Search for high-energy neutrino emission from hard X-ray AGN with IceCube

Goswami, Sreetama; Privon, George C.; Santander, M.

doi:10.1088/1748-0221/16/09/c09013

Cited by 4 publications

(2 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the neutrino emission from TXS 0506+056 is still not well understood [4]. This, together with the lack of convincing association of neutrinos with very energetic 𝛾-ray emission has made the community switch their interest to other wavelengths of the electromagnetic spectrum as X-rays [5,6] or radio-waves [7,8]. Moreover, the second evidence of a cosmic neutrino source, the nearby galaxy NGC 1068, shows a suppressed emission in gamma rays compared to the expected emission derived from the observed neutrino flux [9].…”

Section: Introductionmentioning

confidence: 99%

Search for Flaring Neutrino Sources with the ANTARES Neutrino Telescope

Garre¹,

Salesa²,

Sánchez³

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

View full text Add to dashboard Cite

The ANTARES Neutrino Telescope operated from the Mediterranean Sea and has collected valuable neutrino data from potential sources located in the equatorial Southern hemisphere and Galactic Center with a duty factor of over 70 %. Despite its small size, the ANTARES telescope has proved to be a powerful tool in neutrino astronomy benefiting from the good scattering properties of the Mediterranean water. In this contribution we have performed a time-dependent analysis in which the addition of temporal information from external observatories allows us to constrain the neutrino arrival time, reducing the expected background and boosting the detection potential of emitting sources. Being the nature or neutrino production still a mystery, we performed a complementary neutrino-to-neutrino follow-up of potential neutrino flares detected by the IceCube Telescope. We present the analysis strategy, optimisation procedure and results using the available ANTARES data from January 2007 to February 2020 with a brief discussion of their implications for the current state of multi-messenger and neutrino astronomy.

show abstract

Section: Introductionmentioning

confidence: 99%

Search for Flaring Neutrino Sources with the ANTARES Neutrino Telescope

Garre¹,

Salesa²,

Sánchez³

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

View full text Add to dashboard Cite

show abstract

“…Indeed, most of the neutrino activities has no γ-ray flare companion, like the 2014-2015 neutrino flares reported by IceCube Collaboration et al (2018a). Given that the pionic γ-ray photons may cascade down to X-ray band in blazar jets with strong photons fields, a stacking analysis of Swift BASS 6 objects (Goswami et al 2021) and a time-dependent search using the position of X-ray selected blazars from 5BZCat (Sharma & O'Sullivan 2021) were proposed.…”

Section: Introductionmentioning

confidence: 99%

Hunting for neutrino emission from multi-frequency variable sources

Chang¹,

Arsioli²,

Li³

et al. 2022

Preprint

View full text Add to dashboard Cite

Pinpointing the neutrino sources is crucial to unveil the mystery of high-energy cosmic rays. The search for neutrino-source candidates from coincident neutrino-photon signatures and electromagnetic objects with peculiar flaring behaviors have the potential to increase our chances of finding neutrino emitters. In this paper, we first study the temporal correlations of astrophysical flares with neutrinos, considering a few hundreds of multi-frequency sources from ALMA, WISE, Swift, and Fermi in the containment regions of IceCube high-energy alerts. Furthermore, the spatial correlations between blazars and neutrinos are investigated using the subset of 10-year IceCube track-like neutrinos with around 250 thousand events. In the second test, we account for 2700 blazars with different types of flaring phases in addition to sole position. No significant neutrino emissions were found from our analyses. Our results indicate an interesting trend showing the infrared flaring stages of WISE blazars might be correlated with arrival times of the neutrino alerts. Possible overflow of neutrinos associated with two of our blazar sub-samples are also illustrated. One is characterized by a significant flaring lag in infrared with respect to γ-rays, like seen for TXS0506+056, and the other is characterized by highly simultaneous infrared and γ-ray flares. These phenomena suggest the need to improve current multi-frequency light-curve catalogs to pair with the advent of more sensitive neutrino observatories.

show abstract

Time-integrated constraint on neutrino flux of CHIME fast radio burst sources with 10-yr IceCube point-source data

Luo,

Zhang

2024

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

Despite numerous studies, the sources of IceCube cosmic neutrinos are mostly unidentified. Utilizing recently released IceCube neutrino and CHIME fast radio burst (FRB) catalogues, we examine the possibility of an association between neutrinos and CHIME/FRB catalogue 1 FRBs for both the entire FRB population and individual FRBs using the unbinned maximum likelihood method. Our results do not directly support the possibility of the above-mentioned association with three weighting schemes: equal, total radio fluence, and event rate. We then attempt to constrain the diffuse muon neutrino flux upper limit from CHIME/FRB catalogue 1 FRBs. After considering a completeness correction, we find the 95 per cent diffuse muon neutrino flux upper limit at $100 \,\mathrm{T}\mathrm{eV}$ for all FRB sources in the universe to be ${\sim} 1.01 \times 10^{-18} \,\mathrm{G}^{-1}\mathrm{eV}\mathrm{/}\,\mathrm{c}\mathrm{m}^{2}\,{\rm s}^{-1}\rm {sr}^{-1}$, or ${\sim} 70.3~{{\ \rm per\ cent}}$ of the 10-year diffuse neutrino flux observed by IceCube. Our results match the non-detection results of other studies, but we do not rule out FRBs being a significant contributor to the diffuse neutrino flux measured by IceCube.

show abstract

Search for high-energy neutrino emission from hard X-ray AGN with IceCube

Cited by 4 publications

References 45 publications

Search for Flaring Neutrino Sources with the ANTARES Neutrino Telescope

Search for Flaring Neutrino Sources with the ANTARES Neutrino Telescope

Hunting for neutrino emission from multi-frequency variable sources

Time-integrated constraint on neutrino flux of CHIME fast radio burst sources with 10-yr IceCube point-source data

Contact Info

Product

Resources

About