首次XSPECT/XPoSat研讨会的重要性与科学成果

Importance and Science Outcomes from the first XSPECT/XPoSat Workshop

Anuj Nandi, Rwitika Chatterjee, V. P. Shyam Prakash, Ankur Kushwaha, M. C. Ramadevi, Kiran M. Jayasurya, Vivek K. Agrawal, M. Varun, Karan Akbari, Arya Sudhakaran, Daneshwar Bhandari, Vishal Kale, Vishal Jadoliya, Suchismito Chattopadhyay, Sakshi Maurya, Swasthik Visakh S, Debasish Krishnatreya, M Dhamodhar Reddy, Akash Agarwal, Giridharan L., Meghamani Halder, Juris N. J., Athira Mohanan, P. Majumder, Arbind Pradhan, Deblina Lahiri, Abhishek Jhala, Garima Tyagi, Abhisek Tamang, Akshara S B, P Aromal, Sreetama Das Choudhury, Sunirmal Rana, Ajith Balu, Mary Bosco, Jeyaraman Ilangovan, Shivani Chaudhary, Bhranti Rao, Biyas Chowdhury, Joysankar Majumdar, Sanjeeva Rao Prattipati, Subhasish Das, Sandip Naskar, Swapnil Singh, Vaishali S, Koushal Vadodariya, Radhakrishna Vatedka, Anurag Tyagi, Sachin Narang, Prapti Mittal, Madhu K, Brindavan Mahto

arXiv 2607.21365首次发表：2026-07-24更新：2026-07-24

AI 中文总结

首次XSPECT/XPoSat研讨会，通过讲座与实操让参与者对七类天体进行端到端数据分析，展示了仪器科学潜力，凸显了其科学前景及合作培训对利用其成果和未来印度空间天文任务的重要性。

AI 中文摘要

本文总结了首次利用XPoSat上XSPECT探测器观测数据进行数据分析研讨会的科学成果。该研讨会汇聚了早期研究人员和专家，通过讲座与实际操作分析来探索仪器科学能力。参与者对七类天体进行了端到端数据分析，包括校准、光谱建模和定时研究。这些观测数据来自XSPECT运行的第一年，并配有内部开发软件。对不同天体的分析展示了仪器的科学潜力，凸显了XSPECT的科学前景以及合作培训对充分利用其科学成果和未来印度空间天文任务的重要性。

英文摘要

This paper summarizes the science outcomes of the first Workshop on Data Analysis using observations from the XSPECT payload onboard the XPoSat, which brought together early-career researchers and experts to explore the instrument's scientific capabilities through lectures and hands-on analyses. Participants performed end-to-end data analysis, including calibration, spectral modeling, and timing studies, on seven sources comprising Neutron Star Low-Mass X-ray Binaries, pulsars, and Black Hole X-ray Binaries, demonstrating the instrument's scientific potential. The observations, obtained during the first year of XSPECT operations, together with in-house developed software, were provided to the participants, making them the first users outside the instrument team to analyze XSPECT data. For NS-LMXBs, Aql X-1 exhibited a classical Type-I X-ray burst, enabling constraints on the stellar radius through spectral fitting. Sco X-1, observed across its complete Z-track, revealed systematic spectral evolution driven by accretion-rate fluctuations and disk-corona coupling, while Cir X-1 displayed orbital phase-dependent transitions between hard and soft states, reflecting changes in accretion geometry. Among accretion-powered pulsars, GX 301-2 showed a double-peaked, energy-dependent pulse profile and strong iron fluorescence lines due to stellar wind reprocessing, whereas Vela X-1 exhibited orbital phase-dependent absorption and steady coronal temperatures. Among BH-XRBs, Cyg X-1 transitioned from a hard to soft-intermediate state with increasing disk contribution and spectral softening, while Cyg X-3 remained in the intermediate state with multiple emission lines originating from a clumpy stellar wind. The workshop outcomes highlight the scientific promise of XSPECT and the importance of collaborative training in maximizing the science from XSPECT and future Indian space astronomy missions.

CommentsA White Paper on Outcomes of the First National Workshop of XSPECT on-board XPoSat Mission

论文原文

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