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浏览/检索结果: 共8条，第1-8条 帮助

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Understanding the Lyα Emission Observed by the Solar Disk Imager Aboard the Advanced Space-Based Solar Observatory 期刊论文  OAI收割
SOLAR PHYSICS, 2025, 卷号: 300, 期号: 6
作者:  Li, Yiliang;  Zhang, Ping;  Tian, Zhengyuan;  Feng, Li;  Shi, Guanglu
  |  收藏  |  浏览/下载：21/0  |  提交时间：2025/06/16
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：33/0  |  提交时间：2024/08/12
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：34/0  |  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).  
Study of Flare Energy Release Using Events with Numerous Type III-like Bursts in Microwaves 期刊论文  OAI收割
SOLAR PHYSICS, 2012, 卷号: 280, 期号: 2, 页码: 537-549
作者:  Meshalkina, N. S.;  Altyntsev, A. T.;  Zhdanov, D. A.;  Lesovoi, S. V.;  Kochanov, A. A.
收藏  |  浏览/下载：50/0  |  提交时间：2016/11/24
Particle acceleration and gamma rays in solar flares: Recent observations and new modeling 期刊论文  OAI收割
ADVANCES IN SPACE RESEARCH, 2012, 卷号: 50, 期号: 6, 页码: 736-756
作者:  Miroshnichenko, L. I.;  Gan, W. Q.
收藏  |  浏览/下载：99/0  |  提交时间：2013/01/31
Radioheliograph Observations of Microwave Bursts with Zebra Structures 期刊论文  OAI收割
SOLAR PHYSICS, 2011, 卷号: 273, 期号: 1, 页码: 163-177
作者:  Altyntsev, A. T.;  Lesovoi, S. V.;  Meshalkina, N. S.;  Sych, R. A.;  Yan, Y.
收藏  |  浏览/下载：30/0  |  提交时间：2017/04/20
On Integrated Hard X-Ray Broken-Up Spectra of Solar Flares 期刊论文  OAI收割
SOLAR PHYSICS, 2011, 卷号: 269, 期号: 1, 页码: 59-66
作者:  Li, Y. P.;  Gan, W. Q.
收藏  |  浏览/下载：78/0  |  提交时间：2012/08/07
On bandwidth of solar subsecond bursts in cm-range 期刊论文  OAI收割
ADVANCES IN SPACE RESEARCH, 2008, 卷号: 41, 期号: 6, 页码: 936-942
作者:  Meshalkina, N. S.;  Altyntsev, A. T.;  Yan, Yihua
收藏  |  浏览/下载：33/0  |  提交时间：2017/04/05