Difference between revisions of "GRB221221A"

From my_wiki
Jump to: navigation, search
(Created page with "== Alert Information == * '''Name/type of the alert''': Fermi-GBM Final Position * '''GCN notice''': [https://gcn.gsfc.nasa.gov/other/693355175.fermi] * '''Triggered by''': F...")
 
(Theta2 plot from DL2)
Line 62: Line 62:
 
**Theta2_global_cut=0.04
 
**Theta2_global_cut=0.04
 
**leakage < 0.2
 
**leakage < 0.2
** norm_range_theta2_min=0.3      
+
** norm_range_theta2_min=0.4      
** norm_range_theta2_max=0.5
+
** norm_range_theta2_max=0.6
  
 
{| align='center'
 
{| align='center'

Revision as of 17:11, 4 January 2023

Alert Information

  • Name/type of the alert: Fermi-GBM Final Position
  • GCN notice: [1]
  • Triggered by: Fermi-GBM
  • Alert coordinates:
    • RA: +05 27 17 (hh mm ss), Dec: +63 23 60 (dd mm ss)
    • RA, Dec in deg (ICRS): 84.94deg, 59.03deg
  • Alert arrival time: 2022-12-21T23:01:17UTC
  • Other relevant information:
    • Redshift (z):

Multi-wavelength Observations

LST Observations

  • Dates of data-taking: 2022-12-21
    • 2022-12-21
      • Zenith range (deg): 34 --> 32
      • Transmission9km: N.A. (MAGIC lidar not working)
      • Observation condition: dark
      • Observation mode: std wobbles
      • Runs: 11551 - 11559
      • Joint observations with MAGIC? : yes
      • ELOG link:[2]
      • Important comments:

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

Data-taking information

  • Overall selected observation time: 161.4 min
  • Selected runs: 11551 -> 11559
  • Position analyzed: RA 84.94deg, Dec 59.03deg


DL1 data

Used DL1b files produced by LSTOSA

/fefs/aswg/data/real/DL1/20221221/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=0.4
    • norm_range_theta2_max=0.6
Theta2 plot for GRB221221A.
Theta2 plot for GRB221221A.