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141
Exponential Self-Organization and Moore’s Law: Measures and Mechanisms
Published 2017-01-01“…Examples are the formation of elementary particles from pure energy, the formation of atoms from particles, the formation of stars and galaxies, and the formation of molecules from atoms, of organisms, and of the society. …”
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142
Inner radius and energy conditions of dark matter halos surrounding Schwarzschild black holes
Published 2025-03-01“…We study a class of analytic models for a dark matter halo surrounding a Schwarzschild black hole sitting at the center of a galaxy, with a variable inner radius rin at which the density profile of the dark matter halo vanishes. …”
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143
Photometric Selection of Type 1 Quasars in the XMM-LSS Field with Machine Learning and the Disk–Corona Connection
Published 2025-01-01“…We constructed our training and blind-test samples using spectroscopically identified Sloan Digital Sky Survey quasars, galaxies, and stars. We utilized the XGBoost machine learning method to select a total of 1591 quasars. …”
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144
Scheduling in Targeted Transient Surveys and a New Telescope for CHASE
Published 2010-01-01“…In particular, we present example schedules designed for a future 50 cm telescope that will expand the capabilities of the CHASE survey, which aims to detect young supernova events in nearby galaxies. We also include a brief description of the telescope and the status of the project, which is expected to enter a commissioning phase in 2010.…”
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145
Reverberation Evidence for Stream Collision and Delayed Disk Formation in Tidal Disruption Events
Published 2025-01-01Get full text
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146
The Sunburst Arc with JWST. III. An Abundance of Direct Chemical Abundances
Published 2025-01-01“…With these temperature and density measurements, we measure gas-phase abundances with similar rigor as studies of local galaxies and H ii regions. We measure a gas-phase metallicity for the LCE of $12+\mathrm{log}({\rm{O}}/{\rm{H}})=7.97\pm 0.05$ , and find an enhanced nitrogen abundance $\mathrm{log}({\rm{N}}/{\rm{O}})=-0.6{5}_{-0.25}^{+0.16}$ . …”
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147
Nonthermal Signatures of Radiative Supernova Remnants. II. The Impact of Cosmic Rays and Magnetic Fields
Published 2025-01-01“…Understanding SNR evolution at this stage is crucial for estimating feedback in galaxies, as SNRs are expected to release energy and momentum into the interstellar medium near the ends of their lives. …”
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148
Pre-trained artificial intelligence-aided analysis of nanoparticles using the segment anything model
Published 2025-01-01“…Examples can be found in systems as diverse as galaxies, alloys, living tissues, cells, and even nanoparticles. …”
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149
What Rogue Hydrogen Clouds Tell Us about Galactic Magnetic Fields
Published 2025-01-01“…Observations of the Milky Way and external galaxies support the idea that large-scale magnetic fields are concentrated in galactic disks, with halo magnetic fields at least an order of magnitude weaker. …”
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150
Tracking Outflow Using Line Locking (TOLL). II. Large Line-locking Web Identified in Quasar J151352+085555
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151
Looking at Infrared Background Radiation Anisotropies with Spitzer: Large-scale Anisotropies and Their Implications
Published 2025-01-01“…The power spectrum of the resultant CIB anisotropies is measured from the data to >1°, revealing the component well above that from remaining known galaxies on scales $\gt 1^{\prime} \rm{}\,\rm{}\,$ . …”
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152
First Results from the JWST Early Release Science Program Q3D: The Fast Outflow in a Red Quasar at z = 0.44
Published 2025-01-01“…Quasar feedback may play a key role in the evolution of massive galaxies. The dust-reddened quasar F2M110648.35+480712 at z = 0.4352 is one of the few cases at its redshift that exhibits powerful quasar feedback through bipolar outflows. …”
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153
Geometrical Distances of Extragalactic Binaries through Spectroastrometry
Published 2025-01-01“…By measuring multiple binary star systems or monitoring one binary system repeatedly, geometric distance measurements of nearby galaxies can be achieved, providing valuable insights into the Hubble tension and advancing our understanding of the Universe’s structure and evolution.…”
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154
The Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX) Active Galactic Nuclei Catalog: The Fourth Data Release
Published 2025-01-01“…A total of 4060 (39%) of the 10,499 redshift-confirmed AGN have emission-line regions 3 σ more extended than the image quality, which could be strong outflows blowing into the outskirts of the host galaxies or ionized intergalactic medium.…”
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155
Excess Ultraviolet Emission at High Galactic Latitudes: A New Horizons View
Published 2025-01-01“…The former is the first firm detection of the offset in the range 912–1100 Å while the latter result confirms previous results from the Galaxy Evolution Explorer, showing that there is little emission from the solar system from 1400 to 1800 Å. …”
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156
The JADES Transient Survey: Discovery and Classification of Supernovae in the JADES Deep Field
Published 2025-01-01“…We also found that two z ∼ 16 galaxy candidates from the first imaging epoch were actually transients that faded in the second epoch, illustrating the possibility that moderate/high-redshift SNe could mimic high-redshift dropout galaxies.…”
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157
Broad-line Region Characterization in Dozens of Active Galactic Nuclei Using Small-aperture Telescopes
Published 2025-01-01“…We present the results of a nearly decade-long photometric reverberation mapping (PRM) survey of the H α emission line in nearby (0.01 ≲ z ≲ 0.05) Seyfert galaxies using small (15–40 cm) telescopes. Broadband filters were used to trace the continuum emission, while narrowband filters tracked the H α -line signal. …”
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158
Detecting the Black Hole Candidate Population in M51’s Young Massive Star Clusters: Constraints on Accreting Intermediate-mass Black Holes
Published 2025-01-01“…Jansky Very Large Array to search for any evidence of accreting black holes in young massive star clusters in the nearby galaxy M51. We find that of 44 bright ( L _X > 10 ^38 erg s ^−1 ) X-ray point sources in M51, 24 had probable matches to objects including possible associated star clusters in the HST Legacy Extragalactic UV Survey catalog, seven of which were classified as contaminants (background galaxies or foreground stars). …”
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159
Clustering of X-Ray-Selected AGN
Published 2012-01-01“…In particular, one of the key results is that X-ray AGNs are hosted by dark matter halos of mass similar to that of galaxy groups. This result, together with model predictions, has lead to the hypothesis that galaxy mergers may constitute the main AGN-triggering mechanism. …”
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160
Testing General Relativity Using Large-scale Structure Photometric Redshift Surveys and the Cosmic Microwave Background Lensing Effect
Published 2025-01-01“…The E _G statistic provides a valuable tool for evaluating the predictions of general relativity (GR) by probing the relationship between gravitational potential and galaxy clustering on cosmological scales within the observable Universe. …”
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