TXS2320+343

Alert Information

• Name/type of the alert: IceCube
• GCN notice: [1]
• Triggered by: ICECUBE Astrotrack Gold
• Alert coordinates:
  • RA: +23 22 12 (hh mm ss), Dec: +34 42 40 (dd mm ss)
  • RA, Dec in deg (ICRS): 350.54860deg, 34.71100deg
• Alert arrival time: 2022-12-23T07:43:50UTC
• Other relevant information:
  • Redshift (z):

LST Observations

• Dates of data-taking: 2022-12-23
  • 2022-12-23
    • Zenith range (deg): 31 --> 57
    • Transmission9km: N.A. (MAGIC lidar not working)
    • Observation condition: dark
    • Observation mode: std wobbles
    • Runs: 11586 - 11594
    • Joint observations with MAGIC? : yes
    • ELOG link:[2]
    • Important comments: Only runs 11586-11591 are joint with MAGIC; Error while merging DL2 files run 11589 OSError: Path /configuration/instrument/subarray/layout does not exist (skipped at the moment)

Analysis by Irene Burelli (University of Udine - irene.burelli@gmail.com)

Data-taking information

• Overall selected observation time: 118.7 min
• Selected runs: 11586 -> 11594
• Position analyzed: RA: 350.685deg, Dec: 34.612deg

DL1 data

Used DL1b files produced by LSTOSA

/fefs/aswg/data/real/DL1/20221223/v0.9/tailcut84/

DL2 data

• Random forest:

/fefs/aswg/data/models/20200629_prod5_trans_80/zenith_40deg/south_pointing/20220304_v0.9.3_prod5_trans_80_zen40az180_local_tailcut_8_4

• lstchain v0.9.6 with config file

/fefs/aswg/data/real/DL1/20210809/v0.9/tailcut84/log/lstchain_config_tailcut84_v092.json

Theta2 plot from DL2

• Cuts and parameters used:
  • intensity > 50
  • gammaness > 0.7
  • Theta2_global_cut=0.04
  • leakage < 0.2
  • norm_range_theta2_min=0.3
  • norm_range_theta2_max=0.5

Theta2 plot for TXS2320+343.

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