Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Warmuth, Alexander"'
Publikováno v:
Volume 663, A18, July 2022
Spatially unresolved observations show that the cooling phase in solar flares can be much longer than theoretical models predict. It has not yet been determined whether this is also the case for different subregions within the flare structure. We aim
Externí odkaz:
http://arxiv.org/abs/2406.13339
Autor:
Pesce-Rollins, Melissa, Klein, Karl-Ludwig, Krucker, Säm, Warmuth, Alexander, Veronig, M. Astrid, Omodei, Nicola, Monstein, Christian
We report on the detection of the gamma-ray emission above 100 MeV from the solar flare of September 29, 2022, by Fermi LAT with simultaneous coverage in HXR by Solar Orbiter STIX. The Solar Orbiter-Earth separation was 178$^{\circ}$ at the time of t
Externí odkaz:
http://arxiv.org/abs/2402.08380
Autor:
Battaglia, Andrea Francesco, Hudson, Hugh, Warmuth, Alexander, Collier, Hannah, Jeffrey, Natasha L. S., Caspi, Amir, Dickson, Ewan C. M., Saqri, Jonas, Purkhart, Stefan, Veronig, Astrid M., Harra, Louise, Krucker, Säm
Publikováno v:
A&A 679, A139 (2023)
It is well known among the scientific community that solar flare activity often begins well before the main impulsive energy release. Our aim is to investigate the earliest phase of four distinct flares observed by Solar Orbiter/STIX and determine th
Externí odkaz:
http://arxiv.org/abs/2310.04234
Autor:
Li, Dong, Li, Chuan, Qiu, Ye, Rao, Shihao, Warmuth, Alexander, Schuller, Frederic, Zhao, Haisheng, Shi, Fanpeng, Xu, Jun, Ning, Zongjun
We investigate observational signatures of explosive chromospheric evaporation during a white-light flare (WLF) that occurred on 2022 August 27. Using the moment analysis, bisector techniques, and the Gaussian fitting method, red-shifted velocities o
Externí odkaz:
http://arxiv.org/abs/2306.15888
Autor:
Christe, Steven, Alaoui, Meriem, Allred, Joel, Battaglia, Marina, Baumgartner, Wayne, Buitrago-Casas, Juan Camilo, Caspi, Amir, Chen, Bin, Chen, Thomas, Dennis, Brian, Drake, James, Glesener, Lindsay, Hannah, Iain, Hayes, Laura A., Hudson, Hugh, Inglis, Andrew, Ireland, Jack, Klimchuk, James, Kowalski, Adam, Krucker, Säm, Massone, Anna Maria, Musset, Sophie, Piana, Michele, Ryan, Daniel, Shih, Albert Y., Veronig, Astrid, Vilmer, Nicole, Warmuth, Alexander, White, Stephen
Publikováno v:
Bulletin of the AAS, Vol. 55, Issue 3, Whitepaper #065 (13pp); 2023 July 31
FOXSI is a direct-imaging, hard X-ray (HXR) telescope optimized for solar flare observations. It detects hot plasma and energetic electrons in and near energy release sites in the solar corona via bremsstrahlung emission, measuring both spatial struc
Externí odkaz:
http://arxiv.org/abs/2306.15071
Autor:
Li, Dong, Warmuth, Alexander, Wang, Jincheng, Zhao, Haisheng, Lu, Lei, Zhang, Qingmin, Dresing, Nina, Vainio, Rami, Palmroos, Christian, Paassilta, Miikka, Fedeli, Annamaria, Dominique, Marie
Solar flares and coronal mass ejections (CMEs) are thought to be the most powerful events on the Sun. They can release energy as high as 10^32 erg in tens of minutes,and could produce solar energetic particles (SEPs) in the interplanetary space. We e
Externí odkaz:
http://arxiv.org/abs/2305.00381
Autor:
Jarry, Manon, Rouillard, Alexis P., Plotnikov, Illya, Kouloumvakos, Athanasios, Warmuth, Alexander
Publikováno v:
A&A 672, A127 (2023)
Coronal and interplanetary shock waves produced by coronal mass ejections (CMEs) are major drivers of space-weather phenomena, inducing major changes in the heliospheric radiation environment and directly perturbing the near-Earth environment, includ
Externí odkaz:
http://arxiv.org/abs/2303.08663
Autor:
Massa, Paolo, Hurford, Gordon. J., Volpara, Anna, Kuhar, Matej, Battaglia, Andrea Francesco, Xiao, Hualin, Casadei, Diego, Perracchione, Emma, Garbarino, Sara, Guastavino, Sabrina, Collier, Hannah, Dickson, Ewan C. M., Ryan, Daniel F., Maloney, Shane A., Schuller, Frederic, Warmuth, Alexander, Massone, Anna Maria, Benvenuto, Federico, Piana, Michele, Krucker, Säm
Aims. To provide a schematic mathematical description of the imaging concept of the Spectrometer/Telescope for Imaging X-rays (STIX) on board Solar Orbiter. The derived model is the fundamental starting point for both the interpretation of STIX data
Externí odkaz:
http://arxiv.org/abs/2303.02485
Autor:
Xiao, Hualin, Maloney, Shane, Krucker, Säm, Dickson, Ewan, Massa, Paolo, Lastufka, Erica, Battaglia, Andrea Francesco, Etesi, Laszlo, Hochmuth, Nicky, Schuller, Frederic, Ryan, Daniel F., Limousin, Olivier, Collier, Hannah, Warmuth, Alexander, Piana, Michele
Publikováno v:
A&A 673, A142 (2023)
The Spectrometer and Telescope for Imaging X-rays (STIX) on board Solar Orbiter observes solar X-ray emission in the range of 4 – 150 keV and produces spectra and images of solar flares over a wide range of flare magnitudes. During nominal operatio
Externí odkaz:
http://arxiv.org/abs/2302.00497
Autor:
Jebaraj, Immanuel Christopher, Kouloumvakos, Athanasios, Dresing, Nina, Warmuth, Alexander, Wijsen, Nicolas, Palmroos, Christian, Gieseler, Jan, Vainio, Rami, Krupar, Vratislav, Magdalenic, Jasmina, Wiegelmann, Thomas, Schuller, Frederic, Battaglia, Andrea, Fedeli, Annamaria
Publikováno v:
A&A 675, A27 (2023)
We study the solar energetic particle (SEP) event observed on 9 October 2021, by multiple spacecraft including Solar Orbiter (SolO). The event was associated with an M1.6 flare, a coronal mass ejection (CME) and a shock wave. During the event, high-e
Externí odkaz:
http://arxiv.org/abs/2301.03650