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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).

Baryon acoustic oscillation, Hubble parameter, and angular size measurement constraints on the Hubble constant, dark energy dynamics, and spatial curvature 期刊论文 OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 卷号: 488, 期号: 3, 页码: 3844-3856
作者: Ryan, Joseph; Chen, Yun; Ratra, Bharat

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收藏 | 浏览/下载：17/0 | 提交时间：2020/03/10

cosmological parameters dark energy cosmology: observations

Assessing the effect of lens mass model in cosmological application with updated galaxy-scale strong gravitational lensing sample 期刊论文 OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 卷号: 488, 期号: 3, 页码: 3745-3758
作者: Chen, Yun; Li, Ran; Shu, Yiping; Cao, Xiaoyue

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收藏 | 浏览/下载：78/0 | 提交时间：2020/03/10

gravitational lensing: strong Galaxies: structure cosmological parameters cosmology: observations

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: a tomographic measurement of structure growth and expansion rate from anisotropic galaxy clustering in Fourier space 期刊论文 OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 卷号: 484, 期号: 1, 页码: 442-450
作者: Zheng, Jinglan; Zhao, Gong-Bo; Li, Jian; Wang, Yuting; Chuang, Chia-Hsun

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收藏 | 浏览/下载：10/0 | 提交时间：2020/03/10

cosmological parameters large-scale structure of Universe cosmology: observations cosmology: theory

Model-independent Curvature Determination from Gravitational-wave Standard Sirens and Cosmic Chronometers 期刊论文 OAI收割
ASTROPHYSICAL JOURNAL, 2018, 卷号: 868, 期号: 1, 页码: 8
作者: Wei, Jun-Jie

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收藏 | 浏览/下载：31/0 | 提交时间：2019/04/08

cosmological parameters cosmology: observations gravitational waves

The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measurement of the growth rate of structure from the anisotropic correlation function between redshift 0.8 and 2.2 期刊论文 OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2018, 卷号: 477, 期号: 2, 页码: 1626-1650
作者: Zarrouk, Pauline; Burtin, Etienne; Gil-Marin, Hector; Ross, Ashley J.; Tojeiro, Rita

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收藏 | 浏览/下载：31/0 | 提交时间：2020/03/10

cosmological parameters cosmology: observations dark energy large-scale structure of Universe

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: constraining modified gravity 期刊论文 OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2018, 卷号: 475, 期号: 2, 页码: 2122-2131
作者: Mueller, Eva-Maria; Percival, Will; Linder, Eric; Alam, Shadab; Zhao, Gong-Bo

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收藏 | 浏览/下载：38/0 | 提交时间：2020/03/11

gravitation cosmological parameters dark energy large-scale structure of Universe cosmology: observations cosmology: theory

Diagnosing holographic type dark energy models with the Statefinder hierarchy, composite null diagnostic and w-w ' pair 期刊论文 OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2018, 卷号: 61, 期号: 3, 页码: 39811
作者: Zhao, Z; Wang, S

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收藏 | 浏览/下载：29/0 | 提交时间：2018/12/27

PROBE WMAP OBSERVATIONS EQUATION-OF-STATE COSMOLOGICAL CONSTRAINTS ACCELERATING UNIVERSE COSMIC COINCIDENCE QUINTESSENCE TRANSITION SUPERNOVAE INFLATION COMPONENT

The minimal GUT with inflaton and dark matter unification 期刊论文 OAI收割
EUROPEAN PHYSICAL JOURNAL C, 2018, 卷号: 78, 期号: 1, 页码: 26
作者: Wu, L; Li, TJ; Hu, S; Gogoladze, I; Chen, HY

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收藏 | 浏览/下载：105/0 | 提交时间：2018/12/27

PROBE WMAP OBSERVATIONS STANDARD MODEL COSMOLOGICAL CONSTANT CP INVARIANCE HIGGS-BOSON UNIVERSE MASS LHC SUPERNOVAE NEUTRINOS

Diagnosing holographic type dark energy models with the Statefinder hierarchy, composite null diagnostic and w-w ' pair 期刊论文 OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2018, 卷号: 61, 期号: 3, 页码: 39811
作者: Zhao, Z; Wang, S

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收藏 | 浏览/下载：16/0 | 提交时间：2019/07/19

Probe Wmap Observations Equation-of-state Cosmological Constraints Accelerating Universe Cosmic Coincidence Quintessence Transition Supernovae Inflation Component