Timing and spectral analysis of GK Persei during the 2010 dwarf nova outburst

• DOI: 10.48550/arxiv.2502.14277
• Publication Date: 2025-02-20
• Authors: Songpeng Pei; Xiaowan Zhang; Qiang Li; Z. W. Ou; T. Z. Yang; Yongzhi Cai
• Keywords: Nova (rocket); Dwarf nova

GK Persei, an old nova and intermediate polar (IP), exhibited a dwarf (DN) outburst in 2010. This was extensively observed by the Neil Gehrels Swift Observatory, beginning 1.95 days after eruption continuing until 13.9 before maximum of optical. In this paper, we present timing spectral analyses, comparing results with those other outbursts. We confirm spin modulation 2 $-$ 10 keV X-ray range period $P_{\rm WD} = 351.325(9)$ s. Additionally, detected 0.3 band during second half observations, feature not seen 2015 2018 finding suggests that soft emission Per may originate partly near magnetic poles from wind or circumstellar material.