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浏览/检索结果: 共177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 Asymmetric Hard X-ray Radiation of Two Ribbons in a Thermal-Dominated C-Class Flare 期刊论文  OAI收割 SOLAR PHYSICS, 2024, 卷号: 299, 期号: 7 作者:  Shi, Guanglu;  Feng, Li;  Chen, Jun;  Ying, Beili;  Li, Shuting   |  收藏  |  浏览/下载：8/0  |  提交时间：2024/08/12 Flares  Energetic particles  Heating  In flares  Active regions  Magnetic fields  Spectrum  X-ray   Discovery of late-time X-ray flare and anomalous emission line enhancement after the nuclear optical outburst in a narrow-line Seyfert 1 Galaxy 期刊论文  OAI收割 Astronomy and Astrophysics, 2022, 卷号: 660 作者:  Zhang, W. J.;  Shu, X. W.;  Sheng, Z. F.;  Sun, L. M.;  Dou, L. M.   |  收藏  |  浏览/下载：96/0  |  提交时间：2022/05/16 galaxies: active  galaxies: nuclei  X rays: individuals: CSS J102913+404220  galaxies: Seyfert  accretion, accretion disks  X rays: bursts   The variability and soft X-ray excess properties of narrow-line Seyfert 1 galaxies: The Swift view 期刊论文  OAI收割 ASTRONOMY & ASTROPHYSICS, 2022, 卷号: 659 作者:  Ding, Nan;  Gu, Qiusheng;  Tang, Yunyong;  Xiong DR(熊定荣);  Guo, Xiaotong   |  收藏  |  浏览/下载：54/0  |  提交时间：2022/04/06 galaxies: active  galaxies: Seyfert  X-rays: galaxies   Sensitive Chandra coverage of a representative sample of weak-line quasars: revealing the full range of X-ray properties 期刊论文  OAI收割 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 卷号: 511, 期号: 4, 页码: 5251-5264 作者:  Ni, Q;  Brandt, W N;  Luo, B;  Garmire, G P;  Hall, P B   |  收藏  |  浏览/下载：68/0  |  提交时间：2022/03/28 galaxies: active  galaxies: nuclei  quasars: general  X-rays: galaxies   Hierarchically interconnected porous MnxCo3-xO4 spinels for Low-temperature catalytic reduction of NO by CO 期刊论文  OAI收割 JOURNAL OF CATALYSIS, 2022, 卷号: 406, 页码: 72-86 作者:  Liu, Shaomian;  Ji, Yongjun;  Xu, Wenqing;  Zhang, Jianling;  Jiang, Ruihuan   |  收藏  |  浏览/下载：48/0  |  提交时间：2022/06/15 Hierarchically interconnected pore  Mn-Co mixed oxides  CO-DeNO(x)  Low-temperature activity  Wide active temperature window   MOF derived 2.x-dimensional trimetallic catalysts for selective aromatization to p-xylene 期刊论文  OAI收割 Fuel Processing Technology, 2022, 卷号: 235, 期号: 0, 页码: 107374 作者:  Zeng DH(曾德红);  Zhu GL(朱刚利);  Xia CG(夏春谷)   |  收藏  |  浏览/下载：39/0  |  提交时间：2022/12/06 Aromatization catalysts  2.x dimensional layered structure  Trimetallic MOF  Coordination unsaturated active sites  p-Xylene   In-situ SERS readout strategy to improve the reliability of beta-galactosidase activity assay based on X-gal staining in shortening incubation times 期刊论文  OAI收割 TALANTA, 2021, 卷号: 234 作者:  Li, Shaofei;  Cheng, Yizhuang;  Chen, Siyu;  Qin, Miao;  Li, Pan   |  收藏  |  浏览/下载：63/0  |  提交时间：2021/11/01 Beta-galactosidase  X-gal staining  SERS-active needle  In-situ readout  High staining background   BAT AGN Spectroscopic Survey. XX. Molecular Gas in Nearby Hard-X-Ray-selected AGN Galaxies 期刊论文  OAI收割 The Astrophysical Journal Supplement Series, 2021, 卷号: 252, 期号: 2 作者:  Koss,Michael J.;  Strittmatter,Benjamin;  Lamperti,Isabella;  Shimizu,Taro;  Trakhtenbrot,Benny   |  收藏  |  浏览/下载：33/0  |  提交时间：2021/12/06 Active galactic nuclei  AGN host galaxies  Molecular gas  Surveys  X-ray active galactic nuclei  Survival analysis  Submillimeter astronomy  High energy astrophysics  Seyfert galaxies  Catalogs   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.   Piercing through Highly Obscured and Compton-thick AGNs in the Chandra Deep Fields. II. Are Highly Obscured AGNs the Missing Link in the Merger-triggered AGN–Galaxy Coevolution Models? 期刊论文  OAI收割 The Astrophysical Journal, 2020, 卷号: 903, 期号: 1 作者:  Li,Junyao;  Xue,Yongquan;  Sun,Mouyuan;  Brandt,William N.;  Yang,Guang   |  收藏  |  浏览/下载：41/0  |  提交时间：2021/12/06 AGN host galaxies  Active galaxies  X-ray active galactic nuclei