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浏览/检索结果: 共107条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 A study in scarlet I. Photometric properties of a sample of intermediate-luminosity red transients 期刊论文  OAI收割 ASTRONOMY & ASTROPHYSICS, 2025, 卷号: 695 作者:  Valerin, G.;  Pastorello, A.;  Reguitti, A.;  Benetti, S.;  Cai YZ(蔡永志)   |  收藏  |  浏览/下载：58/0  |  提交时间：2025/03/24 circumstellar matter  supernovae: general  supernovae: individual: NGC 300 2008OT-1  supernovae: individual: AT 2019abn  supernovae: individual: AT 2019ahd  supernovae: individual: AT 2019udc   A study in scarlet II. Spectroscopic properties of a sample of intermediate-luminosity red transients 期刊论文  OAI收割 ASTRONOMY & ASTROPHYSICS, 2025, 卷号: 695 作者:  Valerin, G.;  Pastorello, A.;  Mason, E.;  Reguitti, A.;  Benetti, S.   |  收藏  |  浏览/下载：60/0  |  提交时间：2025/03/24 circumstellar matter  supernovae: general  supernovae: individual: NGC 300 2008OT-1  supernovae: individual: AT 2019abn  supernovae: individual: AT 2019ahd  supernovae: individual: AT 2019udc   The Origin of Seismic and Tectonic Activity Underlying the Sichuan Basin, Central China 期刊论文  OAI收割 TECTONICS, 2023, 卷号: 42, 期号: 5, 页码: 20 作者:  Su, Zhe;  Buergmann, Roland;  Wang, Erchie   |  收藏  |  浏览/下载：13/0  |  提交时间：2023/12/29 seismic activity of the Sichuan basin (China)  bookshelf rotation  strike-slip faulting  the 2008 Wenchuan Mw 7  9 earthquake  crystalline basement   Periodicity Search on X-Ray Bursts of SGR J1935+2154 Using 8.5 yr of Fermi/GBM Data 期刊论文  OAI收割 The Astrophysical Journal, 2021, 卷号: 923, 页码: L30 作者:  HXMT   |  收藏  |  浏览/下载：22/0  |  提交时间：2022/02/08 2008  1471  Astrophysics - High Energy Astrophysical Phenomena  Abstract: We performed a systematic search for X-ray bursts of the SGR J1935+2154 using the Fermi Gamma-ray Burst Monitor continuous data dated from 2013 January to 2021 October. Eight bursting phases, which consist of a total of 353 individual bursts, are identified. We further analyze the periodic properties of our sample using the Lomb-Scargle periodogram. The result suggests that those bursts exhibit a period of ~238 days with a ~63.2% duty cycle. Based on our analysis, we further predict two upcoming active windows of the X-ray bursts. Since 2021 July, the beginning date of our first prediction has been confirmed by the ongoing X-ray activities of the SGR J1935+2154.   An empirical attenuation model of the peak ground acceleration (PGA) in the near field of a strong earthquake 期刊论文  OAI收割 NATURAL HAZARDS, 2020, 页码: 25 作者:  Yao, Xianglong;  Qi, Shengwen;  Liu, Chunling;  Guo, Songfeng;  Huang, Xiaoling   |  收藏  |  浏览/下载：69/0  |  提交时间：2020/12/07 Peak ground acceleration (PGA)  Empirical attenuation model  Near field  Strong earthquake  The 2008 Wenchuan earthquake  Earthquake-induced landslides   Neighborhood interactions on seedling survival were greatly altered following an extreme winter storm 期刊论文  OAI收割 FOREST ECOLOGY AND MANAGEMENT, 2020, 卷号: 461 作者:  Wang, Yunquan;  Cadotte, Marc W.;  Chen, Jianhua;  Mi, Xiangcheng;  Ren, Haibao   |  收藏  |  浏览/下载：23/0  |  提交时间：2022/03/01 Community assembly  Extreme cold spells  Species coexistence  Subtropical forest  the 2008 Chinese winter storms   Constraining the X-Ray-Infrared Spectral Index of Second-timescale Flares from SGR 1935+2154 with Palomar Gattini-IR 期刊论文  OAI收割 The Astrophysical Journal, 2020, 卷号: 901, 页码: L7 作者:  HXMT   |  收藏  |  浏览/下载：25/0  |  提交时间：2022/02/08 Radio transient sources  Magnetars  Soft gamma-ray repeaters  2008  992  1471  Astrophysics - High Energy Astrophysical Phenomena  Astrophysics - Instrumentation and Methods for Astrophysics  Abstract: The Galactic magnetar SGR 1935+2154 has been reported to produce the first example of a bright millisecond-duration radio burst (FRB 200428) similar to the cosmological population of fast radio bursts (FRBs). The detection of a coincident bright X-ray burst represents the first observed multiwavelength counterpart of an FRB. However, the search for similar emission at optical wavelengths has been hampered by the high inferred extinction on the line of sight. Here, we present results from the first search for second-timescale emission from the source at near-infrared (NIR) wavelengths using the Palomar Gattini-IR observing system in the J band, enabled by a novel detector readout mode that allows short exposure times of ?0.84 s with 99.9% observing efficiency. With a total observing time of ?12 hr (?47,728 images) during its 2020 outburst, we place median 3Ҡlimits on the second-timescale NIR fluence of ?18 Jy ms (13.1 AB mag). The corresponding extinction-corrected limit is ?125 Jy ms for an estimated extinction of AJ = 2.0 mag. Our observations were sensitive enough to easily detect an NIR counterpart of FRB 200428 if the NIR emission falls on the same power law as observed across its radio to X-ray spectrum. We report nondetection limits from epochs of four simultaneous X-ray bursts detected by the Insight-HXMT and NuSTAR telescopes during our observations. These limits provide the most stringent constraints to date on fluence of flares at 1014 Hz, and constrain the fluence ratio of the NIR emission to coincident X-ray bursts to RNIR ? 0.025 (fluence index ?0.35).   Local structural and geomorphological controls on landsliding at the Leigu restraining bend of the Beichuan-Yingxiu fault system during the 2008 M-w 7.9 Wenchuan earthquake 期刊论文  OAI收割 LANDSLIDES, 2019, 卷号: 16, 期号: 12, 页码: 2485-2498 作者:  Yuan, Renmao;  Wang, Ying;  Jin, Jialiang;  Cunningham, Dickson   |  收藏  |  浏览/下载：27/0  |  提交时间：2020/05/19 2008 Wenchuan earthquake  Leigu landslide  Longmenshan  Restraining bend  Beichuan fault   Breaking the Habit: The Peculiar 2016 Eruption of the Unique Recurrent Nova M31N 2008-12a 期刊论文  OAI收割 ASTROPHYSICAL JOURNAL, 2018, 卷号: 857, 期号: 1, 页码: 68 作者:  Hounsell, R.;  Horst, J. Chuck;  Hornoch, K.;  Hartmann, D. H.;  Harris, B.   |  收藏  |  浏览/下载：77/0  |  提交时间：2018/06/01 Galaxies: Individual (M31)  Stars: Individual (M31n 2008-12a)  Ultraviolet: Stars  X-rays: Binaries  Novae  Cataclysmic Variables   The characteristics of environmental particulate matter in the urban area of Beijing, China, during the 2008 Olympic Games 期刊论文  OAI收割 ATMOSPHERIC POLLUTION RESEARCH, 2017, 卷号: 8, 期号: 1, 页码: 141-148 作者:  Qiao, Qingqing;  Huang, Baochun;  Piper, John D. A.;  Biggin, Andrew J.;  Zhang, Chunxia   |  收藏  |  浏览/下载：40/0  |  提交时间：2017/11/17 Atmospheric Pollution  2008 Olympic Games  Beijing  Pm10  Magnetic Susceptibility  Heavy Metals