Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Javier Trujillo-Bueno"'
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 110 (2024)
The polarization of the Mg ii h and k resonance lines is the result of the joint action of scattering processes and the magnetic field–induced Hanle, Zeeman, and magneto-optical effects, thus holding significant potential for the diagnostic of the
Externí odkaz:
https://doaj.org/article/7d6a74f8bf1448e98d8cacf390d2f0e0
Autor:
Hao Li, Tanausú del Pino Alemán, Javier Trujillo Bueno, Ryohko Ishikawa, Ernest Alsina Ballester, David E. McKenzie, Luca Belluzzi, Donguk Song, Takenori J. Okamoto, Ken Kobayashi, Laurel A. Rachmeler, Christian Bethge, Frédéric Auchère
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 154 (2024)
We apply the HanleRT Tenerife Inversion Code to the spectropolarimetric observations obtained by the Chromospheric Layer Spectropolarimeter. This suborbital space experiment measured the variation with wavelength of the four Stokes parameters in the
Externí odkaz:
https://doaj.org/article/53e63c5d583c4a08aa174f1048ca6353
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 2, p 155 (2024)
We study the circular polarization of the magnetic-field-induced transition (MIT) between the 3 d ^5 ( ^6 S )4 d ^7 D _2 and 3 d ^5 ( ^6 S )4 p ^7 P _4 ° states of Cr i at 533.03 nm (wavelength in air). The fractional circular polarization V / I of
Externí odkaz:
https://doaj.org/article/00d0568351364844b36f41472101bf37
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 64 (2024)
We investigate the main physical mechanisms that shape the intensity and polarization of the Ba ii D _1 line at 4934 Å via radiative transfer numerical experiments. We focus especially on the scattering linear polarization arising from the spectral
Externí odkaz:
https://doaj.org/article/f0e9aeab69d94163bcac534ef516e3a1
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 10 (2024)
Solar magnetic fields alter scattering polarization in spectral lines like Sr i at 4607 Å via the Hanle effect, making it a potential diagnostic for small-scale, mixed-polarity photospheric magnetic fields. Recently, observational evidence for scatt
Externí odkaz:
https://doaj.org/article/8309daa72ba24ae99cfaf5ecca9beda5
Autor:
David Orozco Suárez, Jose Carlos del Toro Iniesta, Francisco Javier Bailén Martínez, María Balaguer Jiménez, Daniel Álvarez García, Daniel Serrano, Luis F. Peñin, Alicia Vázquez-Ramos, Luis Ramón Bellot Rubio, Julia Atienzar, Isabel Pérez Grande, Ignacio Torralbo Gimeno, Esteban Sanchis Kilders, José Luis Gasent Blesa, David Hernández Expósito, Basilio Ruiz Cobo, Javier Trujillo Bueno, Robertus Erdélyi, Jackie A. Davies, Lucie M. Green, Sarah A. Matthews, David M. Long, Michail Mathioudakis, Christian Kintziger, Jorrit Leenaarts, Silvano Fineschi, Eamon Scullion
Publikováno v:
Aerospace, Vol 10, Iss 12, p 987 (2023)
Measuring magnetic fields in the inner corona, the interface between the solar chromosphere and outer corona, is of paramount importance if we aim to understand the energetic transformations taking place there, and because it is at the origin of proc
Externí odkaz:
https://doaj.org/article/4fd20ff3c6ab4bbfa6faaa95ffc655a8
Autor:
Gioele Janett, Ernest Alsina Ballester, Luca Belluzzi, Tanausú del Pino Alemán, Javier Trujillo Bueno
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 38 (2023)
The long-standing paradox of the linear polarization signal of the Na i D _1 line was recently resolved by accounting for the atom’s hyperfine structure and the detailed spectral structure of the incident radiation field. That modeling relied on th
Externí odkaz:
https://doaj.org/article/4b81331be8134c148785446390f6b75c
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 2, p 218 (2023)
We investigate theoretically the circular polarization signals induced by the Zeeman effect in the Fe ii lines of the 279.3–280.7 nm spectral range of the CLASP2 space experiment and their suitability to infer solar magnetic fields. To this end, we
Externí odkaz:
https://doaj.org/article/bc431ab6748f41a49958e86b36c7b156
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 86 (2023)
This paper presents a theoretical investigation of the polarization and magnetic sensitivity of the near-ultraviolet (near-UV) solar spectral lines of Fe ii between 250 and 278 nm. In recent years, UV spectropolarimetry has become key to uncovering t
Externí odkaz:
https://doaj.org/article/a9f65ed2bfb84fe9870fcf1ba248f136
Publikováno v:
The Astrophysical Journal, Vol 942, Iss 2, p 60 (2023)
The Mg ii h and k lines are among the strongest in the near-ultraviolet solar spectrum and their line core originates in the upper chromosphere, just below the transition region. Consequently, they have become one of the main targets for investigatin
Externí odkaz:
https://doaj.org/article/3283452416ae471a92c0fd6d9604a4ef