WZ Sge stars/TOADs and (soft) X-ray transients: close encounters of the same kind |
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| Affiliation: | 1. School of Automation, China University of Geosciences, Wuhan 430074, China;2. Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems, Wuhan 430074, China;3. Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool L69 3GJ, United Kingdom;1. Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China;2. Anhui Juke Graphene Technology Co., Ltd., Bozhou, Anhui 233600, China;3. Aarhus University, Department of Bioscience, Arctic Research Centre (ARC), Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark;4. School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea;5. Department of Environmental Engineering, Daegu University, Gyeongsan 38453, Republic of Korea;6. Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan;7. Department of Chemical and Materials Engineering, College of Engineering, Tunghai University, Taichung 407, Taiwan;8. Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan;9. Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan;10. Pyrolysis Technology Research Group, Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia;11. Henan Province Engineering Research Center for Biomass Value-Added Products, Henan Agricultural University, Zhengzhou, Henan 450002, China;1. Federal Medical Centre, Yola, Nigeria;2. Cepheid, Sunnyvale, CA 94040, USA;1. Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel;2. Jacob Blaustein Institute of Desert Research, Sde Boker, 8499000, Israel;3. Department of Geography and Environment, Bar Ilan University, Ramat-Gan, 5290002, Israel;4. Judea Research and Development Center, Carmel, 90404, Israel |
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| Abstract: | The outbursts of WZ Sge stars (or TOADs), are compared to those seen in the (soft) X-ray transients. Both types of outbursts exhibit strong similarities: large amplitudes, long recurrence times, occurrence of superhumps, and of rebrightenings or reflares at the end or just after the main outburst. This suggests that the same kind of mechanism is at work to produce these outbursts. I also briefly discuss their differences and whether superoutbursts may exist among the very long (≳month) outbursts in U Gem stars. This report is basically similar to that by Kuulkers (1999), with a few modifications. |
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