Results 81 to 90 of about 7,116 (192)
Large-scale Effect of an Accretion Burst in the High-Mass Young Stellar Object G358.93-0.03-MM1
The Astronomical JournalThe high-mass young stellar object G358.93-0.03-MM1 underwent a rapid accretion burst event from 2019 January to June, resulting in flares observed in most class II methanol maser transitions starting in mid-January.
Dan Miao +5 more
doaj +1 more source
Risk Analysis, Volume 45, Issue 11, Page 3519-3532, November 2025.ABSTRACT Decisions about how to respond to coastal flood hazards often involve disagreements over resource allocations. In the United States, large intergovernmental fiscal transfers have enabled rebuilding in areas that experience severe repetitive losses. This case study focuses on Ortley Beach, a barrier island neighborhood in Toms River, New Jersey,
Laura Geronimo +4 more
wiley +1 more source
SiO v = 1 J = 5 → 4 Maser Emission from the Root of the “Water Fountain” Source W 43A
The Astrophysical JournalWe report here the first mapping of SiO v = 1 J = 5 → 4 maser emission toward the “water fountain” source W 43A in order to explore the central stellar system driving the collimated, bipolar, fast jet.
Hiroshi Imai +5 more
doaj +1 more source
The Megamaser Cosmology Project: IV. A Direct Measurement of the Hubble Constant from UGC 3789
, 2013 In Papers I and II from the Megamaser Cosmology Project (MCP), we reported initial observations of water masers in an accretion disk of a supermassive black hole at the center of the galaxy UGC 3789, which gave an angular-diameter distance to the galaxy ...
Argon +20 more
core +1 more source
Ecology, Volume 106, Issue 10, October 2025.Abstract Spatial resource heterogeneity (SRH; the variable spatial distribution of resources) is a surprisingly understudied component of oscillatory predator–prey dynamics. SRH may be particularly important in large, ecologically realistic networks where different patterns of resource distribution can manifest, which have important implications for ...
Clara A. Woodie, Kurt E. Anderson
wiley +1 more source
The Discovery of Polarized Water Vapor Megamaser Emission in a Molecular Accretion Disk
The Astrophysical Journal LettersFor the first time in an extragalactic source, we detect linearly polarized H _2 O maser emission associated with the molecular accretion disk of NGC 1068.
Jack F. Gallimore +5 more
doaj +1 more source
, 2005 We have conducted phase-reference multi-epoch observations of the 22.2 GHz water masers using the VLBA and multi-frequency study of the continuum emission using the VLA towards the high-mass SFR AFGL 5142.
Bonnell +23 more
core +1 more source
Long-term Variability of H$_2$CO Masers in Star-forming Regions [PDF]
, 2017 We present results of a multi-epoch monitoring program on variability of 6$\,$cm formaldehyde (H$_2$CO) masers in the massive star forming region NGC$\,$7538$\,$IRS$\,$1 from 2008 to 2015 conducted with the GBT, WSRT, and VLA.
Andreev, N. +7 more
core +2 more sources
AKR Observations From All Local Times Indicate Substorm Activity
Journal of Geophysical Research: Space Physics, Volume 130, Issue 9, September 2025.Abstract Auroral Kilometric Radiation (AKR) is known to present emission at lower frequencies near substorm onset, corresponding to activation of higher altitude sources along auroral magnetic field lines and acting as a proxy of the vertical distribution of acceleration processes during these events.
J. E. Waters +6 more
wiley +1 more source
CMZoom. IV. Incipient High-mass Star Formation throughout the Central Molecular Zone
The Astrophysical JournalIn this work, we constrain the star-forming properties of all possible sites of incipient high-mass star formation in the Milky Way’s Galactic Center.
H Perry Hatchfield +17 more
doaj +1 more source