Results 41 to 50 of about 6,274 (132)
The Astrophysical JournalOur survey of the fourth Fermi Large Area Telescope catalog (4FGL) unassociated gamma-ray source regions using the X-Ray Telescope (XRT) and Ultraviolet/Optical Telescope (UVOT) on board the Neil Gehrels Swift Observatory (Swift) provides new XRT and ...
Kyle D. Neumann +7 more
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The Astrophysical JournalIn 21 cm experimental cosmology, accurate characterization of a radio telescope’s antenna beam response is essential to measure the 21 cm signal. Computational electromagnetic (CEM) simulations estimate the antenna beam pattern and frequency response by ...
Joshua J. Hibbard +3 more
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Dynamics of AGN feedback in the X-ray bright eastern and southwestern “arms” of M87, mapped by XRISM
Astronomy & AstrophysicsContext. Feedback from active galactic nuclei (AGN) plays a critical role in regulating gas cooling and star formation in massive galaxies and at the centers of galaxy clusters.
Simionescu A. +26 more
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The Astrophysical JournalLoop-aligned hydrodynamic modelings help better understand the thermodynamic evolution of flaring plasma confined in solar flare loops. Conventional loop modelings typically assume a uniform loop cross section. With a variation of the cross section taken
Yu Dai +4 more
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Using sunRunner3D to interpret the global structure of the heliosphere from in situ measurements
Journal of Space Weather and Space ClimateUnderstanding the large-scale three-dimensional structure of the inner heliosphere, while important in its own right, is crucial for space weather applications, such as forecasting the time of arrival and propagation of coronal mass ejections (CMEs ...
González-Avilés José Juan +4 more
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PGC 44685: A Dwarf Star-forming Lenticular Galaxy with a Wolf–Rayet Population
The Astrophysical JournalLenticular galaxies (S0s) are formed mainly from the gas stripping of spirals in the cluster. But how S0s form and evolve in the field is still in need of being resolved.
Shiying Lu +10 more
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A Successful Sheared-arcade Eruption Triggered by a Failed Erupted Small Filament
The Astrophysical JournalIn this work, we analyze a successful eruption, accompanied by an X5.4-class flare in active region 11429. The eruptive structure is an elongated hot structure, with two curved brightenings below it.
Wentai Fu +5 more
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Abundant Molecular Gas in the Central Region of Lenticular Galaxy PGC 39535
The Astrophysical JournalLenticular galaxies (S0s) in the local Universe are generally absent of recent star formation and lack molecular gas. In this paper, we investigate one massive ( M _* ∼ 5 × 10 ^10 M _⊙ ) star-forming S0, PGC 39535, with the Northern Extended Millimeter ...
Jiantong Cui +5 more
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Revisiting Evershed Flows with CHASE Spectroscopic Observations
The Astrophysical JournalThe Evershed flow (EF), since its discovery in 1909, represents a longstanding issue in solar physics, with its three-dimensional velocity fields and underlying physical mechanisms still not fully understood.
Yue Wang +5 more
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A Comptonized Fireball Bubble Fits the Second Extragalactic Magnetar Giant Flare GRB 231115A
The Astrophysical Journal LettersMagnetar giant flares (MGFs), originating from noncatastrophic magnetars, share noteworthy similarities with some short gamma-ray bursts (GRBs). However, understanding their detailed origin and radiation mechanisms remains challenging due to limited ...
Yi-Han Iris Yin +6 more
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