{"paper":{"title":"Discovery of a WZ Sge-Type Dwarf Nova, SDSS J102146.44+234926.3: Unprecedented Infrared Activity during a Rebrightening Phase","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Arai, A. Imada, A. Ueda, D. Nogami, E. Pavlenko, H. Katagiri, H. Maehara, H. Takahashi, K. Nakajima, K. Okita, K. Sadakane, K. S. Kawabata, K. Yanagisawa, M. Kino, M. Uemura, M. Yoshida, N. A. Katysheva, O. Nagae, S. Chiyonobu, S. Sato, S. Yu. Shugarov, T. Hayashi, T. Kato, T. Krajci, T. Mizuno, T. Ohsugi, T. Yamashita, V. P. Goranskij, Y. Fukazawa","submitted_at":"2007-11-19T02:38:24Z","abstract_excerpt":"Several SU UMa-type dwarf novae, in particular, WZ Sge-type stars tend to exhibit rebrightenings after superoutbursts. The rebrightening phenomenon is problematic for the disk instability theory of dwarf novae since it requires a large amount of remnant matter in the disk even after superoutbursts. Here, we report our optical and infrared observations during the first-ever outburst of a new dwarf nova, SDSS J102146.44+234926.3. During the outburst, we detected superhumps with a period of 0.056281 +/- 0.000015 d, which is typical for superhump periods in WZ Sge stars. In conjunction with the ap"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0711.2831","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}