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Academic Articles & Research Papers
Showing 20 of 23,220 academic articles
Jeremiah D. Paul, Richard M. Plotkin • The Astrophysical Journal
(2026)
The origin of core radio emission in radio-quiet active galactic nuclei (AGNs) is still actively debated. General-relativistic magnetohydrodynamics simulations often predict the launching of moderately large-scale jets from super-Eddington ...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ae36a6
Xulun Ye, Jieyu Zhao, Yu Chen • Entropy
(2018)
Multi-manifold clustering is among the most fundamental tasks in signal processing and machine learning. Although the existing multi-manifold clustering methods are quite powerful, learning the cluster number automatically from data is stil...
DOAJ
Open Access (DOAJ)
DOI: 10.3390/e20110830
Zhichen Jing, Ying Li, Dechao Song, Qiao Li et al. • The Astrophysical Journal
(2026)
We present observations of an X1.2 white-light flare on 2023 January 6, which exhibits a rare quadrupolar white-light source configuration. This event was observed by the White-light Solar Telescope (WST; 3600 Å) onboard the Advanced Space-...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ae9161
Aldo G. Sepulveda, Daniel Huber, Timothy R. Bedding, Daniel R. Hey et al. • The Astronomical Journal
(2024)
HIP 65426 hosts a young giant planet that has become the first exoplanet directly imaged with JWST. Using time-series photometry from the Transiting Exoplanet Survey Satellite (TESS), we classify HIP 65426 as a high-frequency δ Scuti pulsat...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-3881/ad4964
Ze-Nan Liu, Wei-Yang Wang, Yu-Chen Huang, Zi-Gao Dai • The Astrophysical Journal
(2025)
Fast radio bursts (FRBs) are millisecond-duration extragalactic transients characterized by ultrahigh brightness temperatures, suggesting coherent emission mechanisms in extreme astrophysical processes. In this paper, we extend the bunched ...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/adea76
T. Morishita, M. Stiavelli • The Astrophysical Journal Letters
(2023)
This paper highlights initial photometric analyses of JWST NIRCam imaging data in the sightline of SMACS0723, aiming to identify galaxies at redshift z > 7. By applying a conservative Lyman-break selection followed by photometric-redshift a...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/2041-8213/acbf50
Bodie Breza, Matthew C. Nixon, Eliza M.-R. Kempton • The Astrophysical Journal Letters
(2025)
The evolution and structure of sub-Neptunes may be strongly influenced by interactions between the outer gaseous envelope of the planet and a surface magma ocean. However, given the wide variety of permissible interior structures of these p...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/2041-8213/ae0c07
Yanpeng Zhang, Wenjie Dong, Jing Zhang, Qun Ding • Entropy
(2023)
Most existing chaotic systems have many drawbacks in engineering applications, such as the discontinuous range of chaotic parameters, weak chaotic properties, uneven chaotic sequence outputs, and dynamic degradation. Therefore, based on the...
DOAJ
Open Access (DOAJ)
DOI: 10.3390/e25071005
Yasufumi Kojima • The Astrophysical Journal
(2024)
Magnetar outbursts are powered by an intense magnetic field. The phenomenon has recently drawn significant attention because of a connection to some fast radio bursts that has been reported. Understanding magnetar outbursts may provide the ...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ad7382
Sumi Kim, Ena Choi, Amanda C. N. Quirk, Rachel S. Somerville et al. • The Astrophysical Journal
(2025)
We investigate the influence of supernova (SN) feedback on the satellites of elliptical host galaxies using hydrodynamic simulations. Utilizing a modified version of the GADGET-3 code, we perform cosmological zoom-in simulations of 11 ellip...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/adec96
Niu Su, Er-Liang Cui, Yi-Wei Jiang, Hua-Xing Chen • European Physical Journal C: Particles and Fields
(2026)
Abstract Confirming the existence of hybrid states remains challenging due to their experimental indistinguishability from tightly bound tetraquarks and loosely bound molecules. To address this issue, we employ QCD sum rules to systematical...
DOAJ
Open Access (DOAJ)
DOI: 10.1140/epjc/s10052-026-15939-y
Lachlan Passenger, Shun Yin Cheung, Nir Guttman, Nikhil Kannachel et al. • The Astrophysical Journal
(2025)
Gravitational-wave astronomy provides a promising avenue for the discovery of new physics beyond general relativity as it probes extreme curvature and ultrarelativistic dynamics. However, in the absence of a compelling alternative to genera...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ae13b0
Tatiana M. Rodríguez, Emmanuel Momjian, Peter Hofner, Anuj P. Sarma et al. • The Astrophysical Journal
(2024)
We present Very Large Array 1.3 cm continuum and 22.2 GHz H _2 O maser observations of the high-mass protostellar object IRAS 19035+0641 A. Our observations unveil an elongated bipolar 1.3 cm continuum structure at scales ≲500 au, which, to...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ad182f
Daisuke Yoshida, Tomoyuki Horikiri • Communications Physics
(2024)
Abstract Quantum repeaters are pivotal in the physical layer of the quantum internet, and quantum repeaters capable of efficient entanglement distribution are necessary for its development. Quantum repeater schemes based on single-photon in...
DOAJ
Open Access (DOAJ)
DOI: 10.1038/s42005-024-01849-6
Harmanec P., Yang S., Šlechta M., Grundstrom E. D. et al. • Astronomy & Astrophysics
(2026)
Analysis of radial velocities of two narrow absorption components in the Mg II 4481 Å line demonstrated that the secondary of the Be star o Cas is indeed a close binary system composed of two B7 stars orbiting each other with a period of
...
DOAJ
Open Access (DOAJ)
DOI: 10.1051/0004-6361/202659678
Meni-Gallardo P., Orell-Miquel J., Fernández-Rodríguez G., Parviainen H. et al. • Astronomy & Astrophysics
(2026)
Since the discovery of the first exoplanet, significant efforts have been made to characterise their atmospheres. Ultra-hot Jupiters (UHJs) are of particular interest due to their extended and hot atmospheres. Although previous studies have...
DOAJ
Open Access (DOAJ)
DOI: 10.1051/0004-6361/202557881
Ya-Ping Xie, V. P. Gonçalves • European Physical Journal C: Particles and Fields
(2024)
Abstract Information about the three-dimensional description of the quark and gluon content of hadrons, described by the generalized parton distributions (GPDs), can be probed by exclusive processes in electron–proton (ep) collisions. In th...
DOAJ
Open Access (DOAJ)
DOI: 10.1140/epjc/s10052-024-13296-2
Chinmay S. Kulkarni, Thomas Behling, Elisabeth E. Banks, Jason Jones et al. • The Astrophysical Journal
(2026)
Infrared observations can probe photometric variability across the full evolutionary range of young stellar objects (YSOs), from deeply embedded protostars to pre-main-sequence stars with dusty disks. We present 3–8 μ m light curves extendi...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ae3156
Cano-González M., Schödel R., Alberdi A., Najarro F. et al. • Astronomy & Astrophysics
(2026)
Context. The Arches cluster, located in the Galactic Centre (GC) is one of the best astrophysical laboratories to study the properties of massive stars and young massive clusters (YMCs). However, despite having been observed for decades at ...
DOAJ
Open Access (DOAJ)
DOI: 10.1051/0004-6361/202660846
N. Dimakis, Alex Giacomini, Andronikos Paliathanasis • European Physical Journal C: Particles and Fields
(2017)
Abstract For a family of Horndeski theories, formulated in terms of a generalized Galileon model, we study the integrability of the field equations in a Friedmann–Lemaître–Robertson–Walker space-time. We are interested in point transformati...
DOAJ
Open Access (DOAJ)
DOI: 10.1140/epjc/s10052-017-5029-9