Zobrazeno 1 - 10
of 391
pro vyhledávání: '"Krucker Säm"'
Autor:
Battaglia, Andrea Francesco, Krucker, Säm, Veronig, Astrid M., Stiefel, Muriel Zoë, Warmuth, Alexander, Benz, Arnold O., Ryan, Daniel F., Collier, Hannah, Harra, Louise
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
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
Autor:
Collier, Hannah, Limousin, Olivier, Xiao, Hualin, Claret, Arnaud, Schuller, Frederic, Dresing, Nina, Valkila, Saku, Lara, Francisco Espinosa, Fedeli, Annamaria, Foucambert, Simon, Krucker, Säm
The Spectrometer/Telescope for Imaging X-rays (STIX) is a hard X-ray imaging spectrometer on board the ESA and NASA heliospheric mission Solar Orbiter. STIX has been operational for three years and has observed X-ray emission from ~35,000 solar flare
Externí odkaz:
http://arxiv.org/abs/2402.03816
Autor:
Jeffrey, Natasha L. S., Krucker, Säm, Stores, Morgan, Kontar, Eduard P., Saint-Hilaire, Pascal, Battaglia, Andrea F., Hayes, Laura, Collier, Hannah, Veronig, Astrid, Su, Yang, Tadepalli, Srikar Paavan, Xia, Fanxiaoyu
The Spectrometer/Telescope for Imaging X-rays (STIX) on board Solar Orbiter (SolO) provides a unique opportunity to systematically perform stereoscopic X-ray observations of solar flares with current and upcoming X-ray missions at Earth. These observ
Externí odkaz:
http://arxiv.org/abs/2401.16032