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2025
article
Analysis of the Diffuse Astrophysical Flux from the Galactic Plane with 12.1 Years of IceCube Starting Tracks, Throughgoing Tracks and Cascades
Frank Schroeder, IceCube Collaboration, Rasha Abbasi, Markus Ackermann, Jenni Adams, Sanjib Kumar Agarwalla, Juanan Aguilar, Markus Ahlers, Jean-Marco Alameddine, Shoukat Ali, Najia Moureen Binte Amin, K. Andeen, Carlos Argüelles, Y. Ashida, Sofia Athanasiadou, Spencer Axani, Rishi Babu, Xinhua Bai, Joe Baines-Holmes, Aswathi Balagopal V., Steven W. Barwick, Simeon Bash, Vedant Basu, Ryan Bay, James Beatty, Julia Becker Tjus, Philipp Behrens, Jakob Beise, Chiara Bellenghi, B. Benkel, Segev Y. BenZvi, David Berley, Elisa Bernardini, Dave Besson, E. Blaufuss, Lucas Bloom, Summer Blot, Ilya Bodo, Federico Bontempo, Julia Book Motzkin, Caterina Boscolo Meneguolo, Sebastian BOSER, Olga Botner, Jakob Bottcher, Jim Braun, Bennett Brinson, Zoe Brisson-Tsavoussis, Ryan T. Burley, Delaney Butterfield, Michael Campana, Kiara Carloni, Jose Carpio, Sharmistha Chattopadhyay, Thien Nhan Chau, Zheyang Chen, Dmitry Chirkin, Seowon Choi, Brian A. Clark, Alan Coleman, Peter John Cusack Coleman, Gabriel Collin, Diego Alberto Coloma Borja, A. Connolly, Janet M. Conrad, Rebecca Corley, D.F. Cowen, Catherine DE CLERCQ, James DeLaunay, Diyaselis Delgado, Thomas Delmeulle, Shuyang Deng, Paolo Desiati, Krijn D. de Vries, Gwenhaël de Wasseige, Tyce DeYoung, Juan Carlos Diaz-Velez, Stephen DiKerby, Markus Dittmer, Alba Domi, Lincoln Draper, Lasse Dueser, Daniel Durnford, Kaustav Dutta, Michael A. DuVernois, Thomas Ehrhardt, Leonhard Eidenschink, Anna Eimer, Philipp Eller, Enrico Ellinger, Dominik Elsässer, Ralph Engel, Hannah Erpenbeck, Waleed Esmail, Steven Young Eulig, John Evans, P. Evenson, Kwok Lung Fan, Ke Fang, Kareem Ramadan Farrag, Ali R. Fazely
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Le résumé fourni par la source
The IceCube Neutrino Observatory has measured an isotropic astrophysical neutrino flux through various detection channels for over 12 years. IceCube has also detected neutrino emission from the Galactic plane at the 4.5σ significance level compared to a background-only hypothesis, testing three models of Galactic diffuse emission: Fermi-LAT π$^0$, KRA$^5_γ$, KRA$^{50}_γ$. We present an analysis combining 3 detection channels: throughgoing tracks, starting tracks and cascades. The throughgoing track sample is restricted to the northern sky to reduce atmospheric backgrounds, while the starting track and cascade samples reduce the atmospheric neutrino backgrounds in the southern sky by vetoing accompanying muons. We will use this combination of event samples from 12.1 years of data to measure the Galactic neutrino spectrum in the TeV to PeV energy range and independently for multiple galactic regions in a model independent procedure. We will simultaneously measure the isotropic cosmic neutrino flux.
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Les sujets associés
Astrophysics and Cosmic PhenomenaNeutrino Physics ResearchScientific Research and Discoveries