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11.
Ultrahigh energy neutrino follow-up of Gravitational Wave Event GW150914 with the Pierre Auger Observatory
Marta Trini, Pablo Pieroni, Zlatka Zas, Francisco Pedreira, Jaime Alvarez-Muňiz, Lili Yang, elaborat, predštudija, študija

Najdeno v: ključnih besedah
Povzetek najdenega: ...UHE neutrinos, SD detector, Gravitational Waves...
Ključne besede: UHE neutrinos, SD detector, Gravitational Waves
Objavljeno: 29.11.2016; Ogledov: 2246; Prenosov: 0
.pdf Polno besedilo (881,65 KB)

12.
Impact of atmospheric effects on the energy reconstruction of air showers observed by the surface detectors of the Pierre Auger Observatory
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, A. Aab, 2017, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ...Pierre Auger Observatory (PAO), PAO Surface Detector, energy reconstruction, atmospheric effects...
Ključne besede: Pierre Auger Observatory (PAO), PAO Surface Detector, energy reconstruction, atmospheric effects
Objavljeno: 16.02.2017; Ogledov: 1832; Prenosov: 0
.pdf Polno besedilo (4,52 MB)

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An improved reconstruction method for the AMIGA detectors
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Juan Manuel Figueira, 2017, objavljeni znanstveni prispevek na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...AMIGA detector, Pierre Auger Observatory, reconstruction...
Ključne besede: AMIGA detector, Pierre Auger Observatory, reconstruction
Objavljeno: 16.02.2018; Ogledov: 1064; Prenosov: 80
.pdf Polno besedilo (563,55 KB)

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Stable carbon isotope analysis of selected halocarbons at parts per trillion concentration in an urban location
M Iqbal Mead, M Anwar H Khan, Ian D Bull, Iain R White, Graham Nickless, Dudley E Shallcross, 2008, izvirni znanstveni članek

Opis: ∂13C values of a suite of halocarbons have been determined in an urban background site in Bristol, UK. A novel mobile preconcentration system, based on the use of multi-adsorbent sample tubes, has been developed for trapping relatively large-volume air samples in potentially remote areas. An Adsorption Desorption System-Gas Chromatography-Electron Capture Detector was used to measure the mixing ratios of the selected halocarbon species, while a Gas ChromatographyCombustionIsotope Ratio Mass Spectrometer was used to determine ∂13C values. For the species with strong local sources, the variation of isotope ratios has been observed over the experimental period. Some of the results reported in the present study differ from previously reported values and reasons for this are discussed. The reporting of different ∂13C values for selected halocarbons from different areas in the present study suggests that ∂13C values may be used to determine the relative magnitudes of anthropogenic and biogenic sources.
Najdeno v: ključnih besedah
Povzetek najdenega: ...areas. An Adsorption Desorption System-Gas Chromatography-Electron Capture Detector was used to measure the mixing ratios...
Ključne besede: Adsorption Desorption System (ADS), Automated Thermal Desorber (ATD), Electron Capture Detector (ECD), Gas Chromatography (GC), Isotope Ratio Mass Spectrometry (IRMS)
Objavljeno: 18.07.2019; Ogledov: 646; Prenosov: 0
.pdf Polno besedilo (227,35 KB)

19.
Year-long measurements of C1-C3 halocarbons at an urban site and their relationship with meteorological parameters
Dudley E Shallcross, Brian G R Greally, Alison C Rivett, Damien Martin, Alan Knights, Graham Nickless, Ben Golledge, Iain R White, M Iqbal Mead, M Anwar K Khan, 2009, izvirni znanstveni članek

Opis: The mixing ratios of 11 C1–C3 halocarbons have been measured using a GC–twin‐linked ECD system over the period from October 2004 to December 2005 at an urban site in Bristol, UK. Time series and seasonal variations of the halocarbons were analysed over the period to determine biogenic and anthropogenic sources and sinks. Correlations between the target halocarbons were also observed, suggesting common sources within the area. Wind rose plots for all halocarbons have been used to assist in the determination of halocarbons sources. Halocarbon concentrations are highest at low‐wind speeds and decrease as wind speed increases, a few species (CCl4 and CH3Cl most notably) rise at very high‐wind speeds suggesting release from the Bristol Channel.
Najdeno v: ključnih besedah
Povzetek najdenega: ...system, anthropogenic halocarbons, biogenic halocarbons, electron capture detector, gas chromatography, methyl bromide...
Ključne besede: adsorption–desorption system, anthropogenic halocarbons, biogenic halocarbons, electron capture detector, gas chromatography, methyl bromide
Objavljeno: 18.07.2019; Ogledov: 594; Prenosov: 0
.pdf Polno besedilo (897,06 KB)

20.
Search for Anisotropy in the Ultra High Energy Cosmic Ray Spectrum using the Telescope Array Surface Detector
J. P. Lundquist, R.U. Abbasi, 2017, drugi članki ali sestavki

Opis: The Telescope Array (TA) experiment is located in the western desert of Utah, USA, and observes ultra high energy cosmic rays (UHECRs) in the Northern hemisphere. At the highest energies, E>10~EeV, the shape of cosmic ray energy spectrum may carry an imprint of the source density distribution along the line of sight different in different directions of the sky. In this study, we search for such directional variations in the shape of the energy spectrum using events observed with the Telescope Array's surface detector. We divide the TA field of view into two nearly equal-exposure regions: the "on-source" region which we define as ±30∘ of the supergalactic plane containing mostly nearby structures, and the complementary "off-source" region where the sources are further away on average. We compare the UHECR spectra in these regions by fitting them to the broken power law and comparing the resulting parameters. We find that the off-source spectrum has an earlier break at highest energies. The chance probability to obtain such or larger difference in statistically equivalent distributions is estimated as 6.2±1.1×10−4 (3.2σ) by a Monte-Carlo simulation. The observed difference in spectra is in a reasonable quantitative agreement with a simplified model that assumes that the UHECR sources trace the galaxy distribution from the 2MRS catalogue, primary particles are protons and the magnetic deflections can be neglected.
Najdeno v: ključnih besedah
Ključne besede: cosmic radiation: UHE, detector: surface, cosmic radiation: spectrum, cosmic radiation: energy spectrum, deflection: magnetic, numerical calculations: Monte Carlo, anisotropy
Objavljeno: 27.04.2020; Ogledov: 347; Prenosov: 18
.pdf Polno besedilo (169,05 KB)

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