but special techniques have been developed for this too.
Is a supernova bigger than earth?
Much bigger. Earth is a relatively small planet, much smaller than even a dwarf star. A supernova is a very large star exploding.
