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Academic Articles & Research Papers
Showing 20 of 151 academic articles
S.K. Verma, A. Thirumurugan, P.K. Panda, P. Patel et al. • Materials Today Bio
(2021)
Recent advancement in nanotechnology seeks exploration of new techniques for improvement in the molecular, chemical, and biological properties of nanoparticles. In this study, carbon modification of octahedral-shaped magnetic nanoparticles ...
DOAJ
Open Access (DOAJ)
DOI: 10.1016/j.mtbio.2021.100131
Lifeng Dong, Alex Henderson, Christopher Field • Journal of Nanotechnology
(2012)
We investigated the antibacterial activity of single-walled carbon nanotubes (SWCNTs) dispersed in surfactant solutions of sodium cholate, sodium dodecylbenzene sulfonate, and sodium dodecyl sulfate. Among the three surfactants, sodium chol...
DOAJ
Open Access (DOAJ)
DOI: 10.1155/2012/928924
• Choice Reviews Online
(1997)
When we think of archaeology, most of us think first of its many spectacular finds: the legendary city of Troy, Tutankhamun's golden tomb, the three-million-year-old footprints at Laetoli, the mile-high city at Machu Picchu, the cave painti...
OPENALEX
DOI: https://doi.org/10.5860/choice.34-6037
Ricardo Fernando Moyano Vasconcellos, Martín Gustavo Díaz • Estudios Atacameños
(2015)
Se presentan los aspectos sociales vinculados al concepto de frontera, el ushnu y la observación lunar en el sitio inca de La Ciudacita, provincia de Tucumán, noroeste de Argentina. El análisis se centra en la posibilidad de observar el lun...
DOAJ
Open Access (DOAJ)
Richard G. Arendt, F. Yusef-Zadeh, I. Heywood • The Astrophysical Journal Supplement Series
(2025)
We present a catalog of 1.28 GHz radio filaments observed by MeerKAT over the innermost 200 pc of the Galaxy (roughly ±1 $\mathop{.}\limits^{\unicode{x000b0}}$ 5), which includes the central molecular zone. The catalog is generated by repur...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4365/ae1296
Sebastián Castillo-Carrión, Alberto Javier Castro-Tirado • Advances in Astronomy
(2010)
We present a standalone software tool which makes reports for
analysis and evaluation of GRBs. Recently, analysis and evaluation of GRBs were done without help of semiautomated tools or routines; so the time elapsed from the detection until...
DOAJ
Open Access (DOAJ)
DOI: 10.1155/2010/102831
C. J. Harris, Kayhan Gültekin, Laura Blecha • The Astrophysical Journal
(2026)
We present a multimessenger investigation of supermassive black hole binary (SBHB) hardening by jointly comparing models to the observed stellar mass deficits of nearby core galaxies and to nanohertz gravitational-wave background measuremen...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ae9767
Erica Behrens, Jeffrey G. Mangum, Mathilde Bouvier, Cosima Eibensteiner et al. • The Astrophysical Journal
(2026)
We quantify the utility of HCN and HNC to characterize gas conditions in the nearby starburst galaxy NGC 253. We use measurements from the Atacama Large Millimeter/Submillimeter Array (ALMA) Large Program ALCHEMI: the ALMA Comprehensive Hig...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ae3567
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
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
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
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
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
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
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