112 citations · 513 across the 18 of their papers we have counts for
18 papers
Solar Orbiter SEP Dropout during a Magnetic Cloud with Evidence for Strong Connectivity Gradients
Radoslav Bucik, Raul Gomez-Herrero, Samuel T. Hart +2
We analyze an impulsive solar energetic particle (SEP) event observed by Solar Orbiter at 0.93 au on 2022 December 24 that exhibits a pronounced intensity dropout between approxima…
Anomalous cosmic rays within the inner heliosphere: Observations of helium by the High Energy Telescope onboard Solar Orbiter
Zigong Xu, Robert F. Wimmer-Schweingruber, Lars Berger +11
Radial gradients of cosmic rays are key parameters for understanding the transport of particles in space. Solar Orbiter, launched on 2020 February 10, approaches the Sun approximat…
An Overview of Solar Orbiter Observations of Interplanetary Shocks in Solar Cycle 25
D. Trotta, A. Dimmock, H. Hietala +17
Interplanetary shocks are fundamental constituents of the heliosphere, where they form as a result of solar activity. We use previously unavailable measurements of interplanetary s…
Solar Electron Beam -- Langmuir Wave Interactions and How They Modify Solar Electron Beam Spectra: Solar Orbiter Observations of a Match Made in the Heliosphere
Camille Y. Lorfing, Hamish A. S. Reid, Raul Gomez-Herrero +7
Solar Orbiter's four in-situ instruments have recorded numerous energetic electron events at heliocentric distances between 0.5 and 1au. We analyse energetic electron fluxes, spect…
The Long Period of 3He-rich Solar Energetic Particles Measured by Solar Orbiter on 2020 November 17-23
R. Bucik, G. M. Mason, R. Gomez-Herrero +31
We report observations of a relatively long period of 3He-rich solar energetic particles (SEPs) measured by Solar Orbiter. The period consists of several well-resolved ion injectio…
The Electron Proton Helium INstrument as an Example for a Space Weather Radiation Instrument
Patrick Kühl, Bernd Heber, Raúl Gómez-Herrero +3
The near-Earth energetic particle environment has been monitored since the 1970's. With the increasing importance of quantifying the radiation risk for, e.g. for the human explorat…
The Solar Orbiter Science Activity Plan: translating solar and heliospheric physics questions into action
I. Zouganelis, A. De Groof, A. P. Walsh +182
Solar Orbiter is the first space mission observing the solar plasma both in situ and remotely, from a close distance, in and out of the ecliptic. The ultimate goal is to understand…
Statistical results for solar energetic electron spectra observed over 12 years with STEREO/SEPT
Nina Dresing, Frederic Effenberger, Raul Gomez-Herrero +5
We present a statistical analysis of near-relativistic (NR) solar energetic electron event spectra near 1au. We use measurements of the STEREO Solar Electron and Proton Telescope (…
Comprehensive Characterization of Solar Eruptions With Remote and In-Situ Observations, and Modeling: The Major Solar Events on 4 November 2015
Iver H. Cairns, Kamen A. Kozarev, Nariaki V. Nitta +12
Solar energetic particles (SEPs) are an important product of solar activity. They are connected to solar active regions and flares, coronal mass ejections (CMEs), EUV waves, shocks…
3He-Rich Solar Energetic Particles from Sunspot Jets
R. Bucik, M. E. Wiedenbeck, G. M. Mason +3
Solar sources of suprathermal (<1 MeV/nucleon) 3He-rich solar energetic particles (SEPs) have been commonly associated with jets originating in small, compact active regions at the…
Spectroscopic EUV observations of impulsive solar energetic particle event sources
R. Bucik, A. Fludra, R. Gomez-Herrero +4
Context. The remote observations of solar flare ion acceleration are rather limited. There are theoretical predictions for signatures of ion acceleration in EUV line profiles. Prev…
3He-Rich Solar Energetic Particles in Helical Jets on the Sun
Radoslav Bucik, Davina E. Innes, Glenn M. Mason +3
Particle acceleration in stellar flares is ubiquitous in the Universe, however, our Sun is the only astrophysical object where energetic particles and their source flares can both…
The Solar Orbiter Mission: an Energetic Particle Perspective
R. Gómez-Herrero, J. Rodríguez-Pacheco, R. F. Wimmer-Schweingruber +27
Solar Orbiter is a joint ESA-NASA mission planed for launch in October 2018. The science payload includes remote-sensing and in-situ instrumentation designed with the primary goal…
Annual Cosmic Ray Spectra from 250 MeV up to 1.6 GeV from 1995 - 2014 Measured With the Electron Proton Helium Instrument onboard SOHO
P. Kühl, R. Gómez-Herrero, B. Heber
The solar modulation of galactic cosmic rays (GCR) can be studied in detail by examining long-term variations of the GCR energy spectrum (e.g. on the scales of a solar cycle). With…
Long-lived energetic particle source regions on the Sun
R. Bucik, D. E. Innes, N. -H. Chen +3
Discovered more than 40 years ago, impulsive solar energetic particle (SEP) events are still poorly understood. The enormous abundance enhancement of the rare 3He isotope is the mo…
The Solar Energetic Particle Event on 2013 April 11: An Investigation of its Solar Origin and Longitudinal Spread
D. Lario, N. E. Raouafi, R. -Y. Kwon +4
We investigate the solar phenomena associated with the origin of the solar energetic particle (SEP) event observed on 2013 April 11 by a number of spacecraft distributed in the inn…
Multi-Spacecraft Observations of Recurrent 3He-Rich Solar Energetic Particles
R. Bucik, D. E. Innes, U. Mall +3
We study the origin of 3He-rich solar energetic particles (<1 MeV/nucleon) that are observed consecutively on STEREO-B, ACE, and STEREO-A spacecraft when they are separated in heli…
3He-rich SEP Events Observed by STEREO-A
R. Bucik, U. Mall, A. Korth +2
Using the SIT (Suprathermal Ion Telescope) instrument on STEREO-A we have examined the abundance of the rare isotope 3He during the rising activity phase of solar cycle 24 between…