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	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：24/0 \| 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 A_J = 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 R_NIR ? 0.025 (fluence index ?0.35).
	Multiple Auxiliaries Assisted Airborne Power Line Detection 期刊论文 OAI收割 ieee transactions on industrial electronics, 2017, 卷号: 64, 期号: 6, 页码: 4810-4819 作者: Shan, Haotian; Zhang, Jun; Cao, Xianbin; Li, Xuelong; Wu, Dapeng 收藏 \| 浏览/下载：49/0 \| 提交时间：2017/06/06 Automatic auxiliaries selection Bayesian network context low altitude flight power line detection
	Detection and fault diagnosis of power transmission line in infrared image 会议论文 OAI收割 2015 IEEE International Conference on Cyber Technology in Automation, Control, and Intelligent Systems (CYBER), Shenyang, China, June 8-12, 2015 作者: He SY(何思远); Yang DW(杨大为); Li WT(李文涛); Xia Y(夏泳); Tang YD(唐延东) 收藏 \| 浏览/下载：27/0 \| 提交时间：2015/12/20 power transmission line infrared image object detection fault diagnosis
	Power line detection from optical images 期刊论文 OAI收割 neurocomputing, 2014, 卷号: 129, 期号: si, 页码: 350-361 作者: Song, Biqin; Li, Xuelong 收藏 \| 浏览/下载：37/0 \| 提交时间：2015/03/18 Power line detection Threat avoidance Matched filter Line segment pool Graph-cut model
	Overhead power line detection from UAV video images 会议论文 OAI收割 2012 19th International Conference on Mechatronics and Machine Vision in Practice, M2VIP 2012, Auckland, New zealand, November 28-30, 2012 作者: Yang TW(杨唐文); Yin, Hang; Ruan QQ(阮秋琦); Han JD(韩建达); Qi JT(齐俊桐) 收藏 \| 浏览/下载：60/0 \| 提交时间：2017/03/14 power line detection UAV image binarization Hough Transform Fuzzy C-means Clustering algorithm