DOI: 10.5281/zenodo.18325037
title: SPEARHEAD E>100 MeV SOHO/ERNE catalogue

description: The SPEARHEAD E>100 MeV SOHO/ERNE catalogue includes 172 Solar Energetic Particle (SEP) events. A description of the catalogue's contents follow:



Columns 1–2 list the SEP event number and identifier.

Columns 3–4 give the event date, start time at SOHO/ERNE >100 MeV, and background level of the analysed channel.

Columns 5–11 summarize SOHO/EPHIN >100 MeV results: background, peak flux, fluence, and end time.

Columns 12–19 provide Soft X-ray (SXR) flare details (start, peak, and end times; peak flux; fluence; position; and observing spacecraft).

Columns 20–28 list the corresponding Hard X-ray (HXR) parameters when available (onset, peak, and end times; magnitude; total counts; energy range; position; and observer).

Columns 29–49 describe radio emissions: type III (Cols 29–35), type II (Cols 36–42), and type IV (Cols 43–49), including the observing station or spacecraft, onset time, and frequency range (MHz).

Columns 50–56 contain γ-ray information (onset, peak, and end times; peak intensity; total counts; and observer).

Columns 57–60 list associated Coronal Mass Ejection (CME) data (first appearance, plane-of-sky speed, width, and identification source, e.g. SOHO/LASCO). 

Columns 61–64 summarize Ground LEvel Enhancement (GLE) characteristics (reference number, intensity, fluence, and station).

Column 65 provides comments and cross-references to other published SEP catalogues.
description: Detail structure of the catalogue

-  Columns 1 and 2: identification of the event    -  Column 1: Catalogue entry number    -  Column 2: Event identifier

-  Columns 3 and 4: SOHO/ERNE data information    -  Column 3: Time of onset (in UT)    -  Column 4: Background mean of the channel [counts]

-  Columns 5 to 11: SOHO/EPHIN data information    -  Column 5: Background of the of >100 MeV proton proxy channel [1/(cm^2.sr.s.MeV)]    -  Column 6: Peak flux of the event [1/(cm^2.sr.s.MeV)]    -  Column 7: Relative uncertainty on peak flux [%]    -  Column 8: Fluence of the event [1/(cm^2.sr.MeV)]    -  Column 9: Relative uncertainty on fluence [%]    -  Column 10: End time (for the integration) (in DOY)    -  Column 11: Comments

-  Columns 12 to 19: soft X-rays flare information    -  Column 12: Time of onset (in UT)    -  Column 13: Time of peak flux (in UT)    -  Column 14: Time of end (in UT)    -  Column 15: Soft X-ray class (1-8 Angström soft X-ray peak intensity in terms of C, M and X nomenclature where these represent intensities of 10^6, 10^5, and 10^4 W/m^2 respectively)    -  Column 16: Fluence [J/m^2]    -  Column 17: X-ray location on the solar surface (in Stonyhurst heliographic coordinates, North (N) or South (S), and East (E) or West (W)) [degrees]    -  Column 18: Spacecraft observer    -  Column 19: Comments

-  Columns 20 to 28: hard X-ray flare information    -  Column 20: Time of onset (in UT)    -  Column 21: Time of peak flux (in UT)    -  Column 22: Time of end (in UT)    -  Column 23: Peak intensity [counts/s]    -  Column 24: Total counts [counts]    -  Column 25: Energy range [keV]    -  Column 26: Hard X-ray flare location on the solar surface (longitude, latitude in Carrington coordinates) [degrees]    -  Column 27: Spacecraft/instrument observer    -  Column 28: Comments

-  Columns 29 to 35: radio type III information    -  Column 29 to 31: Ground-based observations        -  Column 29: Ground-based station observer        -  Column 30: Onset time (in UT)        -  Column 31: Frequency range [MHz]    -  Column 32 to 34: Space-borne observations        -  Column 32: Spacecraft/instrument observer        -  Column 33: Onset time (in UT)        -  Column 34: Frequency range [kHz]    -  Column 35: Comments

-  Columns 36 to 42: radio type II information    -  Column 36 to 38: Ground-based observations        -  Column 36: Ground-based station observer        -  Column 37: Onset time (in UT)        -  Column 38: Frequency range [MHz]    -  Column 39 to 41: Space-borne observations        -  Column 39: Spacecraft/instrument observer        -  Column 40: Onset time (in UT)        -  Column 41: Frequency range [kHz]    -  Column 42: Comments

-  Columns 43 to 49: radio type IV information    -  Column 43 to 45: Ground-based observations        -  Column 43: Ground-based station observer        -  Column 44: Onset time (in UT)        -  Column 45: Frequency range [MHz]    -  Column 46 to 49: Space-borne observations        -  Column 46: Spacecraft/instrument observer        -  Column 47: Onset time (in UT)        -  Column 48: Duration [min]        -  Column 49: End frequency [MHz]

-  Columns 50 to 56: gamma-rays information    -  Column 50: Time of onset (in UT)    -  Column 51: Time of peak flux (in UT)    -  Column 52: Time of end (in UT)    -  Column 53: Peak intensity [counts/s]    -  Column 54: Total counts [counts]    -  Column 55: Spacecraft/instrument observer    -  Column 56: Comments

-  Columns 57 to 60: CME information    -  Column 57: Time of first appearance (in UT)    -  Column 58: Linear speed [km/s]    -  Column 59: Angular width [deg]    -  Column 60: Source of information

-  Column 61 to 64: GLE information    -  Column 61: GLE name    -  Column 62: Integral intensity [%.h]    -  Column 63: Omni-directional integral fluence [cm^(-2)]    -  Column 64: Name of observer

-  Column 65: General notes