84 citations · 1.1k across the 33 of their papers we have counts for
15 papers · 1 filter
Numerical and experimental evidence for a new interpretation of residence times in space
A. Vogt, N. E. Engelbrecht, B. Heber +2
We investigate the energy dependence of Jovian electron residence times, which allows for a deeper understanding of adiabatic energy changes that occur during charged particle tran…
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…
On the Interaction of Galactic Cosmic Rays with Heliospheric Shocks During Forbush Decreases
Anamarija Kirin, Bojan Vršnak, Mateja Dumbović +1
Forbush decreases (FDs) are depletions in the galactic cosmic ray (GCR) count rate that last typically for about a week and can be caused by coronal mass ejections (CMEs) or corota…
Galactic cosmic ray hydrogen spectra and radial gradients in the inner heliosphere measured by the HELIOS Experiment 6
Johannes Marquardt, Bernd Heber
Context: The HELIOS solar observation probes provide unique data regarding their orbit and operation time. One of the onboard instruments, the Experiment 6 (E6), is capable of meas…
Implementation and validation of the GEANT4/AtRIS code to model the radiation environment at Mars
Jingnan Guo, Saša Banjac, Lennart Roestel +4
A new GEANT4 particle transport model -- the Atmospheric Radiation Interaction Simulator (AtRIS, Banjac et al. 2018a. J. Geophys. Res.) -- has been recently developed in order to m…
Catalogue of >55 MeV Wide-longitude Solar Proton Events Observed by SOHO, ACE, and the STEREOs at 1 AU during 2009-2016
Miikka Paassilta, Athanasios Papaioannou, Nina Dresing +3
Based on energetic particle observations made at 1 AU, we present a catalogue of 46 wide-longitude (>45°) solar energetic particle (SEP) events detected at multiple locati…
Modeling the evolution and propagation of the 2017 September 9th and 10th CMEs and SEPs arriving at Mars constrained by remote-sensing and in-situ measurement
Jingnan Guo, Mateja Dumbović, Robert F. Wimmer-Schweingruber +13
On 2017-09-10, solar energetic particles (SEPs) originating from the active region 12673 were registered as a ground level enhancement (GLE) at Earth and the biggest GLE on the sur…
Long-lasting injection of solar energetic electrons into the heliosphere
Nina Dresing, Raúl Gómez-Herrero, Bernd Heber +3
The main sources of solar energetic particle (SEP) events are solar flares and shocks driven by coronal mass ejections (CMEs). While it is generally accepted that energetic protons…
Using Forbush decreases to derive the transit time of ICMEs propagating from 1 AU to Mars
Johan L. Freiherr von Forstner, Jingnan Guo, Robert F. Wimmer-Schweingruber +13
The propagation of 15 interplanetary coronal mass ejections (ICMEs) from Earth's orbit (1 AU) to Mars (~ 1.5 AU) has been studied with their propagation speed estimated from both m…
An empirical modification of the force field approach to describe the modulation of galactic cosmic rays close to Earth in a broad range of rigidities
Jan Gieseler, Bernd Heber, Konstantin Herbst
On their way through the heliosphere, Galactic Cosmic Rays (GCRs) are modulated by various effects before they can be detected at Earth. This process can be described by the Parker…
Catalogue of 55-80 MeV solar proton events extending through solar cycles 23 and 24
Miikka Paassilta, Osku Raukunen, Rami Vainio +9
We present a new catalogue of solar energetic particle events near the Earth, covering solar cycle 23 and the majority of solar cycle 24 (1996-2016), based on the 55-80 MeV proton…
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…
Efficiency of particle acceleration at interplanetary shocks: Statistical study of STEREO observations
Nina Dresing, Solveig Theesen, Andreas Klassen +1
Context. Among others, shocks are known to be accelerators of energetic charged particles. However, many questions regarding the acceleration efficiency and the required conditions…
Injection of solar energetic particles into both loop legs of a magnetic cloud
Nina Dresing, Raúl Gómez-Herrero, Bernd Heber +4
Each of the two STEREO spacecraft carries a SEPT Instrument which measures electrons and protons. Anisotropy observations are provided in four viewing directions. The SEP event on…
Variations of dose rate observed by MSL/RAD in transit to Mars
Jingnan Guo, Cary Zeitlin, Robert F. Wimmer-Schweingruber +14
Aims: To predict the cruise radiation environment related to future human missions to Mars, the correlation between solar modulation potential and the dose rate measured by the Rad…