Has neutrino redshift been observed?

In summary, neutrinos are emitted during supernova explosions and there are accurate models that predict their energies. However, only a few confirmed events have been detected from a nearby supernova and there is no redshift present. If a supernova were to occur within our galaxy, it would still not show any redshift. Currently, there is no way to distinguish neutrinos from an extragalactic supernova.
  • #1
jcap
170
12
I understand that neutrinos are emitted when supernova explode. I presume that there are quite accurate models that predict the energies of those neutrinos at the time of emission.

Has the phenomenon of redshift been observed when those neutrinos are subsequently detected?
 
Space news on Phys.org
  • #2
Detecting supernova neutrinos is hard. In fact, we only have a handful of confirmed supernova neutrino events which originated from SN1987A and this supernova occurred in the large magellanic cloud which is very close by and there is no redshift to speak of.

If we had a galactic supernova today, the detectors are much larger and we would see more events but this would still not show any redshift because it would still be in our galaxy.

There is currently no way of singling out neutrinos from an extragalactic supernova.
 

FAQ: Has neutrino redshift been observed?

What is neutrino redshift?

Neutrino redshift is the phenomenon where the energy of a neutrino decreases as it travels through space, similar to the redshift observed in light. This is due to the expansion of the universe, causing the wavelength of the neutrino to lengthen and its energy to decrease.

How is neutrino redshift observed?

Neutrino redshift is observed through experiments that measure the energy and wavelength of neutrinos. Scientists can also look for patterns in the energy distribution of neutrinos coming from distant sources, such as supernovae, which can indicate redshift.

Has neutrino redshift been confirmed?

There is currently no direct evidence for neutrino redshift, as it is a very small effect and difficult to detect. However, there is strong theoretical support for its existence based on the principles of general relativity and the expansion of the universe.

Can neutrino redshift be used to study the universe?

Yes, if neutrino redshift is confirmed, it could provide valuable information about the expansion rate of the universe and the distribution of matter. It could also help us better understand the properties of neutrinos, which are still not completely understood by scientists.

Are there any ongoing experiments to observe neutrino redshift?

Yes, there are several experiments currently in development that aim to observe neutrino redshift, such as the Hyper-Kamiokande experiment in Japan and the Deep Underground Neutrino Experiment (DUNE) in the US. These experiments will use large detectors to measure the energy and wavelengths of neutrinos and look for patterns that may indicate redshift.

Similar threads

Back
Top