机构

• 紫金山天文台 [3]
• 高能物理研究所 [2]
• 上海光学精密机械研究... [2]
• 西安光学精密机械研究... [2]
• 长春光学精密机械与物... [1]
• 福建物质结构研究所 [1]
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采集方式

• OAI收割 [12]

内容类型

• 期刊论文 [12]

发表日期

• 2020 [1]
• 2019 [2]
• 2015 [1]
• 2011 [1]
• 2010 [2]
• 2009 [1]
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学科主题

• Astronomy ... [4]
• 数理科学和化学 ::... [1]

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浏览/检索结果: 共12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 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).   All-fiber polarization interference filter based uniform multiwavelength erbium-doped fiber laser 期刊论文  OAI收割 LASER PHYSICS, 2019, 卷号: 29, 期号: 5 作者:  Wang, Hushan;  Zhao, Fengyan;  Yan, Zhijun;  Hong, Xiaohu;  Song, Jiazheng   |  收藏  |  浏览/下载：106/0  |  提交时间：2019/04/29 all-fiber polarization interference filter (AFPIF)  multiwavelength fiber laser  45 degrees tilted fiber gratings   Multiwavelength Regression Algorithm for Eliminating Chamber Surface Effects of Microfluidic Chips 期刊论文  OAI收割 Applied Spectroscopy, 2019, 卷号: 73, 期号: 1, 页码: 40-46 作者:  Y.Xu;  Y.H.Wu;  J.F.Wu;  M.B.Chi   |  收藏  |  浏览/下载：47/0  |  提交时间：2020/08/24 Ultraviolet-visible,UV-Vis spectrophotometry,multiwavelength linear,regression,MLR,centrifugal microfluidic chip,surface roughness,scattering,Instruments & Instrumentation,Spectroscopy   Optical Calibration and Equivalence of a Multiwavelength Thermal/Optical Carbon Analyzer 期刊论文  OAI收割 AEROSOL AND AIR QUALITY RESEARCH, 2015, 卷号: 15, 期号: 4, 页码: 1145-+ 作者:  Riggio, Gustavo;  Kohl, Steven D.;  Trimble, Dana L.;  Chen, L. -W. Antony;  Gronstal, Steven B.   |  收藏  |  浏览/下载：42/0  |  提交时间：2018/11/08 Brown Carbon  Multiwavelength  Aerosol Light Absorption  Angstrom Absorption Exponent   LONG-TERM MONITORING OF THE TeV EMISSION FROM Mrk 421 WITH THE ARGO-YBJ EXPERIMENT 期刊论文  OAI收割 ASTROPHYSICAL JOURNAL, 2011, 卷号: 734, 期号: 2 作者:  ARGO-YBJ Collaboration 收藏  |  浏览/下载：35/0  |  提交时间：2015/12/02 BL-LAC OBJECTS  ACTIVE GALAXY MARKARIAN-421  GAMMA-RAY OBSERVATION  AIR-SHOWER ARRAY  MULTIWAVELENGTH OBSERVATIONS  CRAB-NEBULA  CORRELATED VARIABILITY  BLAZAR MARKARIAN-421  GALACTIC NUCLEI  DETECTOR   Tunable and switchable multiwavelength fiber lasers with broadband range based on nonlinear polarization rotation technique 期刊论文  OAI收割 optical engineering, 2010, 卷号: 49, 期号: 9, 页码: 094303 1-4 作者:  Li, Xiaohui;  Liu, Xueming;  Mao, Dong;  Hu, Xiaohong;  Lu, Hua 收藏  |  浏览/下载：19/0  |  提交时间：2010/12/10 fiber laser  switchable multiwavelength  fiber optics amplifiers  oscillators   A compact and efficient four-wavelength Q-switched Nd:YAP laser 期刊论文  OAI收割 Laser Physics, 2010, 卷号: 20, 期号: 4, 页码: 745-749 C. H. Huang, G. Zhang, Y. Wei, H. Y. Zhu and L. X. Huang 收藏  |  浏览/下载：28/0  |  提交时间：2012/11/02 erbium fiber laser  amplified brillouin pump  linear cavity  pulsed-laser  multiwavelength  nm   Observational Study of a Peculiar Solar Limb Event Occurred on 11 January 2002 期刊论文  OAI收割 SOLAR PHYSICS, 2009, 卷号: 258, 期号: 1, 页码: 89-104 作者:  Li, Hui;  You, Jianqi 收藏  |  浏览/下载：24/0  |  提交时间：2011/12/08 CORONAL MASS EJECTIONS  MULTIWAVELENGTH OBSERVATIONS  FLARE  PROMINENCES  DYNAMICS  SPECTRA  SURGES  SPRAYS  FLUX  LINE   Is pre-eruptive null point reconnection required for triggering eruptions? 期刊论文  OAI收割 SOLAR PHYSICS, 2006, 卷号: 237, 期号: 1, 页码: 85-100 作者:  Li, Hui;  Schmieder, Brigitte;  Aulanier, Guillaume;  Berlicki, Arkadiusz 收藏  |  浏览/下载：24/0  |  提交时间：2012/02/07 CORONAL MASS EJECTIONS  QUASI-SEPARATRIX LAYERS  MAGNETIC-FIELD  ACTIVE-REGION  SOLAR-FLARES  SHEAR  EVOLUTION  MODEL  MULTIWAVELENGTH  EMERGENCE   Spectroscopic properties of dynamical chromospheric processes in a confined solar flare 期刊论文  OAI收割 SOLAR PHYSICS, 2006, 卷号: 235, 期号: 1-2, 页码: 107-123 作者:  Li, H;  You, J;  Du, Q 收藏  |  浏览/下载：11/0  |  提交时间：2012/02/07 LINE ASYMMETRIES  MULTIWAVELENGTH  SPECTRA