Journal article
A VLA Study of Newly Discovered Southern Latitude Nonthermal Filaments in the Galactic Center: Polarimetric and Magnetic Field Properties
The Astrophysical journal, Vol.974(2), 200
10/01/2024
DOI: 10.3847/1538-4357/ad74fe
Abstract
A population of structures unique to the Galactic Center (GC), known as the nonthermal filaments (NTFs), has been studied for over 40 yr, but much remains unknown about them. In particular, there is no widely accepted and unified understanding for how the relativistic electrons illuminating these structures are generated. One possibility is that there are compact and extended sources of cosmic rays, which then diffuse along magnetic flux tubes leading to the illumination of the NTFs through synchrotron emission. In this work, we present and discuss the polarimetric distributions associated with a set of faint NTFs in the GC that have only been studied in total intensity previously. We compare the derived polarized intensity, rotation measure, and intrinsic magnetic field distributions for these structures with the results obtained for previously observed GC NTFs. The results are then used to enhance our understanding of the large-scale polarimetric properties of the GC. We then use the derived polarimetric distributions to constrain models for the mechanisms generating the relativistic electrons that illuminate these structures.
Details
- Title: Subtitle
- A VLA Study of Newly Discovered Southern Latitude Nonthermal Filaments in the Galactic Center: Polarimetric and Magnetic Field Properties
- Creators
- Dylan M. Paré - Villanova UniversityCornelia C. Lang - University of IowaMark R. Morris - University of California, Los Angeles
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.974(2), 200
- Publisher
- The American Astronomical Society
- DOI
- 10.3847/1538-4357/ad74fe
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Number of pages
- 14
- Grant note
- National Science Foundation: AST-1614782, AST-1615375
We would like to thank the anonymous referee for their helpful comments and suggestions on the paper. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. This work was supported in part by National Science Foundation grants AST-1614782 to UCLA and AST-1615375 to the University of Iowa.
- Language
- English
- Date published
- 10/01/2024
- Academic Unit
- Physics and Astronomy; Liberal Arts and Science Admin
- Record Identifier
- 9984736612302771
Metrics
1 Record Views