Search Publications
Morphological Evolution of the Hosts of Far-infrared/Submillimeter Galaxies
Yan, Haojing; Ling, Chenxiaoji
We present a host morphological study of 1266 far-infrared galaxies (FIRGs) and submillimeter galaxies (SMGs) in the Cosmic Evolution Survey field using the F160W and F814W images obtained by the Hubble Space Telescope. The FIRGs and SMGs are selected from the Herschel Multi-tiered Extragalactic Survey and the SCUBA-2 Cosmology Legacy Survey, resp…
Quantitative Characterization of Magnetic Flux Rope Properties for Two Solar Eruption Events
Qiu, Jiong; Jiang, Chaowei; Hu, Qiang +2 more
In order to bridge the gap between heliospheric and solar observations of coronal mass ejections (CMEs), one of the key steps is to improve the understanding of their corresponding magnetic structures like the magnetic flux ropes (MFRs). But it remains a challenge to confirm the existence of a coherent MFR before or upon the CME eruption on the Su…
The Yaglom Scaling of the Third-order Structure Functions in the Inner Heliosphere Observed by Helios 1 and 2
He, Jiansen; Wang, Xin; Tu, Chuanyi +2 more
The third-order scaling law, Yaglom law, of Elsässer fluctuations in the solar wind is believed to reflect the inertial range energy cascade of the MHD turbulence and provides an approach to evaluate the cascade rate. However, the occurrence ratio with the Yaglom scaling law, the fraction of the intervals where the Yaglom linear scaling is observe…
γ-Ray Emission from Classical Nova V392 Per: Measurements from Fermi and HAWC
Lee, W. H.; Alvarez, C.; Hernandez, S. +89 more
This paper reports on the γ-ray properties of the 2018 Galactic nova V392 Per, spanning photon energies ~0.1 GeV-100 TeV by combining observations from the Fermi Gamma-ray Space Telescope and the HAWC Observatory. As one of the most rapidly evolving γ-ray signals yet observed for a nova, GeV γ-rays with a power-law spectrum with an index Γ = 2.0 ±…
The Fast Radio Burst-emitting Magnetar SGR 1935+2154-Proper Motion and Variability from Long-term Hubble Space Telescope Monitoring
Lyman, J. D.; Kouveliotou, C.; Fruchter, A. S. +3 more
We present deep Hubble Space Telescope (HST) near-infrared (NIR) observations of the magnetar SGR 1935+2154 from 2021 June, approximately 6 yr after the first HST observations, a year after the discovery of fast-radio-burst-like emission from the source, and in a period of exceptional high-frequency activity. Although not directly taken during a b…
Stellar Populations of Lyα-emitting Galaxies in the HETDEX Survey. I. An Analysis of LAEs in the GOODS-N Field
Finkelstein, Steven L.; Leung, Gene C. K.; Jung, Intae +17 more
We present the results of a stellar population analysis of 72 Lyα-emitting galaxies (LAEs) in GOODS-N at 1.9 < z < 3.5 spectroscopically identified by the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). We provide a method for connecting emission-line detections from the blind spectroscopic survey to imaging counterparts, a crucial t…
Low-frequency Radio Continuum Imaging and SED Modeling of 11 LIRGs: Radio-only and FUV to Radio Bands
Małek, Katarzyna; Charmandaris, Vassilis; Seymour, Nicholas +5 more
We present a detailed analysis of 11 local luminous infrared galaxies from ultraviolet through far-infrared to radio (~70 MHz to ~15 GHz) bands. We derive the astrophysical properties through spectral energy distribution (SED) modeling using the Code Investigating GALaxy Emission (CIGALE) and UltraNest codes. The radio SEDs include our new observa…
Diagnosing the Optically Thick/Thin Features Using the Intensity Ratio of Si IV Resonance Lines in Solar Flares
Ding, M. D.; Li, Y.; Hong, Jie +1 more
In the optically thin regime, the intensity ratio of the two Si IV resonance lines (1394 and 1403 Å) are theoretically the same as the ratio of their oscillator strengths, which is exactly 2. Here, we study the ratio of the integrated intensity of the Si IV lines (R = ∫I 1394(λ)dλ/∫I 1403(λ)dλ) and the ratio of intensity at e…
The Accretion Process in the DQ Tau Binary System
Ábrahám, P.; Kóspál, Á.; Fiorellino, E. +1 more
Mass accretion from the circumstellar disk onto the protostar is a fundamental process during star formation. Measuring the mass accretion rate is particularly challenging for stars belonging to binary systems, because it is often difficult to discriminate which component is accreting. DQ Tau is an almost equal-mass spectroscopic binary system whe…
Binaries with Possible Compact Components Discovered from the LAMOST Time-domain Survey of Four K2 Plates
Liu, Jifeng; Zhang, Haotong; Wang, Song +4 more
Time-domain spectroscopic data from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) can provide accurate and high-cadence radial velocities (RVs). In this work, we search for binaries with compact components with the RV monitoring method by using the LAMOST time-domain survey of four K2 plates. Three binary systems including…