ICTS:30674

Video URL

Constraining Inflationary Magnetogenesis and Reheating via GWs

Constraining Inflationary Magnetogenesis and Reheating via GWs

(2025). Constraining Inflationary Magnetogenesis and Reheating via GWs. SciVideos. https://youtu.be/3rOdHVuNsCg

Constraining Inflationary Magnetogenesis and Reheating via GWs. SciVideos, Jan. 01, 2025, https://youtu.be/3rOdHVuNsCg 

          @misc{ scivideos_ICTS:30674,
            doi = {},
            url = {https://youtu.be/3rOdHVuNsCg},
            author = {},
            keywords = {},
            language = {en},
            title = {Constraining Inflationary Magnetogenesis and Reheating via GWs},
            publisher = {},
            year = {2025},
            month = {jan},
            note = {ICTS:30674 see, \url{https://scivideos.org/index.php/icts-tifr/30674}}
          }
Subhasis Maiti
Talk numberICTS:30674
Source RepositoryICTS-TIFR
Collection

Abstract

By utilizing constraints on primordial magnetic fields (PMFs), their contributions to secondary gravitational waves (GWs), and recent results from pulsar timing arrays (PTAs), we establish bounds on the reheating epoch. Our analysis reveals that the combined spectral density of both primary and secondary GWs (generated by PMFs) can generally be characterized as a broken power law with five distinct indices. The spectral behavior of the GWs varies significantly based on the equation of state (EoS), resulting in unique shapes that can readily distinguish different scenarios. Furthermore, we demonstrate that the GWs produced are sufficient to account for the recently observed signals in PTAs under specific reheating scenarios. Importantly, these signals are also likely to be detected by future GW observatories, enhancing our ability to decode the early universe and shed light on inflationary magnetogenesis mechanisms.