Results 21 to 30 of about 148,253 (282)

The dynamic universe: realizing the potential of classical time domain and multimessenger astrophysics

open access: yesFrontiers in Astronomy and Space Sciences
In parallel with the multi-messenger revolution, major advances in time-domain astronomy across multiple science disciplines relevant to astrophysics are becoming more urgent to address.
Steve B. Howell   +6 more
doaj   +3 more sources

The role of magnetar transient activity in time-domain and multimessenger astronomy

open access: yesFrontiers in Astronomy and Space Sciences
Time-domain and multimessenger astronomy (TDAMM) involves the study of transient and time-variable phenomena across various wavelengths and messengers.
Michela Negro   +7 more
doaj   +3 more sources

Image Preprocessing Framework for Time-domain Astronomy in the Artificial Intelligence Era

open access: yesThe Astronomical Journal
The rapid advancement of image analysis methods in time-domain astronomy, particularly those leveraging artificial intelligence (AI) algorithms, has highlighted efficient image preprocessing as a critical bottleneck affecting algorithm performance. Image
Liang Cao   +5 more
doaj   +3 more sources

Coherent Time-domain Canceling of Interference for Radio Astronomy

open access: yesPublications of the Astronomical Society of the Pacific, 2022
Abstract Radio astronomy is vulnerable to interference from a variety of anthropogenic sources. Among the many strategies for mitigation of this interference is coherent time-domain canceling (CTC), which ideally allows one to “look through” interference, as opposed to avoiding the interference or deleting the afflicted data.
S. W. Ellingson, R. M. Buehrer
openaire   +2 more sources

Time domain astronomy from Dome C: results from ASTEP [PDF]

open access: yesProceedings of the International Astronomical Union, 2012
AbstractASTEP (Antarctic Search for Transiting Exo Planets) is a research program funded mainly by French ANR grants and by the French Polar Institute (IPEV), dedicated to the photometric study of exoplanetary transits from Antarctica.The preliminary “pathfinder” instrument ASTEP–South is described in another communication (Crouzet et al., these ...
Rivet, J   +19 more
openaire   +2 more sources

AT 2023clx: The Faintest and Closest Optical Tidal Disruption Event Discovered in Nearby Star-forming Galaxy NGC 3799

open access: yesThe Astrophysical Journal Letters, 2023
We report the discovery of a faint optical tidal disruption event (TDE) in the nearby star-forming galaxy NGC 3799. Identification of the TDE is based on its position at the galaxy nucleus, a light curve declining as t ^−5/3 , a blue continuum with an ...
Jiazheng Zhu   +6 more
doaj   +1 more source

Implementation of a Direct-Imaging and FX Correlator for the BEST-2 Array [PDF]

open access: yes, 2014
A new digital backend has been developed for the BEST-2 array at Radiotelescopi di Medicina, INAF-IRA, Italy which allows concurrent operation of an FX correlator, and a direct-imaging correlator and beamformer.
Adami, Kristian Zarb   +4 more
core   +3 more sources

Big Universe, Big Data: Machine Learning and Image Analysis for Astronomy [PDF]

open access: yes, 2017
Astrophysics and cosmology are rich with data. The advent of wide-area digital cameras on large aperture telescopes has led to ever more ambitious surveys of the sky.
Gieseke, Fabian   +4 more
core   +2 more sources

Time domain astronomy with Swift and Fermi

open access: yesRwanda Journal, 2016
Swift and Fermi are unveiling an unexpectedly rich tapestry of behavior in the transient γ−ray sky. Sources which were already known to be transient − such as pulsars, gamma-ray bursts, and blazars − have been studied in ever-increasing detail. For example, Fermi/LAT has detected 117 pulsars of which 56 are new.
Gehrels, N, Cannizzo, J.K.
openaire   +3 more sources

GECAM Localization of High-energy Transients and the Systematic Error

open access: yesThe Astrophysical Journal Supplement Series, 2023
The Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a pair of microsatellites (i.e., GECAM-A and GECAM-B) dedicated to monitoring gamma-ray transients including the high-energy electromagnetic counterparts of ...
Yi Zhao   +65 more
doaj   +1 more source

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