MAGIC gamma-ray and multi-frequency observations of flat spectrum radio quasar PKS 1510−089 in early 2012

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Table 3

Comparison of the different spectral models for the Fermi-LAT data for PKS 1510−089.

Epoch

Power-law

Log parabola

σ ^b

Flux^a

Index

Loglike

Flux^a

Alpha

Beta

Loglike

MAGIC

observation

3.97 ± 0.08

2.39 ± 0.02

12241

107077

3.82 ± 0.08

2.24 ± 0.03

0.09 ± 0.02

12243

107056

Mean state

2.67 ± 0.04

2.40 ± 0.01

19943

269334

2.56 ± 0.04

2.26 ± 0.02

0.09 ± 0.01

19942

269299

Low state

0.79 ± 0.04

2.52 ± 0.04

1417

99964

0.75 ± 0.04

2.35 ± 0.07

0.12 ± 0.04

1422

99959

High state

6.50 ± 0.14

2.29 ± 0.02

7389

41207

6.24 ± 0.17

2.12 ± 0.04

0.10 ± 0.02

7421

41191

4.5

Notes.

^(a)

Flux (100 MeV–300 GeV ) is in units of [10^-6 ph cm^-2 s^-1]

^(b)

Significance by which the Log parabola model has to be preferred w.r.t. the simple power-law model (σ) calculated as [2 (Loglike_Pwl−Loglike_LogP) ] ^{1 / 2}.

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