source_id: 88
reference_id: 2014MNRAS.439.2828A
telescope: hess

data:
  livetime: 63.4h

pos:
  ra: {val: 16h40m41.0s, err: 0h0m1.0s, err_sys: 0h0m1.3s}
  dec: {val: -46d32m31s, err: 14s, err_sys: 20s}

morph:
  type: gauss
  sigma: {val: 4.3m, err: 0.2m}

# The spectral norm is not exactly what is given in the paper.
# In communication with corresponding author Stefan Ohm we figured
# out that the value 3.3e-12 given in the paper is not the norm
# parameter, but the differential flux at 1 TeV.
# This differs from the norm parameter by the following factor:
#    exp(e_ref / e_cut) = exp(1.0 / 6.0) = 1.18
# To fix this issue, we add the `1.18` to the ecpl norm "scale" below.
# See https://github.com/gammapy/gamma-cat/issues/117
spec:
  model:
    type: ecpl
    parameters:
      norm: {val: 3.3, err: 0.1, err_sys: 0.6, scale: 1.18e-12, unit: cm-2 s-1 TeV-1}
      index: {val: 2.11, err: 0.09, err_sys: 0.10}
      # TODO: Error on the cut-off energy is assymmetric: -1.2, +2.0
      e_cut: {val: 6.0, err: 2.0, unit: TeV}
      e_ref: {val: 1, unit: TeV}
