Matches in SemOpenAlex for { <https://semopenalex.org/work/W3170298948> ?p ?o ?g. }
- W3170298948 endingPage "A20" @default.
- W3170298948 startingPage "A20" @default.
- W3170298948 abstract "Context. On 2020 November 29, the first widespread solar energetic particle (SEP) event of solar cycle 25 was observed at four widely separated locations in the inner (≲1 AU) heliosphere. Relativistic electrons as well as protons with energies > 50 MeV were observed by Solar Orbiter (SolO), Parker Solar Probe, the Solar Terrestrial Relations Observatory (STEREO)-A and multiple near-Earth spacecraft. The SEP event was associated with an M4.4 class X-ray flare and accompanied by a coronal mass ejection and an extreme ultraviolet (EUV) wave as well as a type II radio burst and multiple type III radio bursts. Aims. We present multi-spacecraft particle observations and place them in context with source observations from remote sensing instruments and discuss how such observations may further our understanding of particle acceleration and transport in this widespread event. Methods. Velocity dispersion analysis (VDA) and time shift analysis (TSA) were used to infer the particle release times at the Sun. Solar wind plasma and magnetic field measurements were examined to identify structures that influence the properties of the energetic particles such as their intensity. Pitch angle distributions and first-order anisotropies were analyzed in order to characterize the particle propagation in the interplanetary medium. Results. We find that during the 2020 November 29 SEP event, particles spread over more than 230° in longitude close to 1 AU. The particle onset delays observed at the different spacecraft are larger as the flare–footpoint angle increases and are consistent with those from previous STEREO observations. Comparing the timing when the EUV wave intersects the estimated magnetic footpoints of each spacecraft with particle release times from TSA and VDA, we conclude that a simple scenario where the particle release is only determined by the EUV wave propagation is unlikely for this event. Observations of anisotropic particle distributions at SolO, Wind, and STEREO-A do not rule out that particles are injected over a wide longitudinal range close to the Sun. However, the low values of the first-order anisotropy observed by near-Earth spacecraft suggest that diffusive propagation processes are likely involved." @default.
- W3170298948 created "2021-06-22" @default.
- W3170298948 creator A5001191217 @default.
- W3170298948 creator A5002532698 @default.
- W3170298948 creator A5018444092 @default.
- W3170298948 creator A5020066460 @default.
- W3170298948 creator A5024870400 @default.
- W3170298948 creator A5030266079 @default.
- W3170298948 creator A5037510071 @default.
- W3170298948 creator A5042071418 @default.
- W3170298948 creator A5055430033 @default.
- W3170298948 creator A5057118067 @default.
- W3170298948 creator A5062783820 @default.
- W3170298948 creator A5065795181 @default.
- W3170298948 creator A5073440177 @default.
- W3170298948 creator A5077602350 @default.
- W3170298948 creator A5080737607 @default.
- W3170298948 creator A5083426756 @default.
- W3170298948 creator A5090959140 @default.
- W3170298948 date "2021-12-01" @default.
- W3170298948 modified "2023-10-16" @default.
- W3170298948 title "The first widespread solar energetic particle event observed by Solar Orbiter on 2020 November 29" @default.
- W3170298948 cites W1152850498 @default.
- W3170298948 cites W1503370816 @default.
- W3170298948 cites W1668133495 @default.
- W3170298948 cites W1963701191 @default.
- W3170298948 cites W1965027085 @default.
- W3170298948 cites W1966714765 @default.
- W3170298948 cites W1969641998 @default.
- W3170298948 cites W1976689108 @default.
- W3170298948 cites W1979831902 @default.
- W3170298948 cites W1981847949 @default.
- W3170298948 cites W1982195313 @default.
- W3170298948 cites W1984427774 @default.
- W3170298948 cites W1985470901 @default.
- W3170298948 cites W1985547550 @default.
- W3170298948 cites W2003082226 @default.
- W3170298948 cites W2003110235 @default.
- W3170298948 cites W2012940043 @default.
- W3170298948 cites W2014292057 @default.
- W3170298948 cites W2018081537 @default.
- W3170298948 cites W2018819045 @default.
- W3170298948 cites W2021274336 @default.
- W3170298948 cites W2032503339 @default.
- W3170298948 cites W2034564391 @default.
- W3170298948 cites W2036087953 @default.
- W3170298948 cites W2038527638 @default.
- W3170298948 cites W2041349732 @default.
- W3170298948 cites W2051321667 @default.
- W3170298948 cites W2057002746 @default.
- W3170298948 cites W2061021397 @default.
- W3170298948 cites W2062124620 @default.
- W3170298948 cites W2063519587 @default.
- W3170298948 cites W2063712921 @default.
- W3170298948 cites W2068796461 @default.
- W3170298948 cites W2074918685 @default.
- W3170298948 cites W2075568473 @default.
- W3170298948 cites W2082770496 @default.
- W3170298948 cites W2087958251 @default.
- W3170298948 cites W2089256742 @default.
- W3170298948 cites W2097208940 @default.
- W3170298948 cites W2098788010 @default.
- W3170298948 cites W2100723408 @default.
- W3170298948 cites W2130223871 @default.
- W3170298948 cites W2142234851 @default.
- W3170298948 cites W2145288232 @default.
- W3170298948 cites W2145703254 @default.
- W3170298948 cites W2148409137 @default.
- W3170298948 cites W2464477615 @default.
- W3170298948 cites W2485801724 @default.
- W3170298948 cites W2603719502 @default.
- W3170298948 cites W2769680802 @default.
- W3170298948 cites W2787339415 @default.
- W3170298948 cites W2790544809 @default.
- W3170298948 cites W2887936038 @default.
- W3170298948 cites W2908014659 @default.
- W3170298948 cites W2914802288 @default.
- W3170298948 cites W2942622257 @default.
- W3170298948 cites W2944080284 @default.
- W3170298948 cites W2944134073 @default.
- W3170298948 cites W2963512884 @default.
- W3170298948 cites W2994828341 @default.
- W3170298948 cites W2999782728 @default.
- W3170298948 cites W3023776094 @default.
- W3170298948 cites W3039274339 @default.
- W3170298948 cites W3080872567 @default.
- W3170298948 cites W3080928871 @default.
- W3170298948 cites W3091643002 @default.
- W3170298948 cites W3098057020 @default.
- W3170298948 cites W3099523014 @default.
- W3170298948 cites W3102954282 @default.
- W3170298948 cites W3103205840 @default.
- W3170298948 cites W3104486635 @default.
- W3170298948 cites W3105858202 @default.
- W3170298948 cites W3110220108 @default.
- W3170298948 cites W3121838931 @default.
- W3170298948 cites W3123576229 @default.
- W3170298948 cites W3123922929 @default.