Difference between revisions of "Analysis BLLac Oct 2022"

From my_wiki
Jump to: navigation, search
(DL2 data)
(Significance of the detection)
Line 38: Line 38:
  
 
* 1 Off reflected position
 
* 1 Off reflected position
* alpha cut: 10 deg
+
* cut
 +
** intensity > 100
 +
** gammaness > 0.7
 +
** alpha < 10
  
* Number of ON events: 881
+
* Number of ON events: 128864
* Number of OFF events: 616 +/- 25
+
* Number of OFF events: 113599
* Excess: 265 +/- 39
+
* Excess: 15265
* Li&Ma significance: 6.9 sigma  
+
* Li&Ma significance: 31 sigma  
  
 
[[File:Alpha_BLLac_20221020_SNozaki.png|400px]]
 
[[File:Alpha_BLLac_20221020_SNozaki.png|400px]]

Revision as of 09:16, 27 October 2022

BL Lacertae flare Oct 2022

General information

  • Name of the source: BL Lacertae
  • Brief description of the source:
    • IBL / LBL
    • highly variable
    • z = 0.069
    • RA: 22 02 43.3 (hh mm ss), Dec: +42 16 40 (dd mm ss)
    • RA, Dec in deg (ICRS): 330.68038, 42.277772

Data-taking information

DL1 data

Standard run-wise data files produced by LSTOSA.

  • tailcut 8-4 (with cleaning based on pedestal RMS)
/fefs/aswg/data/real/DL1/20221020/v0.9/tailcut84/


Fast analysis by Seiya Nozaki (source-dependent analysis)

DL2 data

  • lstchain v0.9
  • source-dependent

Significance of the detection

  • 1 Off reflected position
  • cut
    • intensity > 100
    • gammaness > 0.7
    • alpha < 10
  • Number of ON events: 128864
  • Number of OFF events: 113599
  • Excess: 15265
  • Li&Ma significance: 31 sigma

Alpha BLLac 20221020 SNozaki.png

DL3 analysis

  • Science Tool: gammapy 0.20.1
  • intensity > 30
  • r: [0, 1 ]
  • wl: [0.05, 1]
  • leakage_intensity_width_2: [0, 0.2 ]
  • fixed_gh_cut: 0.7
  • fixed_theta_cut: 0.2


  • 2022-10-20

SED BLLac 20221020 SNozaki.png

LC BLLac 20221020 SNozaki.png



Back to the Data analysis page