Zobrazeno 1 - 10
of 173
pro vyhledávání: '"Bart, De Pontieu"'
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 271, Iss 1, p 24 (2024)
We present the most comprehensive collection of stratified-in-optical-depth thermodynamic models of the lower solar atmosphere. This database, named IRIS ^2+ , consists of 40,320 synthetic representative profiles (RPs) and their corresponding represe
Externí odkaz:
https://doaj.org/article/7873101591d24929857ad8d461d7ac63
Autor:
Alberto Sainz Dalda, Bart De Pontieu
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
The flare activity of the Sun has been studied for decades, using both space- and ground-based telescopes. The former have mainly focused on the corona, while the latter have mostly been used to investigate the conditions in the chromosphere and phot
Externí odkaz:
https://doaj.org/article/040038e65ce549e1911c6bdefb1848c9
Autor:
Juan Martínez-Sykora, Jaime de la Cruz Rodríguez, Milan Gošić, Alberto Sainz Dalda, Viggo H. Hansteen, Bart De Pontieu
Publikováno v:
The Astrophysical Journal Letters, Vol 943, Iss 2, p L14 (2023)
The heating of the chromosphere in internetwork regions remains one of the foremost open questions in solar physics. In the present study, we tackle this old problem by using a very-high-spatial-resolution simulation of quiet-Sun conditions performed
Externí odkaz:
https://doaj.org/article/d6df9ccf440643ec9e9e5f18bd48179f
Autor:
Ignacio Ugarte-Urra, Peter R. Young, David H. Brooks, Harry P. Warren, Bart De Pontieu, Paul Bryans, Jeffrey W. Reep, Cooper Downs, Amy R. Winebarger, Samuel D. Tun
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2023)
In the context of the recent call for white papers for the Decadal Survey for Solar and Space Physics (Heliophysics) 2024–2033, we present the argument that spatially-resolved spectral diagnostics over the full solar disk should be made a high-prio
Externí odkaz:
https://doaj.org/article/c2abc91326a0462e83d93d5b63a01be7
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
We report on observations of highly-varying Si IV 1402.77 Å line profiles observed with the Interface Region Imaging Spectrograph (IRIS) during the M-class flare from 18 January 2022 at an unprecedented 0.8 s cadence. Moment analysis of this line ob
Externí odkaz:
https://doaj.org/article/90f262f5eca84120b49c614c3605e9e1
Autor:
Mats Carlsson, Bart De Pontieu
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 2, p 87 (2023)
The O i 1355 Å spectral line is one of the only optically thin lines that are both routinely observed and thought to be formed in the chromosphere. We present an analysis of a variety of observations of this line with the Interface Region Imaging Sp
Externí odkaz:
https://doaj.org/article/9741cbdf5b5f4e1990c5fbd1dd776eb9
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 2, p 85 (2023)
High-resolution spectral observations of the lower solar atmosphere (chromosphere and transition region) during coronal heating events, in combination with predictions from models of impulsively heated loops, provide powerful diagnostics of the prope
Externí odkaz:
https://doaj.org/article/190d7f66f47f470780eb6d85492d84f7
Autor:
Stephanie L. Yardley, Christopher J. Owen, David M. Long, Deborah Baker, David H. Brooks, Vanessa Polito, Lucie M. Green, Sarah Matthews, Mathew Owens, Mike Lockwood, David Stansby, Alexander W. James, Gherardo Valori, Alessandra Giunta, Miho Janvier, Nawin Ngampoopun, Teodora Mihailescu, Andy S. H. To, Lidia van Driel-Gesztelyi, Pascal Démoulin, Raffaella D’Amicis, Ryan J. French, Gabriel H. H. Suen, Alexis P. Rouillard, Rui F. Pinto, Victor Réville, Christopher J. Watson, Andrew P. Walsh, Anik De Groof, David R. Williams, Ioannis Zouganelis, Daniel Müller, David Berghmans, Frédéric Auchère, Louise Harra, Udo Schuehle, Krysztof Barczynski, Éric Buchlin, Regina Aznar Cuadrado, Emil Kraaikamp, Sudip Mandal, Susanna Parenti, Hardi Peter, Luciano Rodriguez, Conrad Schwanitz, Phil Smith, Luca Teriaca, Cis Verbeeck, Andrei N. Zhukov, Bart De Pontieu, Tim Horbury, Sami K. Solanki, Jose Carlos del Toro Iniesta, Joachim Woch, Achim Gandorfer, Johann Hirzberger, David Orozco Súarez, Thierry Appourchaux, Daniele Calchetti, Jonas Sinjan, Fatima Kahil, Kinga Albert, Reiner Volkmer, Mats Carlsson, Andrzej Fludra, Don Hassler, Martin Caldwell, Terje Fredvik, Tim Grundy, Steve Guest, Margit Haberreiter, Sarah Leeks, Gabriel Pelouze, Joseph Plowman, Werner Schmutz, Sunil Sidher, William T. Thompson, Philippe Louarn, Andrei Federov
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 267, Iss 1, p 11 (2023)
The Slow Solar Wind Connection Solar Orbiter Observing Plan (Slow Wind SOOP) was developed to utilize the extensive suite of remote-sensing and in situ instruments on board the ESA/NASA Solar Orbiter mission to answer significant outstanding question
Externí odkaz:
https://doaj.org/article/0066ae64811043d48a0175ce81e45182
Autor:
Juan Martínez-Sykora, Bart De Pontieu, Viggo H. Hansteen, Paola Testa, Q. M. Wargnier, Mikolaj Szydlarski
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 2, p 112 (2023)
The ponderomotive force has been suggested to be the main mechanism to produce the so-called first ionization potential (FIP) effect—the enrichment of low-FIP elements observed in the outer solar atmosphere, in the solar wind, and in solar energeti
Externí odkaz:
https://doaj.org/article/61f42ea2d5354c38a2e9d190d7117679
Autor:
Viggo H. Hansteen, Juan Martinez-Sykora, Mats Carlsson, Bart De Pontieu, Milan Gošić, Souvik Bose
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 2, p 131 (2023)
The Mg ii h and k lines are among the best diagnostic tools of the upper solar chromosphere. This region of the atmosphere is of particular interest, as it is the lowest region of the Sun’s atmosphere where the magnetic field is dominant in the ene
Externí odkaz:
https://doaj.org/article/99deab86000a4f25b36edf163aaf749f