CSS091109:035759+102943 - a candidate polar

TL;DR

This paper presents optical and X-ray observations of a transient, suggesting it is a magnetic cataclysmic binary, likely an AM Herculis star or polar, based on its variability and spectral energy distribution.

Contribution

The study provides new optical and X-ray data confirming the classification of CSS091109:035759+102943 as a magnetic cataclysmic binary, specifically a polar.

Findings

Pronounced orbital variability with a 114-minute period

Large X-ray variability observed

Spectral energy distribution consistent with a magnetic cataclysmic binary

Abstract

We report optical time-resolved photometry of the CRTS transient CSS091109:035759+102943. Pronounced orbital variability with a 114 min period, large X-ray variability and the IR to X-ray spectral energy distribution suggest a classification as a magnetic cataclysmic binary, a likely AM Herculis star or polar.