中国科学院机构知识库网格系统: 检索

Unravelling the nature of the dual AGN in the galaxy pair system IRAS 05589+2828 and 2MASX J06021107 + 2828382 期刊论文 OAI收割
Monthly Notices of the Royal Astronomical Society, 2022, 卷号: 516, 期号: 4, 页码: 5270
作者: Benítez, E.; Jiménez-Bailón, E.; Negrete, C. A.; Ruschel-Dutra, D.; Rodríguez-Espinosa, J. M.

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收藏 | 浏览/下载：5/0 | 提交时间：2023/11/10

galaxies: active galaxies: evolution quasars: emission lines quasars: individual: IRAS 05589+2828 2MASX J06021107 + 2828382 galaxies: Seyfert Astrophysics - Astrophysics of Galaxies

Multiwavelength Observations of Fast Radio Bursts 期刊论文 OAI收割
Universe, 2021, 卷号: 7, 页码: 76
作者: Nicastro, Luciano; Guidorzi, Cristiano; Palazzi, Eliana; Zampieri, Luca; Turatto, Massimo

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收藏 | 浏览/下载：7/0 | 提交时间：2021/11/18

Detection of two bright radio bursts from magnetar SGR 1935 + 2154 期刊论文 OAI收割
Nature Astronomy, 2021, 卷号: 5, 页码: 414
作者: Kirsten, F.; Snelders, M. P.; Jenkins, M.; Nimmo, K.; van den Eijnden, J.

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收藏 | 浏览/下载：10/0 | 提交时间：2021/11/18

Enhanced Localization of Transients Based on a Novel Cross-correlation Method 期刊论文 OAI收割
The Astrophysical Journal, 2021, 卷号: 920, 页码: 43
作者: Xiao, S.; Xiong, S. L.; Zhang, S. N.; Song, L. M.; Lu, F. J.

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收藏 | 浏览/下载：34/0 | 提交时间：2021/11/18

A fast radio burst source at a complex magnetised site in a barred galaxy 预印本 OAI收割
2021
作者: Xu, H.; Niu, J. R.; Chen, P.; Lee, K. J.; Zhu, W. W.

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收藏 | 浏览/下载：39/0 | 提交时间：2021/12/02

High Energy Astrophysical Phenomena

Detection of Flare Multiperiodic Pulsations in Mid-ultraviolet Balmer Continuum, Lyl Hard X-Ray, and Radio Emissions Simultaneously 期刊论文 OAI收割
The Astrophysical Journal, 2021, 卷号: 921, 页码: 179
作者: HXMT

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收藏 | 浏览/下载：17/0 | 提交时间：2022/02/08

Solar flares Solar oscillations Solar ultraviolet emission Solar x-ray emission Solar radio emission 1496 1515 1533 1536 1522 Astrophysics - Solar and Stellar Astrophysics Abstract: Quasi-periodic pulsations (QPPs), which usually appear as temporal pulsations of the total flux, are frequently detected in the light curves of solar/stellar flares. In this study, we present the investigation of nonstationary QPPs with multiple periods during the impulsive phase of a powerful flare on 2017 September 6, which were simultaneously measured by the Hard X-ray Modulation Telescope (Insight-HXMT), as well as the ground-based BLENSW. The multiple periods, detected by applying a wavelet transform and Lomb-Scargle periodogram to the detrended light curves, are found to be ~20-55 s in the Ly`and mid-ultraviolet Balmer continuum emissions during the flare impulsive phase. Similar QPPs with multiple periods are also found in the hard X-ray emission and low-frequency radio emission. Our observations suggest that the flare QPPs could be related to nonthermal electrons accelerated by the repeated energy release process, i.e., triggering of repetitive magnetic reconnection, while the multiple periods might be modulated by the sausage oscillation of hot plasma loops. For the multiperiodic pulsations, other generation mechanisms could not be completely ruled out.

Insight-HXMT detection of a bright short x-ray counterpart of the Fast Radio Burst from SGR 1935+2154 ATEL OAI收割
2020
作者: Zhang, S. -N.; Tuo, Y. -L.; Xiong, S. -L.; Li, C. -K.; Xiao, S.

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收藏 | 浏览/下载：48/0 | 提交时间：2020/07/03

X-ray Gamma Ray Soft Gamma-ray Repeater Fast Radio Burst

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：16/0 | 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).

Insight-hxmt observations of the first binary neutron star merger gw170817 期刊论文 iSwitch采集
Science china-physics mechanics & astronomy, 2018, 卷号: 61, 期号: 3, 页码: 8
作者: Li, Tipei; Xiong, ShaoLin; Zhang, ShuangNan; Lu, FangJun; Song, LiMing

收藏 | 浏览/下载：145/0 | 提交时间：2019/04/23

Gw170817 Bns merger Gravitational wave electromagnetic counterpart

Testing the equation of state of neutron stars with electromagnetic observations 期刊论文 OAI收割
2018
作者: Degenaar, N.; Suleimanov, V. F.

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收藏 | 浏览/下载：15/0 | 提交时间：2019/07/11