Zobrazeno 1 - 10
of 193
pro vyhledávání: '"Belluzzi L"'
Publikováno v:
A&A 688, A137 (2024)
Aims: Main goal of this work is to study the potential of He II Ly-alpha wavelength-integrated scattering polarisation for probing the magnetism of the solar upper chromosphere. Methods: Radiative transfer calculations are performed in semi-empirical
Externí odkaz:
http://arxiv.org/abs/2401.17834
Autor:
Rachmeler, L. A., Bueno, J. Trujillo, McKenzie, D. E., Ishikawa, R., Auchere, F., Kobayashi, K., Kano, R., Okamoto, T. J., Bethge, C. W., Song, D., Ballester, E. Alsina, Belluzzi, L., Aleman, T. del Pino, Yoshida, M., Shimizu, T., Winebarger, A., Kobelski, A. R., Vigil, G. D., De Pontieu, B., Suematsu, Y., Narukage, N., Kubo, M., Sakao, T., Hara, H., Stepan, J., Carlsson, M., Leenaarts, J., Ramos, A. Asensio
Publikováno v:
ApJ 936 67 (2022)
The CLASP2 (Chromospheric LAyer SpectroPolarimeter 2) sounding rocket mission was launched on 2019 April 11. CLASP2 measured the four Stokes parameters of the Mg II h & k spectral region around 2800 Angstroms along a 200 arcsecond slit at three locat
Externí odkaz:
http://arxiv.org/abs/2207.01788
Autor:
Peter, H., Ballester, E. Alsina, Andretta, V., Auchere, F., Belluzzi, L., Bemporad, A., Berghmans, D., Buchlin, E., Calcines, A., Chitta, L. P., Dalmasse, K., Aleman, T. del Pino, Feller, A., Froment, C., Harrison, R., Janvier, M., Matthews, S., Parenti, S., Przybylski, D., Solanki, S. K., Stepan, J., Teriaca, L., Bueno, J. Trujillo
The magnetic activity of the Sun directly impacts the Earth and human life. Likewise, other stars will have an impact on the habitability of planets orbiting these host stars. The lack of information on the magnetic field in the higher atmospheric la
Externí odkaz:
http://arxiv.org/abs/2101.01566
Publikováno v:
A&A 645, A4 (2021)
Modeling spectral line profiles taking frequency redistribution effects into account is a notoriously challenging problem from the computational point of view, especially when polarization phenomena (atomic polarization and polarized radiation) are t
Externí odkaz:
http://arxiv.org/abs/2010.03508
Publikováno v:
A&A 641, A63 (2020)
Several strong resonance lines, such as H I Ly-$\alpha$, Mg II k, Ca II K, Ca I 4227 \AA\, which are characterized by deep and broad absorption profiles in the solar intensity spectrum, show conspicuous linear scattering polarization signals when obs
Externí odkaz:
http://arxiv.org/abs/2006.13653
Autor:
Schlichenmaier, R., Rubio, L. R. Bellot, Collados, M., Erdelyi, R., Feller, A., Fletcher, L., Jurcak, J., Khomenko, E., Leenaarts, J., Matthews, S., Belluzzi, L., Carlsson, M., Dalmasse, K., Danilovic, S., Gömöry, P., Kuckein, C., Sainz, R. Manso, Gonzalez, M. Martinez, Mathioudakis, M., Ortiz, A., Riethmüller, T. L., van der Voort, L. Rouppe, Simoes, P. J. A., Bueno, J. Trujillo, Utz, D., Zuccarello, F.
The European Solar Telescope (EST) is a research infrastructure for solar physics. It is planned to be an on-axis solar telescope with an aperture of 4 m and equipped with an innovative suite of spectro-polarimetric and imaging post-focus instrumenta
Externí odkaz:
http://arxiv.org/abs/1912.08650
Autor:
Bueno, J. Trujillo, Štěpán, J., Belluzzi, L., Ramos, A. Asensio, Sainz, R. Manso, Alemán, T. del Pino, Casini, R., Ishikawa, R., Kano, R., Winebarger, A., Auchère, F., Narukage, N., Kobayashi, K., Bando, T., Katsukawa, Y., Kubo, M., Ishikawa, S., Giono, G., Hara, H., Suematsu, Y., Shimizu, T., Sakao, T., Tsuneta, S., Ichimoto, K., Cirtain, J., Champey, P., De Pontieu, B., Carlsson, M.
The Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) is a suborbital rocket experiment that on 3rd September 2015 measured the linear polarization produced by scattering processes in the hydrogen Ly-$\alpha$ line of the solar disk radiation, who
Externí odkaz:
http://arxiv.org/abs/1809.08865
Autor:
Stepan, J., Bueno, J. Trujillo, Belluzzi, L., Ramos, A. Asensio, Sainz, R. Manso, Aleman, T. del Pino, Casini, R., Kano, R., Winebarger, A., Auchere, F., Ishikawa, R., Narukage, N., Kobayashi, K., Bando, T., Katsukawa, Y., Kubo, M., Ishikawa, S., Giono, G., Hara, H., Suematsu, Y., Shimizu, T., Sakao, T., Tsuneta, S., Ichimoto, K., Cirtain, J., Champey, P., De Pontieu, B., Carlsson, M.
On 3rd September 2015, the Chromospheric Lyman-Alpha SpectroPolarimeter (CLASP) successfully measured the linear polarization produced by scattering processes in the hydrogen Lyman-$\alpha$ line of the solar disk radiation, revealing conspicuous spat
Externí odkaz:
http://arxiv.org/abs/1808.02725
Autor:
Bianda, M., Berdyugina, S., Gisler, D., Ramelli, R., Belluzzi, L., Carlin, E. S., Stenflo, J. O., Berkefeld, T.
Publikováno v:
A&A 614, A89 (2018)
Context. The scattering polarization signal observed in the photospheric Sr i 4607 {\AA} line is expected to vary at granular spatial scales. This variation can be due to changes in the magnetic field intensity and orientation (Hanle effect), but als
Externí odkaz:
http://arxiv.org/abs/1803.03531
The linear polarization pattern produced by scattering processes in the Ca I resonance line at 4227 angstroms is a valuable observable for probing the solar atmosphere. Via the Hanle effect, the very significant Q/I and U/I line-center signals are se
Externí odkaz:
http://arxiv.org/abs/1711.00372