STRAW (STRings for Absorption length in Water): pathfinder for a neutrino telescope in the deep Pacific Ocean

Boehmer, M.; Bosma, Jeff; Brussow, Dirk; Farmer, L.; Fruck, C.; Gernhäuser, R.; Gärtner, Andreas; Grant, D.; Henningsen, Felix; Hiller, S.; Hoch, M.; Holzapfel, K.; Jenkyns, Reyna; Khera, Na.; Khera, Ni.; Krings, K.; Kopper, C.; Kulin, I.; Leismüller, Klaus; Little, Joseph M.; Macoun, P.; Michel, J.; Morley, Mike; Papp, L.; Pirenne, B.; Qiu, C.; Rea, Immacolata Carmen; Resconi, E.; Round, Adrian; Ruskey, Albert; Spannfellner, Christian; Traxler, M.

doi:10.1088/1748-0221/14/02/p02013

Cited by 24 publications

(43 citation statements)

References 23 publications

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“…with χ 2 min the χ 2 of the best-fit realisation. The scale factor S = 1/ χ 2 min /ndf, where ndf the number of free parameters of the fit, is an approximate correction (Rosenfeld 1975) to enlarge the uncertainty because of a poor minimum χ 2 that might either signify underestimated experimental uncertainties or simplified model assumptions. Equation 27, defines the confidence regions illustrated in Figure 7 in units of standard deviations.…”

Section: Systematic Uncertaintiesmentioning

confidence: 99%

High-energy neutrino flux from individual blazar flares

Oikonomou

Murase

Padovani

et al. 2019

Monthly Notices of the Royal Astronomical Society

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Motivated by the recently reported evidence of an association between a high-energy neutrino and a γ-ray flare from the blazar TXS 0506+056, we calculate the expected high-energy neutrino signal from past, individual flares, from twelve blazars, selected in declinations favourable for detection with IceCube. To keep the number of free parameters to a minimum, we mainly focus on BL Lac objects and assume the synchrotron self-Compton mechanism produces the bulk of the high-energy emission. We consider a broad range of the allowed parameter space for the efficiency of proton acceleration, the proton content of BL Lac jets, and the presence of external photon fields. To model the expected neutrino fluence we use simultaneous multi-wavelength observations. We find that in the absence of external photon fields and with jet proton luminosity normalised to match the observed production rate of ultra-high-energy cosmic rays, individual flaring sources produce a modest neutrino flux in IceCube, N IC,10yr ν µ ,>100 TeV 10 −3 muon neutrinos with energy exceeding 100 TeV, stacking ten years of flare periods selected in the > 800 MeV Fermi energy range, from each source. Under optimistic assumptions about the jet proton luminosity and in the presence of external photon fields, we find that the two most powerful sources in our sample, AO 0235+164, and OJ 287, would produce, in total, N IC×10,10yr ν µ ,all flares,>100 TeV ≈ 3 muon neutrinos during Fermi flaring periods, in future neutrino detectors with total instrumented volume ∼ ten times larger than IceCube, or otherwise, constrain the proton luminosity of blazar jets.

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Section: Systematic Uncertaintiesmentioning

confidence: 99%

High-energy neutrino flux from individual blazar flares

Oikonomou

Murase

Padovani

et al. 2019

Monthly Notices of the Royal Astronomical Society

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“…The latter will cause a bipolar swing of the pulse and thus effectively cuts it short. With this technique and selected LED-types of 365, 405, 465 and 605 nm, we achieved FWHMs of 4 − 8 ns with intensities ranging from 10 6 − 10 9 photons per pulse which is linear with supply voltage [1,10]. However, the performance of the driver is highly dependent on the used type of LED and requires a proper selection process.…”

Section: Pos(icrc2019)908mentioning

confidence: 99%

“…The Precision Optical Calibration Module (POCAM) [1] [2][3] is a self-calibrating lightemitter device for the in-situ calibration of large-volume neutrino detectors. Its primary goals are the reduction and better understanding of systematic experimental uncertainties within the detector -most notably the properties of the optical detection medium as well as efficiency and angular acceptance of the photosensor instrumentation.…”

Section: The Precision Optical Calibration Modulementioning

confidence: 99%

“…These sensors monitor the pulse time onset and intensity characteristics in-situ with an anticipated precision of a few percent. As described in [1] and [2], the POCAM baseline design is composed of four sub-systems: pressure housing, analog and digital electronics and the light diffusion and emission components. The analog and digital boards are located in both hemispheres to allow for their independent operation.…”

Section: The Precision Optical Calibration Modulementioning

confidence: 99%

“…The analog and digital boards are located in both hemispheres to allow for their independent operation. In the following we will describe the baseline design operating in the STRAW experiment [1]. The device goals and design improvements for the IceCube Upgrade [7] will then be discussed in…”

Section: The Precision Optical Calibration Modulementioning

confidence: 99%

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