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astro-ph.HE2023
A QPO in Mkn 421 from Archival RXTE Data
Evan Smith, Lani Oramas, Eric Perlman
We report a 325(-7, +8) day quasi-periodic oscillation (QPO) in the X-ray emission of the blazar Mkn 421, based on data obtained with the Rossi X-ray Timing Explorer (RXTE). The QP…
astro-ph.HE2020
A QPO in NGC 4945 from Archival RXTE Data
Evan Smith, Rebecca Robles, Eric Perlman
We report the discovery of a ~6-week quasi-periodic oscillation (QPO) in archival NGC 4945 data observed by the Rossi X-ray Timing Explorer (RXTE) satellite. QPOs are an important…