The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 20 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. The survey is open until Dec 18, 2023. We thank you in advance for your valuable feedback.

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ASCA light curve of HT Cas

This folded ASCA eclipse light curve is of the nonmagnetic cataclysmic variable HT Cas. The upper panel shows the data and the best-fit model, the lower panel the residuals. The short transitions to and out of the eclipse indicate that the X-ray emission region is not much larger than the white dwarf primary.

X-ray light curve of HT Cas


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Last modified: Thursday, 26-Jun-2003 13:48:44 EDT

The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 20 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. The survey is open until Dec 18, 2023. We thank you in advance for your valuable feedback.