Zobrazeno 1 - 10
of 397
pro vyhledávání: '"Krucker Säm"'
The Parker Solar Probe (PSP) spacecraft observed a large coronal mass ejection (CME) on 5 September 2022, shortly before closest approach during the 13th PSP solar encounter. For several days following the CME, PSP detected a storm of Type III radio
Externí odkaz:
http://arxiv.org/abs/2412.05464
Autor:
Collier, Hannah, Hayes, Laura A., Purkhart, Stefan, Krucker, Säm, Ryan, Daniel F., Polito, Vanessa, Veronig, Astrid M., Harra, Louise K., Berghmans, David, Kraaikamp, Emil, Dominique, Marie, Dolla, Laurent R., Verbeeck, Cis
Aims: This paper aims to demonstrate the importance of short-exposure extreme ultraviolet (EUV) observations of solar flares in the study of particle acceleration, heating and energy partition in flares. This work highlights the observations now avai
Externí odkaz:
http://arxiv.org/abs/2411.09319
Autor:
Battaglia, Andrea Francesco, Krucker, Säm, Veronig, Astrid M., Stiefel, Muriel Zoë, Warmuth, Alexander, Benz, Arnold O., Ryan, Daniel F., Collier, Hannah, Harra, Louise
Publikováno v:
A&A 691, A172 (2024)
In general, large solar flares are more efficient at accelerating high-energy electrons than microflares. Nonetheless, we sometimes observe microflares that accelerate electrons to high energies. We statistically characterize 39 microflares with stri
Externí odkaz:
http://arxiv.org/abs/2409.14466
Autor:
Bajnoková, Natália, Hannah, Iain G., Cooper, Kristopher, Krucker, Säm, Grefenstette, Brian W., Smith, David M., Jeffrey, Natasha L. S., Duncan, Jessie
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 533, Issue 3, September 2024, Pages 3742 -3755
We present the first joint spectral and imaging analysis of hard X-ray (HXR) emission from 3 microflares observed by the Nuclear Spectroscopic Telescope ARray (NuSTAR) and Solar Orbiter/Spectrometer/Telescope for Imaging X-rays (STIX). We studied 5 j
Externí odkaz:
http://arxiv.org/abs/2409.04722
Autor:
Massa, Paolo, Felix, Simon, Etesi, László István, Dickson, Ewan C. M., Xiao, Hualin, Ramunno, Francesco P., Selcuk-Simsek, Merve, Panos, Brandon, Csillaghy, André, Krucker, Säm
The Spectrometer/Telescope for Imaging X-rays (STIX) on-board the ESA Solar Orbiter mission retrieves the coordinates of solar flare locations by means of a specific sub-collimator, named the Coarse Flare Locator (CFL). When a solar flare occurs on t
Externí odkaz:
http://arxiv.org/abs/2408.16642
Publikováno v:
A&A 691, A190 (2024)
Solar eruptive events, including solar flares and coronal mass ejections (CMEs), are typically characterised by energetically significant X-ray emissions from flare-accelerated electrons and hot thermal plasmas. Occulted events, where the main flare
Externí odkaz:
http://arxiv.org/abs/2408.14194
Autor:
Purkhart, Stefan, Veronig, Astrid M., Kliem, Bernhard, Jarolim, Robert, Dissauer, Karin, Dickson, Ewan C. M., Podladchikova, Tatiana, Krucker, Säm
We studied the rapid filament evolution in AR 12975 during a confined C2 flare on 28 March 2022, which led to an eruptive M4 flare 1.5 h later. It is characterized by the breakup of the filament, the disappearance of its southern half, and the flow o
Externí odkaz:
http://arxiv.org/abs/2407.07777
Autor:
Chen, Bin, Kong, Xiangliang, Yu, Sijie, Shen, Chengcai, Li, Xiaocan, Guo, Fan, Zhang, Yixian, Glesener, Lindsay, Krucker, Säm
Where and how flares efficiently accelerate charged particles remains an unresolved question. Recent studies revealed that a "magnetic bottle" structure, which forms near the bottom of a large-scale reconnection current sheet above the flare arcade,
Externí odkaz:
http://arxiv.org/abs/2406.00109
Autor:
Collier, Hannah, Hayes, Laura A., Yu, Sijie, Battaglia, Andrea F., Ashfield, William, Polito, Vanessa, Harra, Louise K., Krucker, Säm
Publikováno v:
A&A 684, A215 (2024)
Aims: This work aims to identify the mechanism driving pulsations in hard X-ray (HXR) and microwave emission during solar flares. Here, by using combined HXR and microwave observations from Solar Orbiter/STIX and EOVSA we investigate an X1.3 GOES cla
Externí odkaz:
http://arxiv.org/abs/2402.10546
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