============================
IAPS S2 SEP events Catalogue
============================

.. contents:: Table of contents

The catalogue contains SEP events observed at the Earth of class S2, i.e. with flux >100 pfu, at >10 MeV from 1995 and their properties (onset, peak flux, fluence) as well as features of the associated flare (peak time, class, location), CME (lift off, position, angle width, speed) and radio burst (occurrence of type II or IV). The SEP events having flux in the interval [10, 100) pfu at > 10 MeV are listed in the companion table S1 SEP Catalogue.

References
~~~~~~~~~~



Dataset summary
~~~~~~~~~~~~~~~

.. list-table::

  * - **internal_name:**
    - inaf_s2sep_tableset
  * - **publisher:**
    - INAF - Istituto di Astrofisica e Planetologia Spaziali
  * - **alph_code:**
    - 16B
  * - **id_tmp:**
    - 78
  * - **short_name:**
    - IAPS-S2 SEP events
  * - **identifier:**
    - aspis://inaf/s1sep_tableset
  * - **dynamic:**
    - static
  * - **size:**
    - 100kB
  * - **format:**
    - csv
  * - **type:**
    - tableset
  * - **records_number:**
    - 60
  * - **time_start:**
    - 1995-01-01
  * - **time_stop:**
    - 2014-09-10
  * - **spatial:**
    - Earth
  * - **messenger:**
    - Protons,Photons
  * - **spectral_min:**
    - 
  * - **spectral_max:**
    - 
  * - **spectral_units:**
    - 
  * - **observable:**
    - flare,CME,SEP
  * - **latest update:**
    - 2024-03-28 05:08:06

Columns specification
~~~~~~~~~~~~~~~~~~~~~

.. list-table:: 
   :widths: 7 20 15 10 48
   :align: right 
   :header-rows: 1

   * - progr
     - column
     - units
     - type
     - description
   * - 1
     - time
     - utc
     - datetime
     - UTC - Time of the peak of the SEP associated soft X -ray (SXR) flare. When the time coincides with that of the CME no information about the actual time was available.
   * - 2
     - SXR_class
     - char
     - char
     - Char - Class of the SEP associated flare according to their peak intensities
   * - 3
     - Flare_Latitude
     - deg
     - float
     - Degrees - Averaged heliographic latitude of the SEP associated flare central region from observations of the H-alpha spectral line
   * - 4
     - Flare_Longitude
     - deg
     - float
     - Degrees - Averaged heliographic longitude of the SEP associated flare central region from observations of the H-alpha spectral line. The value 91 indicates longitudes >90 the value 121 indicates longitudes >120 the value -91 indicates longitudes<-90.
   * - 5
     - CME_NOAA_date
     - utc
     - datetime
     - UTC - Date and time of the associated CME from the NOAA list (https://umbra.nascom.nasa.gov/SEP/)
   * - 6
     - CME_SOHO_date
     - utc
     - datetime
     - UTC - In case the CME NOAA Date was not present or not considered reliable in the previous column,  the date and time of the associated CME from the SOHO list (https://cdaw.gsfc.nasa.gov/CME_list/UNIVERSAL_ver1/1998_05/univ1998_05.html) is given in this c
   * - 7
     - CME_central_PA
     - deg
     - float
     - Degrees - CME position angle measured from Solar North in degrees (counter-clockwise). The value 360 indicates a halo CME.
   * - 8
     - Halo_CME_type
     - char
     - char
     - Char - Halo CMEs are indicated in the 'CME_Central_PA' column with 360. In this column the letters ('S', 'BA', 'OA') in the brackets show type of halo CMEs. Halo CMEs can be symmetric (S) or asymmetric with respect to the occulting disk. Brightness asymme
   * - 9
     - CME_angular_width
     - deg
     - float
     - Degrees - Angular width of the CME. For values =-361 more information are available  in the sOHO LASCO CME catalogue (https://cdaw.gsfc.nasa.gov/CME_list/).
   * - 10
     - CME_Speed_Art1
     - km/s
     - float
     - km/s - CME speed from catalogue of article 1 (Art1) Papaioannou et a. 2016 (doi: 10.1051/swsc/2016035)
   * - 11
     - Radio_burst_type_II
     - char
     - int
     - Int - Occurrence of type II radio burst: the value 1 indicates that the burst occurred the value 2 indicates that the burst occurred with a probability >50% the value 3 indicates that the burst occurred with a probability <50 the value 0 indicates that th
   * - 12
     - Radio_burst_type_IV
     - char
     - int
     - Int - Occurrence of type IV radio burst: the value 1 indicates that the burst occurred the value 2 indicates that the burst occurred with a probability >50% the value 3 indicates that the burst occurred with a probability <50 the value 0 indicates that th
   * - 13
     - CME_Speed_Art2
     - km/s
     - float
     - km/s - CME speed from catalogue of article2 (ART2) Gopalswamy et al. 2015 (doi: 10.48550/arXiv.1509.04216)
   * - 14
     - SOHO_CME_linear_speed
     - km/s
     - float
     - km/s - Speed from SOHO catalogue obtained through linear fit of height-time measurements
   * - 15
     - SOHO_CME_speed_2nd
     - km/s
     - float
     - km/s - Speed from SOHO catalogue obtained through quadratic fit of height-time measurements. The speed is evaluated at the time of final height measurement
   * - 16
     - SOHO_CME_speed_20_Rs
     - km/s
     - float
     - km/s - Speed from SOHO catalogue obtained through quadratic fit of height-time measurements. The speed is evaluated when the CME is at a height of 20 solar radii
   * - 17
     - CME_acceleration
     - km/s^2
     - float
     - km/s^2 - Acceleration of the CME
   * - 18
     - SXR_Fluence
     - J/m^2
     - float
     - J m^2 - Time integrated SXR intensity between the 1/3 power points on rise and fall (see Laurenza et al., 2009, doi: 10.1029/2007SW000379)
   * - 19
     - Radio_Fluence
     - sfu*min
     - float
     - sfu*min - Time integrated 1 MHz intensity from Wind/Waves from 10 minutes before the onset of integration for the SXR burst to 10 minutes after the SXR burst peak (see Laurenza et al., 2009, doi: 10.1029/2007SW000379)
   * - 20
     - Frequency
     - kHz
     - float
     - kHz - Used Wind/Waves frequency close to 1 MHz in computing the Radio_Fluence in the previous column
   * - 21
     - SEP_onset
     - utc
     - datetime
     - UTC - SEP onset time
   * - 22
     - SEP_threshold
     - utc
     - datetime
     - UTC - Time at which the >10 MeV proton flux exceeds the 10 pfu threshold
   * - 23
     - SEP_Peak_time
     - utc
     - datetime
     - UTC - Peak proton flux time at >10 MeV energies
   * - 24
     - SEP_end
     - utc
     - datetime
     - UTC - Time at the end of the SEP event at >10 MeV energies
   * - 25
     - Peak_proton_flux
     - pfu
     - float
     - pfu=1/(cm^2 s sr) - Peak proton flux at >10 MeV energies
   * - 26
     - Proton_fluence
     - #/(cm^2*sr)
     - float
     - #/(cm^2 sr) - Time integrated proton flux in the onset-end time interval
   * - 27
     - GLE
     - char
     - char
     - Char - YES or NO flag indicating the presence or the absence of a Ground Level Enhancement event, respectively.
