Browsing Øvrige samlinger by Author "de Jorge Henriques, Vasco Manuel"

Now showing items 1-20 of 21

  • An overall view of temperature oscillations in the solar chromosphere with ALMA 
    Jafarzadeh, Shahin; Wedemeyer, Sven; Fleck, Bernhard; Stangalini, M.; Jess, D. B.; Morton, R. J.; Szydlarski, Mikolaj Marcin; de Jorge Henriques, Vasco Manuel; Zhu, X.; Wiegelmann, T.; Guevara Gomez, Juan Camilo; Grant, Samuel D. T.; Chen, B.; Reardon, K.; White, S. M. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    By direct measurements of the gas temperature, the Atacama Large Millimeter/submillimeter Array (ALMA) has yielded a new diagnostic tool to study the solar chromosphere. Here, we present an overview of the brightness-temperature ...
  • Characterization and formation of on-disk spicules in the Ca II K and Mg II k spectral lines 
    Bose, Souvik; de Jorge Henriques, Vasco Manuel; Joshi, Jayant; Rouppe van der Voort, Luc (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    We characterize, for the first time, type-II spicules in Ca II K 3934 Å using the CHROMIS instrument at the Swedish 1 m Solar Telescope. We find that their line formation is dominated by opacity shifts with the K3 minimum ...
  • Chromospheric Inversions of a Micro-flaring Region 
    Reid, A.; de Jorge Henriques, Vasco Manuel; Mathioudakis, M.; Doyle, J. G.; Ray, T. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    We use spectropolarimetric observations of the Ca ii 8542 Å line, taken from the Swedish 1 m Solar Telescope, in an attempt to recover dynamic activity in a micro-flaring region near a sunspot via inversions. These inversions ...
  • Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST) 
    Rast, Mark P.; Bello González, Nazaret; Bellot Rubio, Luis R.; Cao, Wenda; Cauzzi, Gianna; DeLuca, Edward; De Pontieu, Bart Walter; Fletcher, Lyndsay; Gibson, Sarah E.; Judge, Philip G.; Katsukawa, Yukio; Kazachenko, Maria D.; Khomenko, Elena; Landi, Enrico; Martínez Pillet, Valentín; Petrie, Gordon J. D.; Qiu, Jiong; Rachmeler, Laurel A.; Rempel, Matthias; Schmidt, Wolfgang; Scullion, Eamon; Sun, Xudong; Welsch, Brian T.; Andretta, Vincenzo; Antolin, Patrick; Ayres, Thomas R.; Balasubramaniam, K. S.; Ballai, Istvan; Berger, Thomas E.; Bradshaw, Stephen J.; Campbell, Ryan J.; Carlsson, Mats; Casini, Roberto; Centeno, Rebecca; Cranmer, Steven R.; Criscuoli, Serena; DeForest, Craig; Deng, Yuanyong; Erdélyi, Robertus; Fedun, Viktor; Fischer, Catherine E.; González Manrique, Sergio Javier; Hahn, Michael; Harra, Louise K.; de Jorge Henriques, Vasco Manuel; Hurlburt, Neal E.; Jaeggli, Sarah A.; Jafarzadeh, Shahin; Jain, Rekha; Jefferies, Stuart M.; Keys, Peter H.; Kowalski, Adam F.; Kuckein, Christoph; Kuhn, Jeffrey R.; Kuridze, David; Liu, Jiajia; Liu, Wei; Longcope, Dana; Mathioudakis, Mihalis; McAtee, R. T. James; McIntosh, Scott W.; McKenzie, David E.; Miralles, Mari Paz; Morton, Richard J.; Muglach, Karin; Nelson, Chris J.; Panesar, Navdeep K.; Parenti, Susanna; Parnell, Clare E.; Poduval, Bala; Reardon, Kevin P.; Reep, Jeffrey W.; Schad, Thomas A.; Schmit, Donald; Sharma, Rahul; Socas-Navarro, Hector; Srivastava, Abhishek Kumar; Sterling, Alphonse C.; Suematsu, Yoshinori; Tarr, Lucas A.; Tiwari, Sanjiv; Tritschler, Alexandra; Verth, Gary; Vourlidas, Angelos; Wang, Haimin; Wang, Yi-Ming (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    The National Science Foundation’s Daniel K. Inouye Solar Telescope (DKIST) will revolutionize our ability to measure, understand, and model the basic physical processes that control the structure and dynamics of the Sun ...
  • Downflowing umbral flashes as evidence of standing waves in sunspot umbrae 
    Felipe, Tobias; de Jorge Henriques, Vasco Manuel; de la Cruz Rodriguez, Jaime; Socas-Navarro, Hector (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Context. Umbral flashes are sudden brightenings commonly visible in the core of some chromospheric lines. Theoretical and numerical modeling suggests that they are produced by the propagation of shock waves. According to ...
  • Dynamics of internetwork chromospheric fibrils: Basic properties and magnetohydrodynamic kink waves 
    Mooroogen, K.; Morton, R. J.; de Jorge Henriques, Vasco Manuel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Aims. Current observational instruments are now providing data with the necessary temporal and spatial cadences required to examine highly dynamic, fine-scale magnetic structures in the solar atmosphere. Using the spectroscopic ...
  • The formation of small-scale umbral brightenings in sunspot atmospheres 
    Nelson, C. J.; de Jorge Henriques, Vasco Manuel; Mathioudakis, M.; Keenan, F. P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Context. Sunspot atmospheres have been shown to be highly inhomogeneous hosting both quasi-stable and transient features, such as small-scale umbral brightenings (previously named “umbral micro-jets”) and dark fibril-like ...
  • High-resolution observations of the solar photosphere, chromosphere, and transition region: A database of coordinated IRIS and SST observations 
    Rouppe van der Voort, Luc; De Pontieu, Bart Walter; Carlsson, Mats; de la Cruz Rodriguez, Jaime; Bose, Souvik; Chintzoglou, Georgios; Drews, Ainar; Froment, Clara; Gošić, Milan; Graham, David R.; Hansteen, Viggo; de Jorge Henriques, Vasco Manuel; Jafarzadeh, Shahin; Joshi, Jayant; Kleint, Lucia; Kohutova, Petra; Leifsen, Torben; Martinez-Sykora, Juan; Nóbrega Siverio, Daniel Elias; Ortiz, Ada; Mendes Domingos Pereira, Tiago; Popovas, Andrius; Quintero Noda, Carlos; Sainz Dalda, Alberto; Scharmer, Göran B.; Schmit, Donald; Scullion, Eamon; Skogsrud, Håkon; Szydlarski, Mikolaj Marcin; Timmons, R.; Vissers, Gregal Joan Maria; Woods, M. M.; Zacharias, Pia (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    NASA’s Interface Region Imaging Spectrograph (IRIS) provides high-resolution observations of the solar atmosphere through ultraviolet spectroscopy and imaging. Since the launch of IRIS in June 2013, we have conducted ...
  • High-resolution spectropolarimetric observations of the temporal evolution of magnetic fields in photospheric bright points 
    Keys, Peter H.; Reid, Aaron L.; Mathioudakis, Mihalis; Shelyag, Sergey I.; de Jorge Henriques, Vasco Manuel; Hewitt, Rebecca L.; del Moro, Dario; Jafarzadeh, Shahin; Jess, David B.; Stangalini, Marco (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Context. Magnetic bright points (MBPs) are dynamic, small-scale magnetic elements often found with field strengths of the order of a kilogauss within intergranular lanes in the photosphere. Aims. Here we study the evolution ...
  • A Hot Downflowing Model Atmosphere for Umbral Flashes and the Physical Properties of Their Dark Fibrils 
    de Jorge Henriques, Vasco Manuel; Mathioudakis, M.; Socas-Navarro, H.; de la Cruz Rodriguez, Jaime (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    We perform non-LTE inversions in a large set of umbral flashes, including the dark fibrils visible within them, and in the quiescent umbra by using the inversion code NICOLE on a set of full Stokes high-resolution Ca ii ...
  • Multi-scale observations of thermal non-equilibrium cycles in coronal loops 
    Froment, Clara; Antolin, Patrick; de Jorge Henriques, Vasco Manuel; Kohutova, Petra; Rouppe van der Voort, Luc (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Context. Thermal non-equilibrium (TNE) is a phenomenon that can occur in solar coronal loops when the heating is quasi-constant and highly-stratified. Under such heating conditions, coronal loops undergo cycles of evaporation ...
  • Penumbral Waves Driving Solar Fan-shaped Chromospheric Jets 
    Reid, A.; de Jorge Henriques, Vasco Manuel; Mathioudakis, M.; Samanta, T. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    We use Hα imaging spectroscopy taken via the Swedish 1 m Solar Telescope to investigate the occurrence of fan-shaped jets at the solar limb. We show evidence for near-simultaneous photospheric reconnection at a sunspot ...
  • Semi-empirical model atmospheres for the chromosphere of the sunspot penumbra and umbral flashes 
    Bose, Souvik; de Jorge Henriques, Vasco Manuel; Rouppe van der Voort, Luc; Mendes Domingos Pereira, Tiago (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Context: The solar chromosphere and the lower transition region are believed to play a crucial role in the heating of the solar corona. Models that describe the chromosphere (and the lower transition region), accounting ...
  • Signatures of ubiquitous magnetic reconnection in the deep atmosphere of sunspot penumbrae 
    Rouppe van der Voort, Luc; Joshi, Jayant; de Jorge Henriques, Vasco Manuel; Bose, Souvik (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Context. Ellerman bombs are regions with enhanced Balmer line wing emission and mark magnetic reconnection in the deep solar atmosphere in active regions and the quiet Sun. They are often found in regions where opposite ...
  • Spectropolarimetric Inversions of the Ca II 8542Å Line in an M-class Solar Flare 
    Kuridze, D.; de Jorge Henriques, Vasco Manuel; Mathioudakis, M.; Rouppe van der Voort, Luc; de la Cruz Rodriguez, Jaime; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    We study the M1.9-class solar flare SOL2015-09-27T10:40 UT using high-resolution full Stokes imaging spectropolarimetry of the Ca ii 8542 Å line obtained with the CRISP imaging spectropolarimeter at the Swedish 1-m Solar ...
  • Spectroscopic Inversions of the Ca II 8542 Å Line in a C-class Solar Flare 
    Kuridze, D.; de Jorge Henriques, Vasco Manuel; Mathioudakis, M.; Koza, J.; Zaqarashvili, T. V.; Rybak, J; Hanslmeier, A.; Keenan, F. P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    © 2017. The American Astronomical Society. All rights reserved.
  • Spicules and downflows in the solar chromosphere 
    Bose, Souvik; Joshi, Jayant; de Jorge Henriques, Vasco Manuel; Rouppe van der Voort, Luc (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Context. High-speed downflows have been observed in the solar transition region (TR) and lower corona for many decades. Despite their abundance, it has been hard to find signatures of such downflows in the solar chromosphere. ...
  • The magnetic properties of photospheric magnetic bright points with high-resolution spectropolarimetry 
    Keys, Peter H.; Reid, Aaron; Mathioudakis, Mihalis; Shelyag, Sergiy; de Jorge Henriques, Vasco Manuel; Hewitt, Rebecca L.; Del Moro, Dario; Jafarzadeh, Shahin; Jess, David B.; Stangalini, Marco (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Magnetic bright points (MBPs) are small-scale magnetic elements ubiquitous across the solar disc, with the prevailing theory suggesting that they form due to the process of convective collapse. Employing a unique full ...
  • The Solar ALMA Science Archive (SALSA): First release, SALAT, and FITS header standard 
    de Jorge Henriques, Vasco Manuel; Jafarzadeh, Shahin; Guevara Gomez, Juan Camilo; Eklund, Henrik; Wedemeyer, Sven; Szydlarski, Mikolaj; Haugan, Stein Vidar Hagfors; Mohan, Atul (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    In December 2016, the Atacama Large Millimeter/submillimeter Array (ALMA) carried out the first regular observations of the Sun. These early observations and the reduction of the respective data posed a challenge due to ...
  • Transverse motions in sunspot super-penumbral fibrils 
    Morton, Richard J.; Mooroogen, K; de Jorge Henriques, Vasco Manuel (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    Sunspots have played a key role in aiding our understanding of magnetohydrodynamic (MHD) wave phenomena in the Sun’s atmosphere, and it is well known they demonstrate a number of wave phenomena associated with slow MHD ...