TeV neutrinos from supernova remnants embedded in giant molecular clouds

Cavasinni, V.; Grasso, Dario; Maccione, Luca

doi:10.1016/j.astropartphys.2006.04.009

Cited by 29 publications

(25 citation statements)

References 35 publications

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“…Molecular clouds surrounding SNRs can serve as target for high-energy protons (or heavier nuclei) accelerated by SNR shocks to produce high-energy γ rays and neutrinos (Beall 2006). These models predict a high correlation of the expected neutrino flux with the observed γ -ray emission (Cavasinni et al 2006). We stack sources from a catalog of close molecular clouds associated with SNRs, which were observed at high energy by AGILE, Fermi, VERITAS, H.E.S.S., and MAGIC (Abdo et al 2009a(Abdo et al , 2009b(Abdo et al , 2010cFiasson et al 2009).…”

Section: The Likelihood Search Methodsmentioning

confidence: 99%

SEARCH FOR TIME-INDEPENDENT NEUTRINO EMISSION FROM ASTROPHYSICAL SOURCES WITH 3 yr OF IceCube DATA

Aartsen

Abbasi

Abdou

et al. 2013

ApJ

105

129

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We present the results of a search for neutrino point sources using the IceCube data collected between 2008 April and 2011 May with three partially completed configurations of the detector: the 40-, 59-, and 79-string configurations. The live-time of this data set is 1040 days. An unbinned maximum likelihood ratio test was used to search for an excess of neutrinos above the atmospheric background at any given direction in the sky. By adding two more years of data with improved event selection and reconstruction techniques, the sensitivity was improved by a factor of 3.5 or more with respect to the previously published results obtained with the 40-string configuration of IceCube. We performed an all-sky survey and a dedicated search using a catalog of a priori selected objects observed by other telescopes. In both searches, the data are compatible with the background-only hypothesis. In the absence of evidence for a signal, we set upper limits on the flux of muon neutrinos. For an E −2 neutrino spectrum, the observed limits are (0.9-5) × 10 −12 TeV −1 cm −2 s −1 for energies between 1 TeV and 1 PeV in the northern sky and (0.9-23.2) × 10 −12 TeV −1 cm −2 s −1 for energies between 10 2 TeV and 10 2 PeV in the southern sky. We also report upper limits for neutrino emission from groups of sources that were selected according to theoretical models or observational parameters and analyzed with a stacking approach. Some of the limits presented already reach the level necessary to quantitatively test current models of neutrino emission.

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Section: The Likelihood Search Methodsmentioning

confidence: 99%

SEARCH FOR TIME-INDEPENDENT NEUTRINO EMISSION FROM ASTROPHYSICAL SOURCES WITH 3 yr OF IceCube DATA

Aartsen

Abbasi

Abdou

et al. 2013

ApJ

105

129

View full text Add to dashboard Cite

show abstract

“…Then we account for neutrino oscillations. Their effect is to almost equally redistribute the composition among the three flavors [13]. We only consider proton and helium CRs/gas -as for -rays -since heavier nuclear species give a negligible contribution in the energy range we cover in this work [14].…”

Section: Diffuse Galactic Neutrino Spectra Obtained With Kra Modelmentioning

confidence: 99%

Interpretation of astrophysical neutrinos observed by IceCube experiment by setting Galactic and extra-Galactic spectral components

Marinelli

Gaggero

Grasso

et al. 2016

EPJ Web of Conferences

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Abstract. The last IceCube catalog of High Energy Starting Events (HESE) obtained with a livetime of 1347 days comprises 54 neutrino events equally-distributed between the three families with energies between 25 TeV and few PeVs. Considering the homogeneous flavors distribution (1:1:1) and the spectral features of these neutrinos the IceCube collaboration claims the astrophysical origin of these events with more than 5 . The spatial distribution of cited events does not show a clear correlation with known astrophysical accelerators leaving opened both the Galactic and the extra-Galactic origin interpretations. Here, we compute the neutrino diffuse emission of our Galaxy on the basis of a recently proposed phenomenological model characterized by radially-dependent cosmic-ray (CR) transport properties. We show that the astrophysical spectrum measured by IceCube experiment can be well explained adding to the diffuse Galactic neutrino flux (obtained with this new model) a extra-Galactic component derived from the astrophysical muonic neutrinos reconstructed in the Northern hemisphere. A good agreement between the expected astrophysical neutrino flux and the IceCube data is found for the full sky as well as for the Galactic plane region.

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“…We computed its spectrum as described in [13,14] accounting for neutrino oscillations the effect of which is to redistribute the flux among the three flavors almost equally.…”

Section: Implications For Neutrino Astronomymentioning

confidence: 99%

Anomalies in the gamma-ray diffuse emission of the Galaxy and implications for the interpretation of IceCube results

et al. 2017

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Abstract. Several independent analyzes of Fermi-LAT results found evidences of an excess of γ-ray diffuse emission along the inner Galactic plane and of a related spatial dependence of the cosmic ray (CR) proton spectral index. These features are not accounted for by conventional models of CR transport. We show that a phenomenological model accounting for those results in terms of spatial dependent CR transport also reproduces the γ-ray excess found by Milagro at 15 TeV in the inner Galactic plane and by H.E.S.S. in the Galactic center. We then use that model to compute the neutrino emission along the Galactic plane finding that is significantly larger than expected on the basis of conventional models. This emission is compatible with ANTARES upper limits and may soon be detected by IceCube or, more likely, by Km3NeT.

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TeV neutrinos from supernova remnants embedded in giant molecular clouds

Cited by 29 publications

References 35 publications

SEARCH FOR TIME-INDEPENDENT NEUTRINO EMISSION FROM ASTROPHYSICAL SOURCES WITH 3 yr OF IceCube DATA

SEARCH FOR TIME-INDEPENDENT NEUTRINO EMISSION FROM ASTROPHYSICAL SOURCES WITH 3 yr OF IceCube DATA

Interpretation of astrophysical neutrinos observed by IceCube experiment by setting Galactic and extra-Galactic spectral components

Anomalies in the gamma-ray diffuse emission of the Galaxy and implications for the interpretation of IceCube results

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