A new multi-messenger description of starburst galaxies emission: perspectives for neutrino and gamma-ray observations
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A new multi-messenger description of starburst galaxies emission : perspectives for neutrino and gamma-ray observations. / Marinelli, Antonio; Ambrosone, Antonio; Chianese, Marco; Fiorillo, Damiano; Miele, Gennaro; Pisanti, Ofelia.
In: Astronomische Nachrichten, Vol. 344, No. 1-2, e220137, 26.01.2023.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - A new multi-messenger description of starburst galaxies emission
T2 - perspectives for neutrino and gamma-ray observations
AU - Marinelli, Antonio
AU - Ambrosone, Antonio
AU - Chianese, Marco
AU - Fiorillo, Damiano
AU - Miele, Gennaro
AU - Pisanti, Ofelia
PY - 2023/1/26
Y1 - 2023/1/26
N2 - Star-forming and starburst galaxies (SBGs), which are well-known cosmic-ray (CR) reservoirs, are expected to emit gamma rays and neutrinos predominantly via hadronic collisions. In this work we analyze the 10-year Fermi-Low Energy Technique (LAT) spectral energy distributions of 13 nearby galaxies by means of a physical model that accounts for high-energy proton transport in starburst nuclei and includes the contribution of primary and secondary electrons. In particular, we test the hypothesis that the observed gamma-ray fluxes are mostly due to star-forming activity, which is in agreement with the available star formation rates coming from infrared (IR) and ultraviolet (UV) observations. Through this observation-based approach, we determine the most-likely neutrino counterparts from star-forming and SBGs and quantitatively assess the ability of current and upcoming neutrino telescopes to detect them as point-like sources. We also generate mock gamma-ray data to simulate the Cherenkov Telescope Array (CTA) performance in detecting these sources. Moreover, we propose a test to discriminate between the two different CR transport models for the starburst nuclei by looking at the different gamma-ray expectations. We point out that current data already gives a slight preference to CR models, which are dominated by advection.
AB - Star-forming and starburst galaxies (SBGs), which are well-known cosmic-ray (CR) reservoirs, are expected to emit gamma rays and neutrinos predominantly via hadronic collisions. In this work we analyze the 10-year Fermi-Low Energy Technique (LAT) spectral energy distributions of 13 nearby galaxies by means of a physical model that accounts for high-energy proton transport in starburst nuclei and includes the contribution of primary and secondary electrons. In particular, we test the hypothesis that the observed gamma-ray fluxes are mostly due to star-forming activity, which is in agreement with the available star formation rates coming from infrared (IR) and ultraviolet (UV) observations. Through this observation-based approach, we determine the most-likely neutrino counterparts from star-forming and SBGs and quantitatively assess the ability of current and upcoming neutrino telescopes to detect them as point-like sources. We also generate mock gamma-ray data to simulate the Cherenkov Telescope Array (CTA) performance in detecting these sources. Moreover, we propose a test to discriminate between the two different CR transport models for the starburst nuclei by looking at the different gamma-ray expectations. We point out that current data already gives a slight preference to CR models, which are dominated by advection.
KW - high-energy neutrinos
KW - non-thermal emission
KW - starburst galaxies
KW - STAR-FORMATION
KW - FERMI-LAT
KW - TRANSPORT
KW - ORIGIN
U2 - 10.1002/asna.20220137
DO - 10.1002/asna.20220137
M3 - Journal article
VL - 344
JO - Astronomische Nachrichten
JF - Astronomische Nachrichten
SN - 0004-6337
IS - 1-2
M1 - e220137
ER -
ID: 342439161