IC-220303A

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Alert Information

• Name/type of the alert: ICECUBE Astrotrack Gold
• Triggered by: IceCube
• GCN notice: Notice + update
• Alert coordinates:
  • RA: 17 h 51 m 12.000 s, Dec: +11 deg 25 m 11.640 s
  • RA, Dec in deg (ICRS): 267.80 deg, 11.4199 deg
• Alert arrival time: 20:47 UTC
• Other relevant information:
  • Redshift (z):

LST Observations

• 2022-03-03:
  • Date (time of observation h)
    • ZD range (deg): 58 -> 47
    • Transmission 9km: 0.93
    • Runs: 7243, 7244, 7245, 7246
    • Joint observations with MAGIC? : Yes
    • ELOG: link

Fast Analysis by Alice Donini (INAF)

Configuration

• Position analyzed:
  • (RA,Dec) 17:51:12.00, 11:25:11.1 / (RA,Dec) 267.80, 11.42

• Selected observation time: 0.9h

DL1 data

• DL1 files produced by LSTOSA v0.9.2 with tailcut8-4

Random forest

• source-indep:

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

DL2 data

• source-indep
• lstchain v0.9.2

Analysis Results

Data selection

• intensity cut = 50
• gammaness cut = 0.7
• leakage_intensity_width_2 < 0.2

Theta2 plot

Theta2 plot for IC220303A.

Excess plot for IC220303A.

Fast Analysis by Kenta Terauchi

Configuration

• Analyzer: Kenta Terauchi (Kyoto Univ., email: terauchi.kenta.74s@st.kyoto-u.ac.jp)
• Position analyzed:
  • (RA,Dec) 17:51:12.00, 11:25:11.1 / (RA,Dec) 267.80, 11.42

• Selected observation time: 0.9h

DL1 data

• DL1 files produced by LSTOSA v0.9.2 with tailcut(8,4)

Random forest

• source-indep:

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

DL2 data

• source-indep
• lstchain v0.9.2

Analysis Results

Data selection

• intensity > 50
• gammaness > 0.7
• leakage_intensity_width_2 < 0.2

Theta2 plot

• theta < 0.2
• norm_range_theta2: 0.3 - 0.5 (For calculation of alpha)

Theta2 plot for IC220303A.

Count Map

Count map for IC220303A.