Title:	Intriguing Nature of AM Her–type Candidate CXOU J204734.8+300105
Authors:	Sharma, Rahul Jain, Chetana Paul, Biswajit Dutta, Anjan Rana, Vikram
Issue Date:	10-Jul-2025
Publisher:	IOP Publishing
Citation:	The Astrophysical Journal, 2025, Vol.987, p117
Abstract:	The detection and characterization of periodic X-ray signals are crucial for identifying new compact objects and studying the mechanisms powering their emission. We report on the timing and spectral variability of CXOU J204734.8+300105, a proposed eclipsing polar-type cataclysmic variable (CV) candidate. This source has been observed once with Chandra and twice with XMM-Newton, revealing several intriguing and conflicting features in its X-ray emission. The Chandra observation showed a periodicity of ∼6000 s with an eclipse-like feature. The X-ray light curve from the 2017 XMM-Newton observation showed a period of ∼2000 s without any apparent eclipse, while the simultaneous optical light curve from the Optical Monitor showed a period of ∼6000 s. This variability raises questions about the true nature of the source. Spectral analysis indicates a multicomponent emission and emission lines due to Fe. The spectral characteristics are consistent with those observed in other CV systems. Additionally, we identified optical and near-infrared counterparts from various catalogues. Our findings suggest a dynamic and evolving accretion environment of CXOU J204734.8+300105.
Description:	Open Access
URI:	http://hdl.handle.net/2289/8420
Alternative Location:	https://ui.adsabs.harvard.edu/abs/2025arXiv250511322S/abstract https://arxiv.org/abs/2505.11322 https://inspirehep.net/literature/2922095 https://doi.org/10.3847/1538-4357/addc5b
Copyright:	2025 The Authro(s)
Appears in Collections:	Research Papers (A&A)

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