3D maps of the local interstellar medium: searching for the imprints of past events
Rosine Lallement

TL;DR
This paper presents a 3D map of the local interstellar medium revealing structures like the Local Bubble and a giant cavity, and discusses their possible links to past events such as a gamma-ray burst from 47 Tuc, with implications for understanding local galactic history.
Contribution
It introduces a low-resolution 3D dust map of the local ISM, highlighting large-scale structures and proposing a connection to past astrophysical events like a gamma-ray burst from 47 Tuc.
Findings
Identified large cavities and the Local Bubble in the local ISM
Linked the giant cavity to past energetic events such as a gamma-ray burst
Suggested the Gould belt's dynamics may be influenced by historical cluster crossings
Abstract
Inversion of interstellar gas or dust columns measured along the path to stars distributed in distance and direction allows reconstructing the distribution of interstellar matter (ISM) in 3D. A low resolution IS dust map based on the reddening of 23,000 stars illustrates the potential of future maps. It reveals the location of the main IS clouds within 1kpc and, owing to biases towards weakly reddened targets, regions devoid of IS matter. It traces the Local Bubble and neighboring cavities, including a giant, 1000 pc long cavity located beyond the so-called CMa tunnel, bordered by the main constituents of the Gould belt (GB), the rotating and expanding ring of clouds and young stars, inclined by 20 to the galactic plane. From comparison with diffuse X-ray background and absorption data it appears that the giant cavity is filled with warm, ionized and…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
