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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

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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).

Matrices of SL that are the Product of Two Skew-Symmetric Matrices 期刊论文 OAI收割
ADVANCES IN APPLIED CLIFFORD ALGEBRAS, 2017, 卷号: 27, 期号: 1, 页码: 475-489
作者: Dong, Lei; Huang, Lei; Shao, Changpeng; Wen, Yong

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收藏 | 浏览/下载：22/0 | 提交时间：2018/07/30

Oriented projective geometry Line geometry SL(4, R) Product of two skew-symmetric matrices SL(4, R)-Jordan form

Two co-existing germline mutations P53 V157D and PMS2 R20Q promote tumorigenesis in a familial cancer syndrome 期刊论文 OAI收割
CANCER LETTERS, 2014, 卷号: 342, 期号: 1, 页码: 36-42
作者: Wang, ZY; Sun, YH; Gao, B; Lu, Y; Fang, R

收藏 | 浏览/下载：37/0 | 提交时间：2015/07/22

P53 V157D PMS2 R20Q Germ line mutation Familial cancer syndrome Co-existing

Calculations of the beta-decay half-lives of neutron-rich nuclei 期刊论文 OAI收割
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2012, 卷号: 39, 期号: 12, 页码: 125105
Ni, DD; Ren, ZZ

收藏 | 浏览/下载：118/0 | 提交时间：2014/04/24

GAMOW-TELLER STRENGTH QUASI-PARTICLE RPA SD-SHELL NUCLEI EMISSION PROBABILITIES GROSS THEORY STABLE LINE R-PROCESS SUPPRESSION SYSTEMATICS RESONANCE

Atomic Mass Evaluation: the Mass Tables 期刊论文 OAI收割
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2011, 卷号: 59, 页码: 1318-1321
作者: Audi, G.; Wang, M.; Wapstra, A. H.; Pfeiffer, B.; Kondev, F. C.

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收藏 | 浏览/下载：17/0 | 提交时间：2018/07/16

Evaluated experimental masses Mass tables Mass surface AME2003 AME2013 Neutron drip-line r-process

Atomic Mass Evaluation: the Mass Tables 期刊论文 iSwitch采集
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2011, 卷号: 59, 期号: 2, 页码: 1318-1321
作者: Audi, G.; Wang, M.; Wapstra, A. H.; Pfeiffer, B.; Kondev, F. C.

收藏 | 浏览/下载：18/0 | 提交时间：2019/10/08

Evaluated experimental masses Mass tables Mass surface AME2003 AME2013 Neutron drip-line r-process

Establishment of platform for screening insulin-like growth factor-1 receptor inhibitors and evaluation of novel inhibitors 期刊论文 OAI收割
ACTA PHARMACOLOGICA SINICA, 2011, 卷号: 32, 期号: 7, 页码: 930-938
作者: Tong, Lin-jiang; Xie, Hua; Peng, Ting; Liu, Xiao-feng; Xin, Xian-liang

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收藏 | 浏览/下载：19/0 | 提交时间：2019/01/08

insulin like growth factor 1 receptor (IGF1R) anticancer drug enzyme-linked immunosorbent assay (ELISA) hematoxylin cell proliferation apoptosis HL-60 cell line

A fully automated system with on-line micro solid-phase extraction combined with capillary liquid chromatography-tandem mass spectrometry for high throughput analysis of microcystins and nodularin-R in tap water and lake water 期刊论文 OAI收割
journal of chromatography a, 2011, 卷号: 1218, 期号: 13, 页码: 1743-1748
作者: Shan, Yuanhong; Shi, Xianzhe; Dou, Abo; Zou, Cunjie; He, Hongbing

收藏 | 浏览/下载：15/0 | 提交时间：2012/07/09

Microcystins Nodularin-R On-line micro solid-phase extraction Capillary liquid chromatography-mass spectrometry

Environment modeling of AS-R robot based on BP Neural Network (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Xie M.-J.; Yu X.-L.; Wang Z.-Q.

收藏 | 浏览/下载：32/0 | 提交时间：2013/03/25

There are some limitations when environment model of AS-R mobile robot is obtained by only using a separate CCD camera or ultrasonic sensor array. The BP neural network is designed to fuse information of the two sensors to obtain the robot's environment model in this paper. The input of BP neural network is the intercept and slope of the edge line obtained CCD camera and ultrasonic sensor arrays which is processed by through the global coordinates of coordinate transformation. The output of BP network is the fused intercept and slope of the straight edge. Experiment shows that environment model is feasible for the AS-R mobile robot and the environment modeling method has more reliability and accuracy. 2010 IEEE.

Novel algorithm for computer-aided alignment of wide field of view complex optical system (EI CONFERENCE) 会议论文 OAI收割
Yang X.; Han C.

收藏 | 浏览/下载：32/0 | 提交时间：2013/03/25

With the advent of the new complex optical system alignment technology is necessary. In this paper is presented an alignment algorithm whose main idea is composed of damped least square method and singular value decomposition method. In addition the how and why to enter the damped factor into algorithm is explained. According to this algorithm an alignment software package was compiled and compared self-compiled software with alignment package of CODE V. Results show that this self-compiled software is much more valid than alignment package of CODE V. For a field of view of 2 R-C system average MTF over the field of view was greater than 0.3 at 50 line pairs /mm.