SOHO/ERNE
proton event catalog

Solar cycle 23: 1996-2008		Back to list of Catalogs		Solar cycle 24: 2009-2018
	Search among all events from 1996 to 2018

This catalog lists the proton enhancements from the High Energy Detector (HED) aboard SOHO/ERNE instrument identified during solar cycle (SC) 23 (1996÷2008) and SC24 (2009÷2018). The catalog lists the peak intensity for the solar proton events in the different HED energy channels (in the range 14÷131 MeV) and additional information organized in table-form separately for SC23 and SC24.

Explanatory notes:
Proton peak: identified at the maximum of the particle profile (local enhancements are not considered).
Onset time: identified as the time of 3-sigma intensity value above pre-event level.
Peak time: the time at the peak proton intensity.
J_p: peak proton intensity after subtraction of the pre-event level in protons/(cm² s sr MeV).
class: GOES soft X-ray flare class
speed: linear speed of the CME in km s^-1
time: all time markers are in UT

The reported here onset/peak times and J_p are based on 5-min averaged data.

Abbreviations:
AW: angular width of the CME (in degrees)
CME: coronal mass ejection
N/A: onset not found and/or it was fully masked by previous ongoing event
nd: next day
pd: previous day
p: peak is poorly defined
u: uncertain
v: visual

Acknowledgements:
We use proton data provided by SOHO/ERNE PI Prof. Eino Valtonen
(ERNE data is also available via: SEPServer data server);
flare information from: GOES flare listings   and   www.Solarmonitor.org;
and CME information from: CDAW LASCO CME catalog.

We acknowledge the use of SOHO/ERNE data in our study. SOHO is a project of international collaboration between ESA and NASA.

Disclaimer: The data used is a subject to instrumental saturation effects.

Contact: R. Miteva

Links: Space Climate Group Homepage  
 Space Research and Technology Institute Homepage

SOHO/ERNE proton event catalog is part of SEP origin project
The SEP origin project is supported by: