Results 61 to 70 of about 36,409 (218)

Interactions between the Jet and Disk Wind in Nearby Radio-intermediate Quasar III Zw 2

The Astrophysical Journal, 2023
Disk winds and jets are ubiquitous in active galactic nuclei (AGN), and how these two components interact remains an open question. We study the radio properties of the radio-intermediate quasar III Zw 2.
Ailing Wang, Tao An, Shaoguang Guo, Prashanth Mohan, Wara Chamani, Willem A. Baan, Talvikki Hovatta, Heino Falcke, Tim J. Galvin, Natasha Hurley-Walker, Sumit Jaiswal, Anne Lahteenmaki, Baoqiang Lao, Weijia Lv, Merja Tornikoski, Yingkang Zhang   +15 more
doaj   +1 more source

Scintillation Properties of PSR B1133+16 Measured with Very Long Baseline Interferometry

The Astrophysical Journal
The scintillation of pulsars reveals the small-scale structure of the interstellar medium. A powerful technique for characterizing the scintillating structures (screens) combines analysis of scintillation arcs and very long baseline interferometry (VLBI).
Ashley M. Stock, Fardin Syed, Marten H. van Kerkwijk, Rebecca Lin, Franz Kirsten, Ue-Li Pen   +5 more
doaj   +1 more source

Masses of Nearby Supermassive Black Holes with Very-Long Baseline Interferometry

, 2011
Dynamical mass measurements to date have allowed determinations of the mass M and the distance D of a number of nearby supermassive black holes. In the case of Sgr A*, these measurements are limited by a strong correlation between the mass and distance ...
Agol, Bendo, Bower, Broderick, Broderick, Broderick, Daniel P. Marrone, Dexter, Dimitrios Psaltis, Doeleman, Doeleman, Dolence, Eisenhauer, Falcke, Falcke, Feryal Özel, Fish, Fish, Ghez, Gillessen, Gültekin, Ho, Johannsen, Kardashev, Laor, Lee, Leeuw, Mościbrodzka, Pellegrini, Shcherbakov, Sheperd S. Doeleman, Stefan Gillessen, Takahashi, Tim Johannsen, Viergutz, Vincent L. Fish, Yuan, Özel   +37 more
core   +1 more source

Search for Compact Extragalactic Radio Sources Near Massive Star Forming Regions [PDF]

, 2006
We have used the Very Large Array to search for compact milliarcsecond-size radio sources near methanol masers in high-mass star-forming regions. Such sources are required for Very Long Baseline Interferometry phase-referencing observations. We conducted
K. M. Menten, M. J. Reid, X. W. Zheng, Y. Xu, Zhang J. S.   +4 more
core   +2 more sources

CTRIP‐HyDAS: A Global‐Scale Data Assimilation Framework for SWOT‐Derived Discharge Using Synthetic Observations at High Resolution (1/12°)

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract The integration of satellite‐based observations into hydrological models offers transformation potential for improving discharge predictions globally, especially in regions lacking in situ measurements. This study presents CTRIP‐HyDAS, a global‐scale hydrological data assimilation framework that merges SWOT‐derived discharge observations with ...
Kaushlendra Verma, Simon Munier, Aaron Boone, Patrick Le Moigne   +3 more
wiley   +1 more source

Very long baseline interferometry [PDF]

S-band stations with dual tracking capability have been used to gather double differential very long baseline interferometry data on Apollo 16 and Apollo 17.
Salzberg, I. M.
core   +1 more source

The importin‐alpha superfamily engages in ethylene signaling by shuttling ETHYLENE INSENSITIVE 2 from the endoplasmic reticulum to the nucleus

The FEBS Journal, Volume 293, Issue 3, Page 894-917, February 2026.
The plant hormone ethylene regulates plant growth, ripening, senescence, and stress responses. The hormonal signal transmission, from receptors at the ER membrane to the transcriptional regulators in the nucleus, is still not completely understood.
Fabian Wynen, Jan Eric Maika, Raphael Josef Eberle, Nina Jahnke, Marcel Wiermer, Laura Hartmann, Rüdiger Simon, Georg Groth   +7 more
wiley   +1 more source

Stellar radii from long-baseline interferometry [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractLong baseline interferometers now measure the angular diameters of nearby stars with sub-percent accuracy. They can be translated in photospheric radii when the parallax is known, thus creating a novel and powerful constraint for stellar models. I present applications of interferometric radius measurements to the modeling of main sequence stars.
openaire   +2 more sources

Practical approach to extending baselines of telescopes using continuous-variable quantum information

New Journal of Physics
Interferometric telescopes are instrumental for the imaging of distant astronomical bodies, but optical loss heavily restricts how far telescopes in an array can be placed from one another, leading to a bottleneck in the resolution that can be achieved ...
Bran Purvis, Randy Lafler, R Nicholas Lanning   +2 more
doaj   +1 more source

Radiowave scattering and ultra-long-baseline interferometry [PDF]

Interstellar scattering can irretrievably blur the images of compact radio sources when examined with extremely high resolution. Because of this effect, diffraction limited observations of extragalactic sources with an Earth-Moon baseline will only be ...
Dennison, Brian
core   +1 more source