Comparison of distance measurements to dust clouds using GRB X-ray haloes and 3D dust extinction - Archive ouverte HAL
Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2023

Comparison of distance measurements to dust clouds using GRB X-ray haloes and 3D dust extinction

Résumé

X-ray photons from energetic sources such as gamma-ray bursts (GRBs) can be scattered on dust clouds in the Milky Way, creating a time-evolving halo around the GRB position. X-ray observations of such haloes allow the measurement of dust cloud distances in the Galaxy on which the scattering occurs. We present the first systematic comparison of the distances to scattering re gions deriv ed from GRB haloes with the 3D dust distribution deriv ed from recently published optical-to-near infrared e xtinction maps. GRB haloes were observed around seven sources by the Swift XRT and the XMM-Newton EPIC instruments, namely GRB 031203, GRB 050713A, GRB 050724, GRB 061019, GRB 070129, GRB 160623A, and GRB 221009A. We used four 3D extinction maps that exploit photometric data from different surv e ys and apply div erse algorithms for the 3D mapping of extinction, and compared the X-ray halo-derived distances with the local maxima in the 3D extinction density distribution. We found that in all GRBs, we can find at least one local maximum in the 3D dust extinction map that is in agreement with the dust distance measured from X-ray rings. For GRBs with multiple X-ray rings, the dust distance measurements coincide with at least three maxima in the extinction map for GRB 160623A, and five maxima for GRB 221009A. The agreement of these independent distance measurements shows that the methods used to create dust extinction maps may potentially be optimized by the X-ray halo observations from GRBs.

Dates et versions

hal-04783797 , version 1 (14-11-2024)

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B Šiljeg, Ž Bošnjak, V Jelić, A Tiengo, F Pintore, et al.. Comparison of distance measurements to dust clouds using GRB X-ray haloes and 3D dust extinction. Monthly Notices of the Royal Astronomical Society, 2023, 526, pp.2605 - 2619. ⟨10.1093/mnras/stad2946⟩. ⟨hal-04783797⟩
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