Taverna, Roberto https://orcid.org/0000-0002-1768-618X
Turolla, Roberto https://orcid.org/0000-0003-3977-8760
Marra, Lorenzo https://orcid.org/0009-0001-4644-194X
Kelly, Ruth M.E. https://orcid.org/0000-0002-5004-3573
Borghese, Alice https://orcid.org/0000-0001-8785-5922
Israel, Gian Luca https://orcid.org/0000-0001-5480-6438
Mereghetti, Sandro https://orcid.org/0000-0003-3259-7801
Possenti, Andrea https://orcid.org/0000-0001-5902-3731
Zane, Silvia https://orcid.org/0000-0001-5326-880X
Rigoselli, Michela https://orcid.org/0000-0001-6641-5450
Funding for this research was provided by:
Ministero dell'Università e della Ricerca (PRIN 2022LWPEXW CUP C53D23001180006)
UKRI ∣ Science and Technology Facilities Council (ST/W507891/1)
Istituto Nazionale di Astrofisica (TULiP)
Istituto Nazionale di Astrofisica (GO Grant)
International Space Science Institute (International Team project 25-657)
Article Title: The Long Quest for Vacuum Birefringence in Magnetars: 1E 1547.0–5408 and the Elusive Smoking Gun
Journal Title: The Astrophysical Journal
Article Type: paper
Copyright Information: © 2026. The Author(s). Published by the American Astronomical Society.
Publication dates
Date Received: 2026-01-21
Date Accepted: 2026-04-06
Online publication date: 2026-04-28