0
Neutrinos are incredibly hard to detect so the "absence" of neutrinos doesn't mean they are not there.
It was long thought that neutrinos did not decay. We now know they do so. Thus, the lower than expected number of neutrinos detected coming from the Sun has been fully explained. It took four decades but the problem is now fully resolved.
What else can I help you with?
What is a solar neutrinos?
Solar neutrinos are electron neutrinos that are in the sun. The sun is what produces nuclear fusion.
Do solar neutrino carry energy?
Yes, solar neutrinos do carry energy. Neutrinos are extremely light, neutral particles that are produced in nuclear reactions within the Sun's core. The energy carried by solar neutrinos can affect processes such as nuclear reactions on Earth.
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.
Astronomers are interested in solar neutrinos because neutrinos carry with them information about?
The nuclear reactions going on in the heart of the Sun.
Are scientists trying hard to detect solar neutrino?
Yes but not at much high level
How can neutrino oscillation explain the solar neutrino problem?
The solar neutrino problem relates to the discrepancy between the proportions of the different flavours of neutrinos emitted by the sun in the theoretical model as opposed to experimental measurements. Whilst the sun primarily emitts electron neutrinos, neutrino observatories such as SNO+ detected neutrinos in roughly equal proportions of the three flavours; furthermore the quantity of electron neutrinos detected was less than the theoretically predicted value. Both of these can be explained by neutrino oscillation - in which the neutrinos alter their mass to change their flavour (ie. an electron neutrinos gain mass to change to a muon neutrino). This would also explain the relative lack of electron neutrinos, thus solving the solar neutrino problem!
At the solar neutrino observatory what is used to capture neutrinos?
In the solar neutrino observatory, neutrinos are captured using tanks filled with a type of heavy water called deuterium oxide. Neutrinos interact with the deuterium nuclei in the water, producing a faint flash of light that can be detected by sensitive instruments.
What particle do you detect coming directly from the solar interior?
Neutrinos are the particles that are detected coming directly from the solar interior. These particles are produced by nuclear reactions in the core of the Sun and are able to pass through vast amounts of matter, making them excellent indicators of solar activity.
What are the different flavors of neutrinos and how do they differ from each other?
Neutrinos come in three flavors: electron neutrinos, muon neutrinos, and tau neutrinos. These flavors are distinguished by the type of charged lepton they are associated with - electron, muon, or tau. Neutrinos can change between these flavors through a process called neutrino oscillation, which is a unique property of neutrinos.
What are neutrinos-?
Neutrinos are subatomic particles, which exist in three "flavours" - the electron, muon and tao neutrino (listed in order of increasing ass); each of these also has a respective antiparticle. Most of the neutrinos incident on the Earth are "Solar Neutrinos" (neaning that they are emitted by the sun. The neutrinos oscillate between the different "flavours", which are determined by their respective masses, and are extremely unreactive - more than 50 trillion neutrinos go the human body every second! As the masses of the neutrinos are very minimal - virtually zero - neutrinos travel at near-light speed.There have been several experiments dedicated to the detection of neutrinos, the most notable being T2K and SNO amongst others; SNO is currently being re-activated with enhanced detection prospects through the use of an organic scintillating fluid, as is now named SNO+.
What is the key ingredient in the modern condensation theory of the solar system's origin that was missing or unknown in the nebula theory?
The key ingredient in the modern condensation theory that was missing in the nebula theory is the understanding of the role of turbulence. Condensation theory incorporates the effects of turbulence in the early solar system, showing how it can facilitate the collapse of material into the Sun and the formation of planetesimals. This provides a more detailed and realistic explanation for the formation of the solar system compared to the original nebula theory.
In terms of solar radiation what is the best explanation as to why winter is cold?
there is a reduction in the amount of direct solar energy received
