中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共28条,第1-10条 帮助

条数/页: 排序方式:
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:23/0  |  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).  
Angle-resolved photoelectron energy spectrum from the high-order above-threshold ionization process in IR plus XUV two-color laser fields 期刊论文  OAI收割
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2018, 卷号: 51, 期号: 24, 页码: 11
作者:  
Wang, Bingbing;  Liu, Xiaojun;  Chen, Jing;  Yang, Yujun;  Li, Fei
  |  收藏  |  浏览/下载:250/0  |  提交时间:2019/04/30
Nonsequential double ionization of helium in IR plus XUV two-color laser fields II: collision-excitation ionization process 期刊论文  OAI收割
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2018, 卷号: 51, 期号: 3
作者:  
Jin, Facheng;  Chen, Jing;  Yang, Yujun;  Liu, Xiaojun;  Yan, Zong-Chao
  |  收藏  |  浏览/下载:37/0  |  提交时间:2018/11/05
Nonsequential double ionization of helium in IR+XUV two-color laser fields II: collision-excitation ionization process 期刊论文  OAI收割
Journal of Physics B: Atomic, Molecular and Optical Physics, 2018, 卷号: 51, 期号: 3
作者:  
Yan,Zong-Chao;  Jin,Facheng;  Chen,Jing;  Yang,Yujun;  Liu,Xiaojun
  |  收藏  |  浏览/下载:47/0  |  提交时间:2018/11/05
synthesis, crystal structure and characterization of a new compound, li3nabab6o12 期刊论文  OAI收割
Solid State Sciences, 2012, 卷号: 14, 期号: 8, 页码: 1186-1190
作者:  
Chen Songjie;  Pan Shilie;  Zhao Wenwu;  Yang Zhihua;  Wu Hongping
收藏  |  浏览/下载:99/0  |  提交时间:2012/11/29
Investigation of Biological Property of Nanohydroxyapatite Materials 期刊论文  OAI收割
Journal of Nanoscience and Nanotechnology, 2012, 卷号: 12, 期号: 2, 页码: 894-901
X. F. Pang; H. W. Zhou; J. L. Liu
收藏  |  浏览/下载:20/0  |  提交时间:2013/02/05
Synthesis, crystal structure and optical properties of Li2Cu5(PO4)(4) 期刊论文  OAI收割
Solid State Sciences, 2011, 卷号: 13, 期号: 6, 页码: 1304-1308
作者:  
Cui Liang;  Pan Shilie;  Han Jian;  Dong Xiaoyu;  Zhou Zhongxiang
收藏  |  浏览/下载:85/0  |  提交时间:2012/11/29
The properties of a large sample of OH/IR stars, S stars and C-rich AGB stars 期刊论文  OAI收割
ASTROPHYSICS AND SPACE SCIENCE, 2010, 卷号: 330, 期号: 1, 页码: 23-36
作者:  
Zhang, Hai-juan;  Zhou, Jian-jun;  Dong, Guo-liang;  Esimbek, Jarken;  Mu, Ji-mang
收藏  |  浏览/下载:18/0  |  提交时间:2015/08/25
Study on Biosorption of Uranium by Rhodotorula Glutinis 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 卷号: 29, 页码: 1218-1221
作者:  
Ding Hua-jie;  Wu Xiao-lei;  Li Xiao-fei;  Bai Jing
  |  收藏  |  浏览/下载:20/0  |  提交时间:2018/05/31
6 Ligand-controlled First Hyperpolarizabilities of a Series of Tetrahedral Iridium Clusters Ir-4(CO)(9)L: a TDDFT Study 期刊论文  OAI收割
Chinese Journal of Structural Chemistry, 2009, 卷号: 28, 期号: 1, 页码: 106-112
F. J. Li, R. J. Sa, Y. J. Wei and K. C. Wu
收藏  |  浏览/下载:23/0  |  提交时间:2012/11/06