2020MNRAS.494.3699X

Query : 2020MNRAS.494.3699X

2020MNRAS.494.3699X - Mon. Not. R. Astron. Soc., 494, 3699-3711 (2020)

GeV emission of gamma-ray binary with pulsar scenario.

XINGXING H., JUMPEI T. and QINGWEN T.

Abstract (from CDS):

We study GeV emission from gamma-ray binaries by assuming that the compact object is a young pulsar. We assume that the relativistic unshocked pulsar wind with a Lorentz factor of 104–5 can produce the GeV emission by the inverse-Compton scattering process in the dense soft-photon field of the companion star. The travel distance of the unshocked pulsar wind that moves toward the observer depends on the orbital phase of the pulsar. We discuss that the orbital modulation of the GeV emission is a result of combination of the effects of the travel distance of the unshocked pulsar wind and of the anisotropic soft-photon field of the companion star. In this paper, we study how the effect of the travel distance of the unshocked pulsar wind affects to the orbital modulation of GeV emission. We apply our scenario to two gamma-ray binaries, LMC P3 and 4FGL J1405.1-6119. We find that with the suggested system parameters of LMC P3, the observed amplitude of the orbital modulation and the peak width are more consistent with the model light curve by taking into account the effect of the travel distance. For LMC P3, we analyse the GeV spectrum with 8-yr Fermi-LAT data and discuss the broadband emission process in X-ray to TeV energy bands. We predict a possible system geometry for 4FGL J1405.1-6119 by fitting the GeV light curve.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): shock waves - stars: neutron - gamma-rays: stars

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 LS I +61 303 HXB 02 40 31.6644419688 +61 13 45.593918580 11.27 11.61 10.75 10.19 9.55 B0Ve 903 2
2 SUMSS J043836-732921 BLL 04 38 37.04040 -73 29 21.1630         16.329 ~ 28 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
4 3FGL J0529.8-7242 Bla 05 29 19.0 -72 43 59           ~ 28 0
5 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
6 NGC 2029 SNR 05 35 15.5 -67 34 04     12.29     ~ 108 0
7 4FGL J0535.2-6736 HXB 05 36 00.01 -67 35 07.5           ~ 49 0
8 ICRF J060111.2-703608 Bla 06 01 11.2488493488 -70 36 08.802829692           ~ 117 2
9 HD 259440 HXB 06 32 59.2566076656 +05 48 01.160755848 9.17 9.63 9.15     B0pe 256 0
10 1FGL J1018.6-5856 HXB 10 18 55.5875706288 -58 56 45.975246900   13.638 12.683     O6V((f)) 156 0
11 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 852 0
12 2MASS J14051441-6118282 HXB 14 05 14.41560 -61 18 28.2168           O6.5III 53 0
13 V* V479 Sct HXB 18 26 15.0561548880 -14 50 54.247274304 12.02 12.23 11.27 11.04   ON6V((f))z 613 2
14 2MASS J18324516-0921545 XB* 18 32 45.162 -09 21 54.55           ~ 37 0
15 [MT91] 213 Psr 20 32 13.1247390384 +41 27 24.346666440 13.12 13.08 11.266     B0Vp 334 0

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