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Title: Observational strategies for ultrahigh-energy neutrinos: the importance of deep sensitivity for detection and astronomy
Abstract Detecting ultrahigh-energy neutrinos can take two complementary approaches with different trade-offs. 1) Wide and shallow: aim for the largest effective volume, and to be cost-effective, go for wide field-of-view but at the cost of a shallow instantaneous sensitivity — this is less complex conceptually, and has strong discovery potential for serendipitous events. However, it is unclear if any source can be identified, following detection. And 2) Deep and narrow: here one uses astrophysical and multi-messenger information to target the most likely sources and populations that could emit neutrinos — these instruments have deep instantaneous sensitivity albeit a narrow field of view. Such an astrophysically-motivated approach provides higher chances for detection of known/observed source classes, and ensures multi-messenger astronomy. However, it has less potential for serendipitous discoveries. In light of the recent progress in multi-messenger and time-domain astronomy, we assess the power of the deep and narrow instruments, and contrast the strengths and complementarities of the two detection strategies. We update the science goals and associated instrumental performances that envisioned projects can include in their design in order to optimize discovery potential.  more » « less
Award ID(s):
2108466 2108467 2308021
PAR ID:
10669230
Author(s) / Creator(s):
; ; ; ; ; ; ;
Publisher / Repository:
IOP and SISSA
Date Published:
Journal Name:
Journal of Cosmology and Astroparticle Physics
Volume:
2026
Issue:
01
ISSN:
1475-7516
Page Range / eLocation ID:
027
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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