Ultra-long MeV transient from a relativistic jet: A tidal disruption event candidate

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Table A.1.

Spectral fit results for selected time bins using power-law and cutoff power-law models.

Name	Time-bin [s]	Power-law model			Cutoff Power-law

		Photon index	Flux [10⁻⁷ erg cm⁻² s⁻¹]	stat(dof)	E_cut [MeV]	stat(dof)
D	( − 100, 50)	1.48 ± 0.06	$2 . 7_{- 0.4}^{+ 0.6}$ $2.7^{+0.6}_{-0.4}$	208(235)	> 4	204(234)
B	(2750, 2850)	1.47 ± 0.05	$2 . 7_{- 0.3}^{+ 0.4}$ $2.7^{+0.4}_{-0.3}$	253(235)	$7_{- 6}^{+ 13}$ $7^{+13}_{-6}$	239(234)
E	(11200, 11800)	1.64 ± 0.04	$0 . 56_{- 0.05}^{+ 0.04}$ $0.56^{+0.04}_{-0.05}$	289(215)	> 14	288(214)
D+B		$1 . 77_{- 0.12}^{+ 0.17}$ $1.77^{+0.17}_{-0.12}$	$1 . 61_{- 0.50}^{+ 0.08}$ $1.61^{+0.08}_{-0.50}$	125(119)

Notes. Data between 10 keV and 40 MeV and the standard off-source background estimate is applied to D and B. For the spectrum E, an average orbital method is applied and thus spectrum at 40 keV − 40 MeV is extracted. For the cumulative D+B spectrum, we have used the average orbital background method and the spectrum at 200 keV − 40 MeV is extracted. The reported flux is evaluated at the covered energy band.

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