Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session R08: Ultra High Energy Neutrino Astronomy |
Hide Abstracts |
Sponsoring Units: DAP Chair: Hallsie Reno, University of Iowa Room: Sheraton Governor's Square 10 |
Monday, April 15, 2019 1:30PM - 1:42PM |
R08.00001: New Detection Signatures for IceCube at High Energies Bei Zhou, John F Beacom Due to IceCube, neutrino astrophysics is entering a new era, which will allow powerful new probes of both astrophysics and particle physics. We investigate new signatures of high-energy neutrinos in IceCube that can help discriminate among presently allowed scenarios. |
Monday, April 15, 2019 1:42PM - 1:54PM |
R08.00002: Simulations of radio-based Ultra-High Energy (UHE) in-ice neutrino experiments. Jorge Torres Computer simulations of UHE neutrinos interacting in ice and their subsequent detection through the radio-technique are important, as they help us to improve the design of experiments and to better understand our results. Because of this crucial role of the simulations, the InIceMC simulation group, a team composed mainly by members of the ARA and ARIANNA collaborations, has been born, having as a main goal the improvement of the computing tools we use to model the physics behind the detection of UHE neutrinos. This talk will highlight the achieved development, the work in progress, and the overall goals of the InIceMC simulation working team. |
Monday, April 15, 2019 1:54PM - 2:06PM |
R08.00003: The Radio Neutrino Observatory Amy L Connolly The Radio Neutrino Observatory (RNO) aims to probe the astrophysical neutrino flux at energies from 30 PeV and up, discover an ultra-high energy counterpart, and employ a multi-pronged approach to characterize neutrinos for multi-messenger astrophysics. While IceCube has measured a cosmic neutrino flux up to ~10 PeV, at higher energies greater exposure is needed. RNO will consist of 61 stations of radio antennas deployed near South Pole. The stations’ receivers will deployed at a depth in the ice due to the higher effective volume and sky coverage for astrophysical neutrinos. An RNO surface array component will play an important role in measuring neutrino properties as well as cosmic rays. We will present the RNO design and its motivation in terms of its unique, multi-messenger science program, as well as the timeline for deployment and results. RNO brings together a broad coalition from the in-ice radio neutrino community and is currently in the proposal phase. |
Monday, April 15, 2019 2:06PM - 2:18PM |
R08.00004: Searching for Neutrinos & Cosmic Rays and Studying Antarctic ice with the Askaryan Radio Array Brian Allen Clark Ultra-high energy neutrinos (>10 PeV) are unique messengers to the distant, high-energy universe, |
Monday, April 15, 2019 2:18PM - 2:30PM |
R08.00005: Evolving Antennas for Ultra-High Energy Neutrino Detection Suren R Gourapura, Amy L Connolly, Kai Staats, Stephanie Ann Wissel, Dean Arakaki, Ian Best, Adam D Blenk, Brian Allen Clark, Maximilian Clowdus, Corey Harris, Hannah C Hasan, Luke Letwin, David Liu, Carl G Pfendner, Jordan Potter, Julie Rolla, Cade Sbrocco, Thomas Sinha, Jacob Trevithick Evolutionary algorithms borrow from biology the concepts of mutation and selection in order to evolve optimized solutions to known problems. We are developing genetic algorithms to design antennas that are more sensitive to UHE neutrino-induced radio pulses than current designs. We are taking two parallel approaches. The first is to evolve antenna response patterns that give the highest effective volume for detecting neutrinos for a given array geometry. The second is to evolve the antennas themselves using neutrino sensitivity as a measure of fitness. The projects integrate the XFdtd finite-difference time domain modeling program with simulations of neutrino experiments to assign a fitness score for each evolved solution, based on neutrino sensitivities. We will summarize initial results. |
Monday, April 15, 2019 2:30PM - 2:42PM |
R08.00006: The Giant Radio Array for Neutrino Detection Miguel A Mostafa Ultra-high energy (UHE) neutrinos are arguably the most promising way to find the origin of the most energetic particles in the universe. The Giant Radio Array for Neutrino Detection (GRAND) is a proposed detector designed to discover and study the sources of UHE cosmic rays by looking for UHE neutrinos. GRAND will also observe UHE cosmic rays, and gamma rays that are co-produced with the neutrinos, allowing for multi-messenger studies at the highest energies. The science goals for GRAND also include studying fundamental neutrino physics, astrophysical radio transients, and the cosmic epoch of reionization. GRAND will be a network of 20 subarrays of 10,000 radio antennas each, deployed in radio-quiet sites around the world, totaling a combined area of 200,000 km2. We present the scientific motivation, detection strategy, design, and construction plans for GRAND. |
Monday, April 15, 2019 2:42PM - 2:54PM |
R08.00007: Earth-skimming tau neutrinos: air Cherenkov signals from tau decays Mary Hall Reno Detection of the flux of very-high energy cosmic neutrinos is a key measurement to understand the highest energy processes in the universe. In particular, neutrinos that originate from ultra-high energy cosmic ray interactions with background photons is crucial to understand the highest energy cosmic rays. Using the Earth as a neutrino converter, satellite-based or balloon-based detectors have the potential to measure the flux of tau neutrinos that yield upward-going extensive air showers (EAS) from tau decays. Using the Probe of Extreme Multi-Messenger Astrophysics (POEMMA) mission’s detector capabilities for EAS Cherenkov signals at an orbital altitude of 525 km as an example, we discuss the simulation process and neutrino sensitivity for neutrino energies above 10 PeV for isotropic fluxes like the cosmogenic neutrino flux and for neutrino point source target-of-opportunities. |
Monday, April 15, 2019 2:54PM - 3:06PM |
R08.00008: Demonstration and Performance of a Low-Threshold Trigger System for Radio Detection of Ultra-High Energy Neutrinos Abigail Vieregg We have developed a new, low-threshold trigger system for searches for high energy astrophysical and cosmogenic neutrinos (> 30 PeV) using radio detection techniques. The trigger is an interferometric phased array, coherently combining digitized signals from multiple antennas in real time and forming multiple beams with unique delays to cover the entire available solid angle. We have successfully demonstrated this technique on the ARA experiment at the South Pole, improving the achieved trigger threshold by nearly a factor of two. The phased array trigger is now the baseline design for the Radio Neutrino Observatory (RNO), a future in-ice radio experiment at the South Pole. This phased array technique is also significantly more robust that previous approaches against sources of man-made radio backgrounds. This feature enables the BEACON experiment, a mountaintop detector that aims to detect upward-going air showers that result from high-energy tau neutrino interactions in the Earth, on which we have also deployed a phased array trigger. I will discuss the design, deployment, and performance of the phased array trigger system on ARA and BEACON, and prospects for future improvement. |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700