e-ISSN: Pending
Negative / Null Result ReportOpen accessPhysics

The null result of a search for pulsational variations of the surface magnetic field in the roAp star gamma Equulei

O. Kochukhov; T. Ryabchikova; J. D. Landstreet; W. W. Weiss · 2004 · arXiv

WASTE classifies this as Negative / Null Result Report · AI classification, approximate

The study found no significant effect — useful as a negative control or null benchmark for your own design.

Abstract (excerpt)

We describe an analysis of the time-resolved measurements of the surface magnetic field in the roAp star gamma Equ. We have obtained a high-resolution and high S/N spectroscopic time-series, and the magnetic field was determined using Zeeman resolved profiles of the Fe II 6149.25 A and Fe I 6173.34 A lines. Contrary to recent reports we do not find any evidence of magnetic variability with pulsation phase, and derive an upper limit of 5-10 G for pulsational modulation of the surface magnetic field in gamma Equ.

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Metadata source: arXiv