Neutrinos are light, electrically-neutral elementary particles that make up the least-understood part of the Standard Model of particle physics. Facilities like DUNE (the Deep Underground Neutrino Experiment) study neutrinos produced in the Fermilab collider as well as neutrinos arriving from cosmic events. Project 8 will measure neutrino mass by looking at neutrinos emitted when tritium decays. The CMB Stage 4 telescopes will use cosmological data to constrain the number of neutrinos and their mass. Many other neutrino facilities focus on detecting neutrinos produced in astrophysical processes, including ANITA, ARA, BEACON, GRAND, IceCube, PUEO, and RNO-G. These cosmic neutrinos can carry key information, along with electromagnetic radiation and gravitational waves, in "multi-messenger" detections of dynamic events in the universe.
IGC members who study Neutrinos
|Name||Role||Affiliation||Office Phone||Office Address||Affiliated Center(s)||Research Topics(s)|
|Tyler Anderson||Faculty||Physics||+1 814 865 2013||212A Osmond||CMA||Cosmic Rays, Dark Matter, Neutrinos, Multimessenger Astrophysics|
|Mukul Bhattacharya||Postdoc||Astronomy, Physics||--||320A Osmond||CMA||Multimessenger Astrophysics, Gravitational Waves, Neutrinos, Cosmic Rays|
|Carmen Carmona Benitez||Faculty||Physics||+1 814 865 6476||320D Osmond||CMA||Dark Matter, Neutrinos|
|Jose Carpio Dumler||Graduate Student||Physics||+1 814 865 7533||-- --||CMA||Neutrinos, Multimessenger Astrophysics, Dark Matter|
|Douglas Cowen||Faculty||Physics||+1 814 863 5943||303D Osmond||CMA||Dynamic Universe, Neutrinos, Multimessenger Astrophysics|
|Luiz de Viveiros||Faculty||Physics||+1 814 865 7533||320E Osmond||CMA||Dark Matter, Neutrinos|
|Kayla DeHolton||Postdoc||Physics||--||303A Osmond||CMA||Neutrinos|
|Pedro Espino||Postdoc||Physics||--||320 Whitmore||IGC||Neutrinos, Gravitational Waves, Multimessenger Astrophysics|
|Derek Fox||Faculty||Astronomy||+1 814 863 4989||425 Davey||CMA, CTOC||Dynamic Universe, Neutrinos, Multimessenger Astrophysics|
|Eduardo Gutiérrez||Postdoc||Physics||+1 814 863 9605||301B Whitmore Lab||IGC||Black Holes, Multimessenger Astrophysics, Neutrinos, Gravitational Waves, Cosmic Rays|
|Peter Hammond||Postdoc||Physics||+1 814 863 9605||307 Whitmore Lab||IGC||Neutrinos, Gravitational Waves, Multimessenger Astrophysics|
|Bryan Hendricks||Graduate Student||Physics||815-216-0835||204 Osmond Lab||IGC||Neutrinos|
|Kaeli Hughes||Postdoc||Astronomy, Physics||+1 6142906343||N/A Davey Lab||CMA||Neutrinos, Cosmic Rays, Multimessenger Astrophysics|
|Ali Kheirandish||Graduate Student||Physics||+1 814 865 7533||-- Davey Laboratory||CMA||Neutrinos, Multimessenger Astrophysics, Dark Matter|
|Daniel Kodroff||Graduate Student||Physics||0000000000||Basement Osmond Lab||CMA||Neutrinos, Dark Matter|
|Ryan Krebs||Graduate Student||Physics||(814) 865-7533||322 Osmond Lab||CMA, IGC||Neutrinos, Multimessenger Astrophysics|
|Irina Mocioiu||Faculty||Physics||+1 814 865 3721||320G Osmond||CMA||Neutrinos|
|Mainak Mukhopadhyay||Postdoc||Astronomy, Physics||--||320L Osmond Lab||CMA||Multimessenger Astrophysics, Gravitational Waves, Neutrinos|
|Kohta Murase||Faculty||Physics, Astronomy||+1 814 863 9594||321B Osmond Lab||CMA||Cosmic Rays, Neutrinos, Multimessenger Astrophysics, Gravitational Waves, Dark Matter|
|Marco Muzio||Postdoc||Astronomy, Physics||--||322 Osmond Lab||CMA||Multimessenger Astrophysics, Neutrinos, Cosmic Rays|
|Peter Mészáros||Faculty||Physics, Astronomy||814-863-4167||504 Davey Laboratory||CMA||Gravitational Waves, Neutrinos, Multimessenger Astrophysics|
|Surendra Padamata||Graduate Student||Physics||--||322 Osmond Laboratory||CMA||Multimessenger Astrophysics, Black Holes, Cosmic Rays, Gravitational Waves, Neutrinos|
|Aviral Prakash||Graduate Student||ICDS, Physics, Astronomy||--||317 Whitmore Laboratory||CMA||Gravitational Waves, Neutrinos, Multimessenger Astrophysics|
|David Radice||Faculty||Astronomy, Physics||+1 814 865 7533||304 Whitmore||CMA||Black Holes, Neutrinos, Multimessenger Astrophysics, Gravitational Waves|
|Alireza Rashti||Postdoc||Physics||+1 814 863 9605||314 Whitmore Lab||IGC||Black Holes, Dynamic Universe, Multimessenger Astrophysics, Mathematical Structures, Neutrinos, Physical Mathematics, Astrostatistics|
|Steinn Sigurdsson||Faculty||Astronomy||+1 814 863 6038||426 Davey||CMA||Neutrinos, Black Holes, Multimessenger Astrophysics|
|Stephanie Wissel||Faculty||Astronomy, Physics||+1 814 863 9598||303B Osmond||CTOC, CFT, CMA||Multimessenger Astrophysics, Cosmic Rays, Neutrinos|
|Chengchao Yuan||Graduate Student||Physics||+1 814 865 0153||-- --||CMA||Neutrinos, Multimessenger Astrophysics, Cosmic Rays|
|Andrew Zeolla||Graduate Student||Physics||7138709006||204 Osmond||CMA||Multimessenger Astrophysics, Neutrinos, Cosmic Rays|
|Andrew Ziegler||Graduate Student||Physics||--||6E Osmond Laboratory||CMA||Neutrinos|
News about Neutrinos
Icecube Neutrinos Give First Glimpse Into the Inner Depths of an Active Galaxy
UNIVERSITY PARK, Pa. — For the first time, an international team including Penn State scientists has found evidence of high-energy neutrino emission from Messier 77, also known as NGC 1068, an active galaxy in the constellation of Cetus.
Neutrinos are fundamental particles with no charge and almost no mass, and they rarely interact with other matter. High-energy neutrinos — like those detected here with energies in the teraelectron volt (TeV), or trillion-electron volt, range — can travel for billions of light-years through space without being deflected or absorbed. Thus, while they are extremely difficult to detect, they can provide accurate information about the distant universe, especially when the information the carry can be combined with information from other cosmic signals in what is called “multimessenger” astronomy.
The detection was made by the IceCube Neutrino Observatory, a massive neutrino telescope encompassing one billion tons of instrumented ice at depths from 1.5 to 2.5 kilometers below Antarctica’s surface near the South Pole.
“IceCube is a veritable discovery machine,” said Doug Cowen, professor of physics and of astronomy and astrophysics at Penn State and a long-time IceCube collaborator. “The huge detector has lived up to its promise to launch the brand-new field of high energy neutrino astronomy, and then some, now by giving us glimpses behind a black hole’s black-out curtain of matter. IceCube has once again proved that when humanity points a new instrument at the heavens — starting with Galilleo’s first telescope — our knowledge of the universe around us increases by leaps and bounds.”
This unique telescope, which explores the farthest reaches of our universe using weakly interacting neutrinos instead of light, recorded the first observation of a potential source of high-energy astrophysical neutrinos in 2017. The source of these first observations is the known blazar TXS 0506+056, which is situated in the night sky just off the left shoulder of the constellation Orion and about 4 billion light-years from Earth.
Blazars are very luminous and distant active galaxies with a powerful, relativistic jet of particles pointing directly at us. Unlike NGC 1068, the blazar TXS 0506+056 had not been studied much before the multimessenger detection of neutrinos and high-energy electromagnetic radiation that allowed follow-up measurements by almost 20 telescopes around the world. Now, the observation of neutrino emission from a different type of active galaxy brings us closer to understanding the supermassive black holes powering them.
“One neutrino can single out a source. But only an observation with multiple neutrinos will reveal the obscured core of the most energetic cosmic objects,” said Francis Halzen, a professor of physics at the University of Wisconsin–Madison, the headquarters of the National Science Foundation (NSF)´s Antarctic neutrino facility, and principal investigator of IceCube. “IceCube has accumulated some 80 neutrinos of TeV energy from NGC 1068, which are not yet enough to answer all our questions, but they definitely are the next big step towards the realization of neutrino astronomy.”
The results appear Nov. 4 in the journal Science.
Click here for the full article.