Browsing Department of Physics and Technology by Title

Now showing items 892-911 of 2190

    • Machine Learning-Based Retrieval of Total Ozone Column Amount and Cloud Optical Depth from Irradiance Measurements 

      Sztipanov, Milos; Krizsán, Levente; Li, Wei; Stamnes, Jakob J.; Svendby, Tove Marit; Stamnes, Knut (Journal article; Peer reviewed, 2024)
      A machine learning algorithm combined with measurements obtained by a NILU-UV irradiance meter enables the determination of total ozone column (TOC) amount and cloud optical depth (COD). In the New York City area, a NILU-UV ...

    • MAGIC observations provide compelling evidence of hadronic multi-TeV emission from the putative PeVatron SNR G106.3+2.7 

      Abe, H.; Abe, S.; Acciari, V.A.; Agudo, I.; Aniello, T.; Ansoldi, S.; Antonelli, L.A.; Arbet Engels, Engels; Arcaro, C.; Artero, M.; Asano, K.; Baack, D.; Babić, A.; Baquero, A.; Barres De Almeida, De; Barrio, J.A.; Batković, I.; Baxter, J.; Becerra González, Gonzalez; Bednarek, W.; Bernardini, E.; Bernardos, M.; Berti, A.; Besenrieder, J.; Bhattacharyya, W.; Bigongiari, C.; Biland, A.; Blanch, O.; Bonnoli, G.; Bošnjak, Z.; Burelli, I.; Busetto, G.; Carosi, R.; Carretero-Castrillo, M.; Castro-Tirado, A.J.; Ceribella, G.; Chai, Y.; Chilingarian, A.; Cikota, S.; Colombo, E.; Contreras, J.L.; Cortina, J.; Covino, S.; D'Amico, Giacomo; D'Elia, V.; Da Vela, Vela; Dazzi, F.; De Angelis, Angelis; De Lotto, Lotto; Del Popolo, Popolo; Delfino, M.; Delgado, J.; Delgado Mendez, Mendez; Depaoli, D.; Di Pierro, Pierro; Di Venere, Venere; Do Souto Espiñeira, Souto; Dominis Prester, Prester; Donini, A.; Dorner, D.; Doro, M.; Elsaesser, D.; Emery, G.; Escudero, J.; Fallah Ramazani, Ramazani; Fariña, L.; Fattorini, A.; Font, L.; Fruck, C.; Fukami, S.; Fukazawa, Y.; García López, Lopez; Garczarczyk, M.; Gasparyan, S.; Gaug, M.; Giesbrecht Paiva, Paiva; Giglietto, N.; Giordano, F.; Gliwny, P.; Godinović, N.; Grau, R.; Green, D.; Green, J.G.; Hadasch, D.; Hahn, A.; Hassan, T.; Heckmann, L.; Herrera, J.; Hrupec, D.; Hütten, M.; Imazawa, R.; Inada, T.; Iotov, R.; Ishio, K.; Jiménez Martínez, Martinez; Jormanainen, J.; Kerszberg, D.; Kobayashi, Y.; Kubo, H.; Kushida, J.; Lamastra, A.; Lelas, D.; Leone, F.; Lindfors, E.; Linhoff, L.; Lombardi, S.; Longo, F.; López-Coto, R.; López-Moya, M.; López-Oramas, A.; Loporchio, S.; Lorini, A.; Lyard, E.; MacHado De Oliveira Fraga, De; Majumdar, P.; Makariev, M.; Maneva, G.; Mang, N.; Manganaro, M.; Mangano, S.; Mannheim, K.; Mariotti, M.; Martínez, M.; Mas Aguilar, Aguilar; Mazin, D.; Menchiari, S.; Mender, S.; Mićanović, S.; Miceli, D.; Miener, T.; Miranda, J.M.; Mirzoyan, R.; Molina, E.; Mondal, H.A.; Moralejo, A.; Morcuende, D.; Moreno, V.; Nakamori, T.; Nanci, C.; Nava, L.; Neustroev, V.; Nievas Rosillo, Rosillo; Nigro, C.; Nilsson, K.; Nishijima, K.; Njoh Ekoume, Ekoume; Noda, K.; Nozaki, S.; Ohtani, Y.; Oka, T.; Okumura, A.; Otero-Santos, J.; Paiano, S.; Palatiello, M.; Paneque, D.; Paoletti, R.; Paredes, J.M.; Pavletić, L.; Persic, M.; Pihet, M.; Pirola, G.; Podobnik, F.; Prada Moroni, Moroni; Prandini, E.; Principe, G.; Priyadarshi, C.; Rhode, W.; Ribó, M.; Rico, J.; Righi, C.; Rugliancich, A.; Sahakyan, N.; Saito, T.; Sakurai, S.; Satalecka, K.; Saturni, F.G.; Schleicher, B.; Schmidt, K.; Schmuckermaier, F.; Schubert, J.L.; Schweizer, T.; Sitarek, J.; Sliusar, V.; Sobczynska, D.; Spolon, A.; Stamerra, A.; Strišković, J.; Strom, D.; Strzys, M.; Suda, Y.; Surić, T.; Tajima, H.; Takahashi, M.; Takeishi, R.; Tavecchio, F.; Temnikov, P.; Terauchi, K.; Terzić, T.; Teshima, M.; Tosti, L.; Truzzi, S.; Tutone, A.; Ubach, S.; Van Scherpenberg, Scherpenberg; Vazquez Acosta, Acosta; Ventura, S.; Verguilov, V.; Viale, I.; Vigorito, C.F.; Vitale, V.; Vovk, I.; Walter, R.; Will, M.; Wunderlich, C.; Yamamoto, T.; Zarić, D. (Journal article; Peer reviewed, 2023)
      Context. Certain types of supernova remnants (SNRs) in our Galaxy are assumed to be PeVatrons, capable of accelerating cosmic rays (CRs) to ~ PeV energies. However, conclusive observational evidence for this has not yet ...

    • Magnetic coordinate systems 

      Laundal, Karl Magnus; Richmond, Arthur D. (Peer reviewed; Journal article, 2017-03)
      Geospace phenomena such as the aurora, plasma motion, ionospheric currents and associated magnetic field disturbances are highly organized by Earth’s main magnetic field. This is due to the fact that the charged particles ...

    • Magnetic docking stations for remotely powered light emitting diodes 

      Helseth, Lars Egil; Wen, Hanzhen (Journal article; Peer reviewed, 2022)
      Light emitting diodes (LEDs) are efficient light sources which due to low power consumption often are considered for demonstrations of wireless energy transmission. It is often not only necessary to power these light sources ...

    • Magnetic Effects of Plasma Pressure Gradients in the Upper F Region 

      Laundal, Karl Magnus; Hatch, Spencer Mark; Moretto, Therese (Peer reviewed; Journal article, 2019)
      The Swarm satellites fly at altitudes that at polar latitudes are generally assumed to only contain currents that are aligned with the local magnetic field. Therefore, disturbances along the main field direction are mainly ...

    • Magnetic Reconnection and Heavy Ions 

      Kolstø, Håkon Midthun (Doctoral thesis, 2022-09-28)
      Majoriteten av materien i det observerbare universet eksisterer i form av en plasma. Plasmaet er karakteriseres av en samling ladede partikler som oppfyller visse elektrodynamiske egenskaper hvor den typiske potensielle ...

    • Magnetic Reconnection in a Quasi-Parallel Shock: Two-Dimensional Local Particle-in-Cell Simulation 

      Bessho, Naoki; Chen, Lijen; Wang, Shan; Hesse, Michael; Wilson, Lynn B. (Peer reviewed; Journal article, 2019)
      Magnetic reconnection in a quasi‐parallel bow shock is investigated with two‐dimensional local particle‐in‐cell simulations. In the shock transition and downstream regions, large amplitude magnetic fluctuations exist, and ...

    • Magnetic Reconnection in Three Dimensions: Modeling and Analysis of Electromagnetic Drift Waves in the Adjacent Current Sheet 

      Ergun, Robert E; Hoilijoki, Sanni; Ahmadi, N.; Schwartz, S.J.; Wilder, F.D.; Drake, James F.; Hesse, Michael; Shay, Michael A.; Ji, H.; Yamada, M; Graham, Daniel B.; Cassak, P.A.; Swisdak, M; Burch, J. L.; Torbert, R.B.; Holmes, JC; Stawarz, JE; Goodrich, Katherine A; Eriksson, S.; Strangeway, Robert J.; LeContel, O (Journal article; Peer reviewed, 2019)
      We present a model of electromagnetic drift waves in the current sheet adjacent to magnetic reconnection at the subsolar magnetopause. These drift waves are potentially important in governing 3‐D structure of subsolar ...

    • Magnetic Resonance Imaging of Hydrate Phase Transitions in Sediments 

      Veland, Veronica Flæsland (Master thesis, 2017-12-21)
      Natural gas hydrates, simplified described as gas compressed in ice, are a substance existing in large quantities around the world. Their existence requires elevated pressures and low temperature. They are therefore found ...

    • Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation 

      Almenningen, Stian; Fotland, Per; Ersland, Geir (Peer reviewed; Journal article, 2019-08-22)
      This paper reports formation and dissociation patterns of methane hydrate in sandstone. Magnetic resonance imaging spatially resolved hydrate growth patterns and liberation of water during dissociation. A stacked core ...

    • Magnetospheric Flux Throughput in the Dungey Cycle: Identification of Convection State During 2010 

      Milan, Stephen Eric; Carter, Jennifer Alyson; Sangha, Harneet; Bower, G.E.; Anderson, Brian J. (Journal article; Peer reviewed, 2021)
      We quantify the contributions of different convection states to the magnetic flux throughput of the magnetosphere during 2010. To do this we provide a continuous classification of convection state for the duration of 2010 ...

    • Magnetospheric Multiscale Observations of an Expanding Oxygen Wave in Magnetic Reconnection 

      Kolstø, Håkon Midthun; Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Chen, Li-Jen; Tenfjord, Paul; Spinnangr, Susanne Flø; Kwagala, Norah Kaggwa (Journal article; Peer reviewed, 2021)
      Heavier plasma species such as oxygen ions can have a large impact on the magnetic reconnection process. It has been hypothesized that the acceleration of demagnetized oxygen ions by the Hall electric field will lead to ...

    • Magnetospheric response and reconfiguration times following IMF By reversals 

      Tenfjord, Paul Arne Riksheim; Østgaard, Nikolai; Strangeway, Robert J.; Haaland, Stein; Snekvik, Kristian; Laundal, Karl Magnus; Reistad, Jone Peter; Milan, Stephen Eric (Peer reviewed; Journal article, 2017-01)
      The interaction between the interplanetary magnetic field (IMF) and the geomagnetic field at the dayside magnetopause leads to transfer of momentum and energy which changes the magnetospheric configuration, but only after ...

    • The Magnitude of IMF By Influences the Magnetotail Response to Solar Wind Forcing 

      Holappa, Lauri; Reistad, Jone Peter; Ohma, Anders; Gabrielse, Christine; Sur, Dibyendu (Journal article; Peer reviewed, 2021)
      The dynamics of substorms are known to be dominated by the North-South (Bz) component of the Interplanetary Magnetic Field (IMF), which is the most important driver of the dayside reconnection. Even though the dawn-dusk ...

    • Manipulating dynamical Rabi-splitting with two-color laser pulses 

      Agueny, Hicham; Taoutioui, Abdelmalek; Adnani, Younes; Makhoute, Abdelkader (Peer reviewed; Journal article, 2019)
      We theoretically investigate strong-field ionization of hydrogen atoms by orthogonally polarized two-color (OTC) laser pulses consisting of a fundamental field that is resonant with the 1s − 2p transition and its second ...

    • The Mansurov effect: Seasonal and solar wind sector structure dependence 

      Edvartsen, Jone Øvretvedt; Maliniemi, Ville Aleksi; Nesse, Hilde; Hatch, Spencer Mark (Journal article; Peer reviewed, 2023)
      We investigate the connection between the interplanetary magnetic field (IMF) By-component and polar surface pressure, also known as the Mansurov effect. The aim of the investigation is to unravel potential dependencies ...

    • The Mansurov effect: Statistical significance and the role of autocorrelation 

      Edvartsen, Jone Øvretvedt; Maliniemi, Ville Aleksi; Tyssøy, Hilde Nesse; Asikainen, Timo; Hatch, Spencer Mark (Journal article; Peer reviewed, 2022)
      The Mansurov effect is related to the interplanetary magnetic field (IMF) and its ability to modulate the global electric circuit, which is further hypothesized to impact the polar troposphere through cloud generation ...

    • Mapping collinear in-medium parton splittings 

      Dominguez, Fabio; Milhano, Jose; Salgado, Carlos; Tywoniuk, Konrad; Vila, Victor (Journal article; Peer reviewed, 2020-01-07)
      We map the spectrum of 1→2 parton splittings inside a medium characterized by a transport coefficient q^ onto the kinematical Lund plane, taking into account the finite formation time of the process. We discuss the distinct ...

    • Mapping Gas Hydrate Dynamics in Porous Media : Experimental Studies of Gas Hydrates as a Source of CH4 and Sink for CO2 

      Almenningen, Stian (Doctoral thesis, 2020-03-20)
      The world needs more energy and the energy has to be more sustainable with respect to carbon dioxide (CO2) emissions. This is the backdrop for studying the diverse applications of gas hydrates in nature. The ice-like ...

    • Marine seismics with a pulsed combustion source and Pseudo Noise codes 

      Askeland, Bjørn; Hobæk, Halvor; Mjelde, Rolf (Peer reviewed; Journal article, 2007-03)
      There has been an ongoing debate for years of how dangerous seismic surveys are with respect to marine life. Marine seismics is today dominated by airgun technology, where high energy is generated by a release of compressed ...