Results 11 to 20 of about 141 (133)

Studying bioluminescence flashes with the ANTARES deep‐sea neutrino telescope

open access: yesLimnology and Oceanography: Methods, Volume 21, Issue 11, Page 734-760, November 2023., 2023
Abstract We develop a novel technique to exploit the extensive data sets provided by underwater neutrino telescopes to gain information on bioluminescence in the deep sea. The passive nature of the telescopes gives us the unique opportunity to infer information on bioluminescent organisms without actively interfering with them. We propose a statistical
Nico Reeb   +145 more
wiley   +1 more source

A tool to understand emission mechanisms of blazars through their high‐energy gamma‐ray emission

open access: yesAstronomische Nachrichten, Volume 344, Issue 6, August 2023., 2023
The blazar SED is characterized by two energy components. Evidence suggests that the low‐energy component is generated by the synchrotron mechanism, but for the high‐energy component, the mechanism is still uncertain. Two main models have been proposed to explain this emission. According to the leptonic model, a correlation between the emission of both
Mabel Osorio   +3 more
wiley   +1 more source

First High‐Speed Video Camera Observations of a Lightning Flash Associated With a Downward Terrestrial Gamma‐Ray Flash

open access: yesGeophysical Research Letters, Volume 50, Issue 14, 28 July 2023., 2023
Abstract In this paper, we present the first high‐speed video observation of a cloud‐to‐ground lightning flash and its associated downward‐directed Terrestrial Gamma‐ray Flash (TGF). The optical emission of the event was observed by a high‐speed video camera running at 40,000 frames per second in conjunction with the Telescope Array Surface Detector ...
R. U. Abbasi   +143 more
wiley   +1 more source

Long‐Term Density Trend in the Mesosphere and Lower Thermosphere From Occultations of the Crab Nebula With X‐Ray Astronomy Satellites

open access: yesJournal of Geophysical Research: Space Physics, Volume 128, Issue 2, February 2023., 2023
Abstract We present long‐term density trends of the Earth's upper atmosphere at altitudes between 71 and 116 km, based on atmospheric occultations of the Crab Nebula observed with X‐ray astronomy satellites, ASCA, RXTE, Suzaku, NuSTAR, and Hitomi. The combination of the five satellites provides a time period of 28 years from 1994 to 2022.
Satoru Katsuda   +11 more
wiley   +1 more source

Simultaneous Space‐Based Observations of TGFs and Lightning Optical Emission: Characteristics of Lightning

open access: yesJournal of Geophysical Research: Space Physics, Volume 128, Issue 1, January 2023., 2023
Abstract A previous study of the relative timing between optical lightning emission detected by the Geostationary Lightning Mapper and a sample of 24 simultaneous Terrestrial Gamma‐ray Flashes (TGFs) triggering the Fermi Gamma‐ray Burst Monitor has shown that the gamma‐ray signal appears at the same time as or slightly before the lightning stroke ...
Samer T. Alnussirat   +3 more
wiley   +1 more source

The Geometric Correlations of Leptonic Mixing Parameters

open access: yesAdvances in High Energy Physics, Volume 2023, Issue 1, 2023., 2023
Leptonic mixing patterns are usually extracted on the basis of groups or algebraic structures. In this paper, we introduce an alternative geometric method to study the correlations between the leptonic mixing parameters. At the 3σ level of the recent global fit data of neutrino oscillations, the distribution of the scattered points of the angles ...
Ding-Hui Xu   +2 more
wiley   +1 more source

Exploring the frontiers of deep underground sciences and engineering—China Yunlong Lake Laboratory is striving to be the best

open access: yesDeep Underground Science and Engineering, Volume 1, Issue 2, Page 131-137, December 2022., 2022
General plan of the in‐situ experiment (WNS) base. Abstract This paper introduces the establishment of deep underground infrastructure for science and engineering research. First, the representative deep underground research laboratories and facilities in the world and their functions were summarized and reviewed.
Lihua Hu   +5 more
wiley   +1 more source

Knowledge as a collective status

open access: yesAnalytic Philosophy, Volume 63, Issue 4, Page 277-304, December 2022., 2022
Abstract While social epistemology is a diverse field, much of it still understands knowledge as an individual status—albeit an individual status that crucially depends on various social factors (such as testimony). Further, the literature on group knowledge until now has primarily focused on limited, specialized groups that may be said to know this or
Jeremy Randel Koons
wiley   +1 more source

The road toward imaging a black hole: A personal perspective

open access: yesNatural Sciences, Volume 2, Issue 4, October 2022., 2022
The article describes the authors personal journey towards developig the Event Horizon Telescope and the first image of a black hole. Left: predcition made by the author and collaborators proposing the black hole imaging in 2000. Right: the two images observed and published by the Event Horizon Telescope in 2019 and 2022.
Heino Falcke
wiley   +1 more source

Towards a sub-percent precision measurement of sin2 θ 13 with reactor antineutrinos

open access: yesJournal of High Energy Physics, 2023
Measuring the neutrino mixing parameter sin2 θ 13 to the sub-percent precision level could be necessary in the next ten years for the precision unitary test of the PMNS matrix.
Jinnan Zhang, Jun Cao
doaj   +1 more source

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