Time-Integrated Searches for Sub-TeV Neutrino Sources with IceCube-DeepCore

@misc{abbasi2026timeintegrated,
  title = {{Time-Integrated Searches for Sub-TeV Neutrino Sources with IceCube-DeepCore}},
  author = {R. Abbasi and M. Ackermann and J. Adams and J. A. Aguilar and M. Ahlers and J. M. Alameddine and S. Ali and N. M. Amin and K. Andeen and C. Argüelles and S. Athanasiadou and S. N. Axani and R. Babu and X. Bai and A. Balagopal V. and S. W. Barwick and V. Basu and R. Bay and J. J. Beatty and J. Becker Tjus and P. Behrens and J. Beise and C. Bellenghi and S. Benkel and S. BenZvi and D. Berley and E. Bernardini and D. Z. Besson and E. Blaufuss and L. Bloom and S. Blot and F. Bontempo and J. Y. Book Motzkin and C. Boscolo Meneguolo and S. Böser and O. Botner and J. Böttcher and J. Braun and B. Brinson and Z. Brisson-Tsavoussis and L. Brusa and R. T. Burley and D. Butterfield and K. Carloni and J. Carpio and N. Chau and Y. C. Chen and Z. Chen and D. Chirkin and S. Choi and A. Chubarov and B. A. Clark and D. A. Coloma Borja and A. Connolly and J. M. Conrad and D. F. Cowen and C. De Clercq and J. J. DeLaunay and D. Delgado and T. Delmeulle},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.12055},
  eprint = {2609.12055},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.12055},
}

TY  - UNPB
TI  - Time-Integrated Searches for Sub-TeV Neutrino Sources with IceCube-DeepCore
AU  - R. Abbasi
AU  - M. Ackermann
AU  - J. Adams
AU  - J. A. Aguilar
AU  - M. Ahlers
AU  - J. M. Alameddine
AU  - S. Ali
AU  - N. M. Amin
AU  - K. Andeen
AU  - C. Argüelles
AU  - S. Athanasiadou
AU  - S. N. Axani
AU  - R. Babu
AU  - X. Bai
AU  - A. Balagopal V.
AU  - S. W. Barwick
AU  - V. Basu
AU  - R. Bay
AU  - J. J. Beatty
AU  - J. Becker Tjus
AU  - P. Behrens
AU  - J. Beise
AU  - C. Bellenghi
AU  - S. Benkel
AU  - S. BenZvi
AU  - D. Berley
AU  - E. Bernardini
AU  - D. Z. Besson
AU  - E. Blaufuss
AU  - L. Bloom
AU  - S. Blot
AU  - F. Bontempo
AU  - J. Y. Book Motzkin
AU  - C. Boscolo Meneguolo
AU  - S. Böser
AU  - O. Botner
AU  - J. Böttcher
AU  - J. Braun
AU  - B. Brinson
AU  - Z. Brisson-Tsavoussis
AU  - L. Brusa
AU  - R. T. Burley
AU  - D. Butterfield
AU  - K. Carloni
AU  - J. Carpio
AU  - N. Chau
AU  - Y. C. Chen
AU  - Z. Chen
AU  - D. Chirkin
AU  - S. Choi
AU  - A. Chubarov
AU  - B. A. Clark
AU  - D. A. Coloma Borja
AU  - A. Connolly
AU  - J. M. Conrad
AU  - D. F. Cowen
AU  - C. De Clercq
AU  - J. J. DeLaunay
AU  - D. Delgado
AU  - T. Delmeulle
PY  - 2026
DA  - 2026/09/10
PB  - arXiv
DO  - 10.48550/arxiv.2609.12055
UR  - https://arxiv.org/abs/2609.12055
AB  - We have developed techniques for a competitive sub-TeV time-integrated neutrino search and applied it to 11.1 years of IceCube-DeepCore data. The DeepCore subarray lowers the sensitivity of IceCube down to sub-TeV energies and is especially interesting for objects with soft spectra. Three studies were performed: a search for neutrino emission from AGN exhibiting high intrinsic X-ray flux, including NGC 1068, as identified by SWIFT/BAT; a search for neutrino emission from Galactic objects identified by Fermi-LAT as exhibiting a spectral shape consistent with neutral pion decay; and an all-sky search for neutrino point sources. Objects for this study were selected given their prospects for sub-TeV neutrino emission. No evidence for sub-TeV neutrino emission is found in any of the searches performed. Finally, for each catalog of objects, we use a statistical combination of the p-values via a binomial test to search for aggregated neutrino emission from a subset of the objects. Neither of the binomial tests yields significant results. For NGC 1068, assuming a power law spectrum with index 3.4, the 90% confidence level upper limit on per-flavor neutrino emission in the 30--400 GeV range is Φ_ν+ν̅|_1 TeV < 9.5 × 10^−11 TeV^−1 cm^−2 s^−1, a factor of two higher than the extrapolation of IceCube's measurement at higher energies. We additionally provide neutrino flux upper limits for a variety of spectra.
ER  -