Blar i Department of Physics and Technology på tittel
Viser treff 1810-1829 av 2104
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Searches for third-generation scalar leptoquarks in √s= 13 TeV pp collisions with the ATLAS detector
(Peer reviewed; Journal article, 2019-06-28)Limits are set on the pair production of scalar leptoquarks, where all possible decays of the leptoquark into a quark (t, b) and a lepton (τ, ν) of the third generation are considered. The limits are presented as a function ... -
Searches for transverse momentum dependent flow vector fluctuations in Pb-Pb and p-Pb collisions at the LHC
(Peer reviewed; Journal article, 2017-09)The measurement of azimuthal correlations of charged particles is presented for Pb-Pb collisions at \(\sqrt{s_{\rm NN}}=\) 2.76 TeV and p-Pb collisions at \(\sqrt{s_{\rm NN}}=\) 5.02 TeV with the ALICE detector at the CERN ... -
Searching for Dark Matter with the ATLAS and CTA Experiments
(Doctoral thesis, 2016-06-23)The existence of dark matter has been inferred by several experiments through measurements of its gravitational effects. However, dark matter has not been observed directly, meaning that we do not know what it is made of. ... -
Searching for the Higgs Boson in Pairs of Tau Leptons in Data from the ATLAS Experiment
(Doctoral thesis, 2013-01-11)One of the key questions in particle physics today, is the origin of the electroweak symmetry breaking. The answer to this question will most likely be solved with the data provided by the Large Hadron Collider which started ... -
SearchSearch for exclusive Higgs and Z boson decays to ϕγ and ργ with the ATLAS detector for exclusive Higgs and Z boson decays to ϕγ and ργ with the ATLAS detector
(Peer reviewed; Journal article, 2018-07-19)A search for the exclusive decays of the Higgs and Z bosons to a ϕ or ρ meson and a photon is performed with a pp collision data sample corresponding to an integrated luminosity of up to 35.6 fb−1 collected at 𝑠√=13 TeV ... -
Seasonal and hemispheric asymmetries of F‐region polar cap plasma density: Swarm and CHAMP observations
(Journal article; Peer reviewed, 2020)One of the primary mechanisms of loss of Earth's atmosphere is the persistent “cold” ( urn:x-wiley:jgra:media:jgra56068:jgra56068-math-0001 20 eV) ion outflow that has been observed in the magnetospheric lobes over large ... -
Seasonal and Solar Cycle Variations of Thermally Excited 630.0 nm Emissions in the Polar Ionosphere
(Peer reviewed; Journal article, 2018-08)Solar cycle and seasonal variations have been found in the occurrence of strong thermally excited 630.0 nm emissions in the polar ionosphere. Measurements from the European Incoherent Scatter Svalbard Radar have been used ... -
Seasonality and drivers of water column optical properties on the northwestern Barents Sea shelf
(Journal article; Peer reviewed, 2023)Hydrographic and bio-optical measurements were conducted along a south–north transect on the northwestern Barents Sea shelf from early spring to late summer in 2021. Strong climate change manifestations observed in this ... -
The Second AGILE MCAL Gamma-Ray Burst Catalog: 13 yr of Observations
(Journal article; Peer reviewed, 2022)We present the results of a systematic search and analysis of GRBs detected by the Astrorivelatore Gamma ad Immagini LEggero (AGILE) MiniCALorimeter (MCAL; 0.4–100 MeV) over a time frame of 13 yr, from 2007 to 2020 November. ... -
The Second Catalog of Interplanetary Network Localizations of Konus Short-duration Gamma-Ray Bursts
(Journal article; Peer reviewed, 2022)We present the catalog of InterPlanetary Network (IPN) localizations for 199 short-duration gamma-ray bursts (sGRBs) detected by the Konus-Wind (KW) experiment between 2011 January 1 and 2021 August 31, which extends the ... -
The seeding of ice algal blooms in Arctic pack ice: The multiyear ice seed repository hypothesis
(Peer reviewed; Journal article, 2017-07)During the Norwegian young sea ICE expedition (N-ICE2015) from January to June 2015 the pack ice in the Arctic Ocean north of Svalbard was studied during four drifts between 83° and 80°N. This pack ice consisted of a mix ... -
A seismic field test with a Low level Acoustic Combustion Source and Pseudo Noise codes
(Journal article, 2007-01-20)The Low level Acoustic Combustion Source (LACS) is a new type of pulsed underwater acoustic source with an output level of 0.5-1.0 barm peak to peak. The source is based on a combustion engine and intended for shallow ... -
The self-discharging of supercapacitors interpreted in terms of a distribution of rate constants
(Journal article; Peer reviewed, 2021)Supercapacitors are prone to self-discharging, which is most often measured as a voltage decrease with time under open circuit conditions. It is of substantial interest to find simple and general methods to extract information ... -
Semirelativistic Schrödinger Equation for Relativistic Laser-Matter Interactions
(Peer reviewed; Journal article, 2018-12)A semirelativistic formulation of light-matter interaction is derived using the so called propagation gauge and the relativistic mass shift. We show that relativistic effects induced by a superintense laser field can, to ... -
Separation and quantification of ionospheric convection sources: 1. A new technique
(Peer reviewed; Journal article, 2019-07-04)This paper describes a novel technique that allows separation and quantification of different sources of convection in the high‐latitude ionosphere. To represent the ionospheric convection electric field, we use the Spherical ... -
Separation and quantification of ionospheric convection sources: 2. The dipole tilt angle influence on reverse convection cells during northward IMF
(Peer reviewed; Journal article, 2019-07-04)This paper investigates the influence of Earth's dipole tilt angle on the reverse convection cells (sometimes referred to as lobe cells) in the Northern Hemisphere ionosphere during northward IMF, which we relate to ... -
A setup for electrical tests of ATLAS SCT barrel modules
(Master thesis, 2003)The ATLAS SemiConductor Tracker (SCT) is part of the inner detector in the ATLAS detector at the LHC complex at CERN. SCT will consist of a system of silicon strip detectors with digital readout, reading out space point ... -
A setup for electronic tests of ATLAS silicon strip detectors
(Master thesis, 2001) -
Severe and localized GNSS scintillation at the poleward edge of the nightside auroral oval during intense substorm aurora
(Peer reviewed; Journal article, 2015-12)In this paper we study how GPS, GLONASS, and Galileo navigation signals are compromised by strong irregularities causing severe phase scintillation (σϕ>1) in the nightside high-latitude ionosphere during a substorm on 3 ...