Back to Search
Start Over
Frequency-dependent polarization of repeating fast radio bursts-implications for their origin.
- Source :
-
Science . 3/18/2022, Vol. 375 Issue 6586, p1266-1270. 5p. 4 Color Photographs. - Publication Year :
- 2022
-
Abstract
- The polarization of fast radio bursts (FRBs), which are bright astronomical transient phenomena, contains information about their environments. Using wide-band observations with two telescopes, we report polarization measurements of five repeating FRBs and find a trend of lower polarization at lower frequencies. This behavior is modeled as multipath scattering, characterized by a single parameter, sRM, the rotation measure (RM) scatter. Sources with higher sRM have higher RM magnitude and scattering time scales. The two sources with the highest sRM, FRB 20121102A and FRB 20190520B, are associated with compact persistent radio sources. These properties indicate a complex environment near the repeating FRBs, such as a supernova remnant or a pulsar wind nebula, consistent with their having arisen from young stellar populations. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00368075
- Volume :
- 375
- Issue :
- 6586
- Database :
- Academic Search Index
- Journal :
- Science
- Publication Type :
- Academic Journal
- Accession number :
- 155818573
- Full Text :
- https://doi.org/10.1126/science.abl7759