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  Lensed radio arcs at milli-arcsecond resolution: Methods, science results, and current status

Powell, D. M. (2024). Lensed radio arcs at milli-arcsecond resolution: Methods, science results, and current status. In H. Stacey, A. Sonnenfeld, & C. Grillo (Eds.), IAUS 381: Strong gravitational lensing in the era of Big Data (pp. 46-51). Cambridge, UK: Cambridge University Press. doi:10.1017/S1743921323004106.

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Lensed radio arcs at milli-arcsecond resolution Methods, science results, and current status.pdf (Any fulltext), 449KB
 
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 Creators:
Powell, Devon M.1, Author           
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1Computational Structure Formation, MPI for Astrophysics, Max Planck Society, ou_2205642              

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 Abstract: Strong gravitational lensing by galaxies provides us with a powerful laboratory for testing dark matter models. Various particle models for dark matter give rise to different small-scale distributions of mass in the lens galaxy, which can be differentiated with sensitive observations. Th. The sensitivity of a gravitational lens observation to the presence (or absence) of low-mass dark structures in the lens galaxy is determined mainly by the angular resolution of the instrument and the spatial structure of the source. Here, I discuss results from the analysis of a global VLBI observation of a gravitationally lensed radio jet. With an angular resolution better than 5 milli-arcseconds and a highly extended, spatially resolved source, we are able to place competitive constraints on the particle mass in fuzzy dark matter models using this single observation. I also discuss preliminary results from our analysis of warm dark matter models using this lens system.

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Language(s): eng - English
 Dates: 2024-03-04
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1017/S1743921323004106
Other: LOCALID: Reihe: IAU...381, p.46-51
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Title: 378th Symposium of the International Astronomical Union
Place of Event: Apulia / Puglia, Italy
Start-/End Date: 2023-06-19 - 2023-06-23

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Title: IAUS 381: Strong gravitational lensing in the era of Big Data
Source Genre: Proceedings
 Creator(s):
Stacey, Hannah, Editor
Sonnenfeld, Alessandro, Editor
Grillo, Claudio, Editor
Affiliations:
-
Publ. Info: Cambridge, UK : Cambridge University Press
Pages: - Volume / Issue: 381 Sequence Number: - Start / End Page: 46 - 51 Identifier: ISSN: 1743-9213

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Title: Proceedings of the International Astronomical Union
Source Genre: Series
 Creator(s):
International Astronomical Union, Editor              
Affiliations:
-
Publ. Info: Cambridge, UK : Cambridge University Press
Pages: - Volume / Issue: 381 Sequence Number: - Start / End Page: - Identifier: ISSN: 1743-9213