A5100360777- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Pulsars and Gravitational Waves Research
- Cosmology and Gravitation Theories
- Plant and animal studies
- Terahertz technology and applications
- Random lasers and scattering media
- Plant Diversity and Evolution
- Spectroscopy and Laser Applications
- Atmospheric Ozone and Climate
- Nuclear Receptors and Signaling
- Neurogenesis and neuroplasticity mechanisms
- Relativity and Gravitational Theory
- Semiconductor Quantum Structures and Devices
- Chronic Lymphocytic Leukemia Research
- Leprosy Research and Treatment
- Particle accelerators and beam dynamics
- Neutrino Physics Research
- Plant and Fungal Species Descriptions
National Astronomical Observatories
2021-2024
Chinese Academy of Sciences
2013-2024
University of Chinese Academy of Sciences
2013-2024
Diego Portales University
2024
Liaoning University
2018
Kunming Institute of Zoology
2016-2017
Kunming Institute of Botany
2013
The dispersive sweep of fast radio bursts (FRBs) has been used to probe the ionized baryon content intergalactic medium, which is assumed dominate total extragalactic dispersion. While host galaxy contributions dispersion measure (DM) appear be small for most FRBs, in at least one case there evidence an extreme magneto-ionic local environment and a compact persistent source. Here we report detection localization repeating FRB 20190520B, co-located with compact, source associated dwarf high...
Abstract A complete accounting of nearby objects—from the highest-mass white dwarf progenitors down to low-mass brown dwarfs—is now possible, thanks an almost set trigonometric parallax determinations from Gaia, ground-based surveys, and Spitzer follow-up. We create a census objects within Sun-centered sphere 20 pc radius check published literature decompose each binary or higher-order system into its separate components. The result is volume-limited ∼3600 individual star formation products...
Abstract We report on the optical spectroscopic observations of host galaxy hyperactive repeating fast radio burst (FRB) FRB 20240114A. The is a dwarf at redshift z = 0.1306 ± 0.0002. With rest-frame coverage 4300–7900 Å, we have detected H α , β [O iii ] λλ 4959,5007, [N ii 6548,6583, and [S λ 6716 emission lines. line ratios suggest that ionization in dominated by star formation. formation rate (SFR) derived from (0.06 0.01) M ⊙ yr −1 spectral energy distribution fitting suggests lower...
WISE J224607.6–052634.9 (W2246–0526) is a hot dust-obscured galaxy at z = 4.601, and the most luminous obscured quasar known to date. W2246–0526 harbors heavily supermassive black hole that likely accreting above Eddington limit. We present observations with Atacama Large Millimeter/submillimeter Array (ALMA) in seven bands, including band 10, of brightest far-infrared (FIR) fine-structure emission lines this galaxy: [OI] 63 μm , [OIII] 88 [NII] 122 145 [CII] 158 205 [CI] 370 609 . A...
Hot Dust-Obscured Galaxies (Hot DOGs), discovered by the "W1W2 dropout" selection at high redshifts ($z\sim$ 2-4), are a rare population of hyper-luminous obscured quasars. Their number density is comparable to similarly luminous type 1 quasars in same redshift range, potentially representing short, yet critical stage galaxy evolution. The evolution their towards low redshift, however, remains unclear as function heavily biased against objects $z\lesssim2$. We combine data from WISE and...
We present spatially resolved dust-continuum ALMA observations from rest-frame $\sim$60 to $\sim$600 $\mu$m (bands 3-10) of the hyperluminous hot dust-obscured galaxy (hot DOG) WISE J224607.6-052634.9 (W2246-0526), at redshift $z=4.6$. W2246-0526 is interacting with least three companion galaxies, forming a system connected by tidal streams. model multiwavelength dust continuum using modified blackbody, which we derive properties (mass, emissivity index, area emitting region, and...
Abstract Hot dust-obscured galaxies (Hot DOGs), discovered by the “W1W2 dropout” selection at high redshifts ( z ∼ 2–4), are a rare population of hyperluminous obscured quasars. Their number density is comparable to similarly luminous type 1 quasars in same redshift range, potentially representing short, yet critical stage galaxy evolution. The evolution their toward low redshift, however, remains unclear as function heavily biased against objects ≲ 2. We combine data from Wide-field...
Abstract The properties of host galaxies associated with fast radio bursts (FRBs) provide critical information for inferring the progenitors and radiation mechanisms these bursts. We report on galaxy repeating FRB 20190520B, a dwarf at spectroscopic redshift z = 0.241 stellar mass (6.2 ± 0.8) × 10 8 M ⊙ . emission-line ratios suggest that ionized gas is powered by star formation. total H α -traced formation rate (SFR) 0.70 0.01 yr −1 , metallicity <mml:math...
We report on the optical spectroscopic observations of host galaxy hyperactive repeating fast radio burst, FRB 20240114A. The is a dwarf at redshift $z=0.1306\pm0.0002$. With rest-frame coverage 4300-7900 \AA, we have detected H$\rm{\alpha}$, H$\rm{\beta}$, [O III]$\lambda\lambda$4959,5007, [N II]$\lambda\lambda$6548,6583, and [S II]$\lambda$6716 emission lines. line ratios suggest that ionization in dominated by star formation. formation rate (SFR) derived from H$\rm{\alpha}$ $(0.06 \pm...
We present spatially resolved dust-continuum ALMA observations from rest frame ∼,60 to ∼,600 upmum (bands 3--10) of the hyperluminous hot dust-obscured galaxy (hot DOG) WISE J224607.6--052634.9 (W2246--0526), at redshift z=4.6. W2246--0526 is interacting with least three companion galaxies, forming a system connected by tidal streams. model multiwavelength dust continuum using modified blackbody, which we derive properties (mass, emissivity index, area emitting region, and temperature) in...
We report on a comprehensive multi-wavelength study of the pulsars in globular cluster (GC) M5, including discovery M5G, new compact non-eclipsing "black widow" pulsar. Thanks to analysis 34 years radio data taken with FAST and Arecibo telescopes, we obtained phase-connected timing solutions for four clusters improved those other three known pulsars. These have resulted in, among things: a) much proper motions five pulsars, transverse velocities that are smaller than their respective escape...
Abstract Hot dust-obscured galaxies (Hot DOGs) are a rare population of hyperluminous infrared discovered by the Wide-field Infrared Survey Explorer mission. Despite significant obscuration active galactic nucleus (AGN) dust in these systems, pronounced broad and blueshifted emission lines often observed. Previous work has shown that eight DOGs, referred to as blue-excess DOGs (BHDs), present blue excess consistent with type 1 quasar their UV–optical spectral energy distributions (SEDs),...
Abstract We report the discovery of hyperluminous, highly obscured active galactic nuclei (AGN) WISE J190445.04+485308.9 (W1904+4853, hereafter, L bol ∼ 1.1 × 10 13 ⊙ ) at z = 0.415. Its well-sampled spectral energy distribution (SED) is dominated by infrared dust emission, though broad emission lines are detected in optical spectra. These features suggest that W1904+4853 contains an actively accreting supermassive black hole hidden its dusty cocoon, resembling observed properties hot...
Photon bunching, a feature of classical thermal fields, has been widely exploited to implement ghost imaging. Here we show that spatial photon antibunching can be experimentally observed via low-pass filtering the intensities two light beams from beamsplitter correlation system. Through suitable choice filter thresholds, minimum measured normalized anti-correlation function, i.e., dip, lower than 0.2, while its full-width-at-half-maximum much narrower corresponding positive peak. Based on...
ABSTRACT We report measurements of H i content in 11 nearby, actively star-forming, blue compact dwarf galaxies (BCDs) from 21 cm observations with the Arecibo telescope. These BCDs, selected by their red (W2[4.6 $\mu$m]−W3[12 $\mu$m]&gt;3.8 mag) and bright mid-infrared (MIR) emission (W4[22 $\mu$m]&lt;7.6 mag), have high specific star formation rates (median sSFR ∼10−7.8 yr−1), similar to redshift galaxies. was detected six sources. analyse our new detections context previous 218...
The excitation power dependence of radiative transitions in the type-II GaSb/GaAs quantum dots structure has been studied by photoluminescence (PL) at different temperatures. QDs' exhibits a strong blue-shift with increasing and peak energy (E(PL)) is proportional to third root power. With increase power, nonlinear change for both PL intensity was observed, which attributed excited state transition. thermal process activation (E(a)) electron-hole pairs powers also GaSb QDs. As increases,...
A complete accounting of nearby objects -- from the highest-mass white dwarf progenitors down to low-mass brown dwarfs is now possible, thanks an almost set trigonometric parallax determinations Gaia, ground-based surveys, and Spitzer follow-up. We create a census within Sun-centered sphere 20-pc radius check published literature decompose each binary or higher-order system into its separate components. The result volume-limited $\sim$3,600 individual star formation products useful in...
WISE J224607.6-052634.9 (W2246-0526) is a hot dust-obscured galaxy at $z$ = 4.601, and the most luminous obscured quasar known to date. W2246-0526 harbors heavily supermassive black hole that likely accreting above Eddington limit. We present observations with Atacama Large Millimeter/submillimeter Array (ALMA) in seven bands, including band 10, of brightest far-infrared (FIR) fine-structure emission lines this galaxy: [OI]$_{63\mu m}$, [OIII]$_{88\mu [NII]$_{122\mu [OI]$_{145\mu...
Hot Dust-Obscured Galaxies (Hot DOGs) are a rare population of hyper-luminous infrared galaxies discovered by the WISE mission. Despite significant obscuration AGN dust in these systems, pronounced broad and blue-shifted emission lines often observed. Previous work has shown that 8 DOGs, referred to as Blue-excess DOGs (BHDs), present blue excess consistent with type 1 quasar their UV-optical SEDs, which been originate from light obscured central engine scattered into line sight. We an...
Abstract Green Peas (GPs) and blueberry galaxies (BBs) are thought to be local analogs ( z < 0.1) of high redshift Ly α emitters. H i study these can help us understand the star formation in primordial Universe. In this Letter, we present results 21 cm 28 specific rate (sSFR ≳ 10 −8 yr −1 ) BBs at ≲ 0.05 with Five-hundred-meter Aperture Spherical radio Telescope. We report significant detection towards two BBs, namely J1026+0426 J1132+0809, discuss possible contribution from neighboring...
We report integral field spectroscopy observations with the Near-Infrared Spectrograph on board JWST targeting 60 kpc environment surrounding most luminous quasar known at $z=4.6$. detect ionized gas filaments 40 scales connecting a network of merging galaxies likely to form cluster. find regions low ionization consistent large-scale shock excitation central dust-obscured quasar, out distances nearly eight times effective stellar radius host galaxy. In nuclear region, we an outflow driven by...
Hot dust-obscured galaxies (Hot DOGs), are a family of hyper-luminous, heavily obscured quasars. A number studies have shown that these objects reside in significantly overdense regions the Universe based on identification companions at optical through far-IR wavelengths. Here we present further characterization their environments by studying surface density Lyman break galaxy (LBG) candidates vicinity three DOGs. For two them, WISE J041010.60-091305.2 z=3.631 and J083153.25+014010.8...