Zobrazeno 1 - 10
of 221
pro vyhledávání: '"Hofmeister, S"'
Autor:
Krenn, A. F., Lendl, M., Sulis, S., Deleuil, M., Hofmeister, S. J., Jannsen, N., Fossati, L., De Ridder, J., Seynaeve, D., Jarolim, R., Veronig, A. M.
Context. The PLAnetary Transits and Oscillations of stars (PLATO) mission will observe the same area of the sky continuously for at least two years in an effort to detect transit signals of an Earth-like planet orbiting a solar-like star. Aims. We ai
Externí odkaz:
http://arxiv.org/abs/2410.20077
Autor:
Piantschitsch, I., Terradas, J., Soubrie, E., Heinemann, S. G., Hofmeister, S. J., Soler, R., Temmer, M.
The geometry of a coronal hole (CH) affects the density profile of the reflected part of an incoming global coronal wave (CW). In this study, we perform for the first time magnetohydrodynamic (MHD) simulations of fast-mode MHD waves interacting with
Externí odkaz:
http://arxiv.org/abs/2403.06614
Autor:
Pietrow, A. G. M., Cretignier, M., Druett, M. K., Alvarado-Gómez, J. D., Hofmeister, S. J., Verma, M., Kamlah, R., Baratella, M., Amazo-Gomez, E. M., Kontogiannis, I., Dineva, E., Warmuth, A., Denker, C., Poppenhaeger, K., Andriienko, O., Dumusque, X., Löfdahl, M. G.
Publikováno v:
A&A Volume 682, February 2024, A46
Stellar flares cannot be spatially resolved, which complicates ascertaining the physical processes behind particular spectral signatures. Due to their proximity to Earth, solar flares can serve as a stepping stone for understanding their stellar coun
Externí odkaz:
http://arxiv.org/abs/2309.03373
Autor:
Piantschitsch, I., Terradas, J., Soubrie, E., Heinemann, S. G., Hofmeister, S. J., Soler, R., Temmer, M.
Interactions between global coronal waves (CWs) and coronal holes (CHs) reveal many interesting features of reflected waves and coronal hole boundaries (CHB) but have fairly been studied so far. Magnetohydrodynamic (MHD) simulations can help us to be
Externí odkaz:
http://arxiv.org/abs/2308.08928
Autor:
Temmer, M., Scolini, C., Richardson, I. G., Heinemann, S. G., Paouris, E., Vourlidas, A., Bisi, M. M., teams, writing, Al-Haddad, N., Amerstorfer, T., Barnard, L., Buresova, D., Hofmeister, S. J., Iwai, K., Jackson, B. V., Jarolim, R., Jian, L. K., Linker, J. A., Lugaz, N., Manoharan, P. K., Mays, M. L., Mishra, W., Owens, M. J., Palmerio, E., Perri, B., Pomoell, J., Pinto, R. F., Samara, E., Singh, T., Sur, D., Verbeke, C., Veronig, A. M., Zhuang, B.
The ISWAT clusters H1+H2 have a focus on interplanetary space and its characteristics, especially on the large-scale co-rotating and transient structures impacting Earth. SIRs, generated by the interaction between high-speed solar wind originating in
Externí odkaz:
http://arxiv.org/abs/2308.04851
Autor:
Jarolim, R., Veronig, A. M., Hofmeister, S., Heinemann, S. G., Temmer, M., Podladchikova, T., Dissauer, K.
Publikováno v:
A&A 652, A13 (2021)
We develop a reliable, fully automatic method for the detection of coronal holes, that provides consistent full-disk segmentation maps over the full solar cycle and can perform in real-time. We use a convolutional neural network to identify the bound
Externí odkaz:
http://arxiv.org/abs/2104.14313
Autor:
Linker, J. A., Heinemann, S. G., Temmer, M., Owens, M. J., Caplan, R. M., Arge, C. N., Asvestari, E., Delouille, V., Downs, C., Hofmeister, S. J., Jebaraj, I. C., Madjarska, M., Pinto, R., Pomoell, J., Samara, E., Scolini, C., Vrsnak, B.
Many scientists use coronal hole (CH) detections to infer open magnetic flux. Detection techniques differ in the areas that they assign as open, and may obtain different values for the open magnetic flux. We characterize the uncertainties of these me
Externí odkaz:
http://arxiv.org/abs/2103.05837
Autor:
Temmer, M., Holzknecht, L., Dumbovic, M., Vrsnak, B., Sachdeva, N., Heinemann, S. G., Dissauer, K., Scolini, C., Asvestari, E., Veronig, A. M., Hofmeister, S. J.
We determine the 3D geometry and deprojected mass of 29 well-observed coronal mass ejections (CMEs) and their interplanetary counterparts (ICMEs) using combined STEREO-SOHO white-light data. From the geometry parameters we calculate the volume of the
Externí odkaz:
http://arxiv.org/abs/2011.06880
Autor:
Palacios, J., Utz, D., Hofmeister, S., Krikova, K., Gömöry, P., Kuckein, C., Denker, C., Verma, M., Manrique, S. J. González, Rozo, J. I. Campos, Koza, J., Temmer, M., Veronig, A., Diercke, A., Kontogiannis, I., Cid, C.
Publikováno v:
Solar Physics, 295, article 64 (2020)
A joint campaign of various space-borne and ground-based observatories, comprising the Japanese Hinode mission (HOP~338, 20\,--\,30~September 2017), the GREGOR solar telescope, and the \textit{Vacuum Tower Telescope} (VTT), investigated numerous targ
Externí odkaz:
http://arxiv.org/abs/2006.11779
Autor:
Sulis, S., Lendl, M., Hofmeister, S., Veronig, A., Fossati, L., Cubillos, P., Van Grootel, V.
Publikováno v:
A&A 636, A70 (2020)
In photometry, the short-timescale stellar variability ("flicker"), such as that caused by granulation and oscillations, can reach amplitudes comparable to the transit depth of Earth-sized planets and is correlated over the typical transit timescales
Externí odkaz:
http://arxiv.org/abs/2003.07707