Zobrazeno 1 - 10
of 345
pro vyhledávání: '"Ilya Usoskin"'
Autor:
Joonas Uusitalo, Kseniia Golubenko, Laura Arppe, Nicolas Brehm, Thomas Hackman, Hisashi Hayakawa, Samuli Helama, Kenichiro Mizohata, Fusa Miyake, Harri Mäkinen, Pekka Nöjd, Eija Tanskanen, Fuyuki Tokanai, Eugene Rozanov, Lukas Wacker, Ilya Usoskin, Markku Oinonen
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 5, Pp n/a-n/a (2024)
Abstract The Carrington event of 1859 has been the strongest solar flare in the observational history. It plays a crucial role in shedding light on the frequency and impacts of the past and future Solar Energetic Particle (SEP) events on human societ
Externí odkaz:
https://doaj.org/article/a5b6ee8c0b6b470fbf2821ce683afea2
Autor:
Hiroyuki K. M. Tanaka, Jon Gluyas, Marko Holma, Jari Joutsenvaara, Pasi Kuusiniemi, Giovanni Leone, Domenico Lo Presti, Jun Matsushima, László Oláh, Sara Steigerwald, Lee F. Thompson, Ilya Usoskin, Stepan Poluianov, Dezső Varga, Yusuke Yokota
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-14 (2022)
Abstract Large-scale solid bodies on Earth such as volcanoes and man-made pyramids have been visualized with solid earth muography, and the recently invented technique, acqueous muography, has already demonstrated its capability to visualize ocean ti
Externí odkaz:
https://doaj.org/article/958181645aa2429e8c468022966c795e
Autor:
Nicolas Brehm, Marcus Christl, Timothy D. J. Knowles, Emmanuelle Casanova, Richard P. Evershed, Florian Adolphi, Raimund Muscheler, Hans-Arno Synal, Florian Mekhaldi, Chiara I. Paleari, Hanns-Hubert Leuschner, Alex Bayliss, Kurt Nicolussi, Thomas Pichler, Christian Schlüchter, Charlotte L. Pearson, Matthew W. Salzer, Patrick Fonti, Daniel Nievergelt, Rashit Hantemirov, David M. Brown, Ilya Usoskin, Lukas Wacker
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Two extreme solar energetic particle events have been found by carbon isotopes measured in ancient tree rings in 7176 and 5259 BCE. The recorded ~2% increases of atmospheric 14 C for both events exceeds in amplitude of all previously observed events.
Externí odkaz:
https://doaj.org/article/15c7584107454fb6b056596eb09f847b
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 122 (2023)
Major solar eruptions can accelerate protons up to relativistic energies. Solar relativistic ions arriving at 1 au may cause a solar particle event detectable by the worldwide network of neutron monitors (NMs), a ground-level enhancement (GLE) event.
Externí odkaz:
https://doaj.org/article/87dc6d0738c2484e85b17a008ee8a59e
Autor:
Stepan Poluianov, Ilya Usoskin, Alexander Mishev, Harm Moraal, Helena Krüger, Giampietro Casasanta, Rita Traversi, Roberto Udisti
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 32, Iss 4, Pp 281-287 (2015)
Two mini neutron monitors are installed at Concordia research station (Dome C, Central Antarctica, 75°06'S, 123°23'E, 3,233 m.a.s.l.). The site has unique properties ideal for cosmic ray measurements, especially for the detection of solar energetic
Externí odkaz:
https://doaj.org/article/a100eaa3903e48fbba6994b5ec3221dc
Publikováno v:
Advances in Space Research. 70:2618-2624
Galactic cosmic rays (GCR) show a small local anisotropy detected as a diurnal variability of neutron monitor (NM) count rates. As the asymptotic directions of different NMs are diverse, the capability of the GCR diurnal variation observation is also
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb5b2182cf741184e2ab06c85d96c3cd
https://doi.org/10.1016/j.asr.2021.12.010
https://doi.org/10.1016/j.asr.2021.12.010
An important topic in the field of space physics is the quantification of the cosmic-ray-induced effects in the atmosphere and the corresponding space weather effects. Space weather effects, specifically the exposure to radiation at aviation altitude
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e45e0dd85ffdf40d8f7a86c5e5d8674
https://doi.org/10.5194/egusphere-egu23-185
https://doi.org/10.5194/egusphere-egu23-185
Besides the well-known 11 year solar cycle, the Sun occasionally produces strong eruptions on the Sun‘s surface and in the corona. They can first be seen as flare events in electromagnetic spectrum down to X ray wavelengths. Within these strong eru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e17fb8ef0050b6bb4ddd32b84b4c54a0
https://doi.org/10.5194/egusphere-egu23-13994
https://doi.org/10.5194/egusphere-egu23-13994
We present a new open-source tool for magnetospheric computations, that is modelling of cosmic ray propagation in the geomagnetosphere, named "Oulu - Open-source geomagneToSphere prOpagation tool" (OTSO). A tool of this nature is required to interpre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::560e296577d5277af2c10c34b08c8319
https://doi.org/10.5194/egusphere-egu23-287
https://doi.org/10.5194/egusphere-egu23-287
Galactic cosmic rays (GCR) are energetic particles originating from galactic or extra-galactic sources. When they arrive inside our heliosphere, they are modulated by the magnetic irregularities in the solar wind flow from the Sun, deflecting and slo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::443263052514a1b882f6f0807692ad1b
https://doi.org/10.5194/egusphere-egu23-11071
https://doi.org/10.5194/egusphere-egu23-11071