Results 91 to 100 of about 29,884 (299)

Multimodal Data‐Driven Microstructure Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang   +4 more
wiley   +1 more source

Eight Years of Light from ASASSN-15oi: Toward Understanding the Late-time Evolution of TDEs

open access: yesThe Astrophysical Journal
We present results from an extensive follow-up campaign of the tidal disruption event (TDE) ASASSN-15oi spanning δt  ∼ 10–3000 days, offering an unprecedented window into the multiwavelength properties of a TDE during its first ≈8 yr of evolution. ASASSN-
A. Hajela   +28 more
doaj   +1 more source

The PRIMA Thesaurus for Materials Science and Engineering

open access: yesAdvanced Engineering Materials, EarlyView.
The PRIMA Thesaurus is a structured vocabulary designed to improve how materials science data is described and shared. Developed with input from multiple experts, it enables clear documentation of research workflows, data exchange, and reuse across platforms.
Rossella Aversa   +8 more
wiley   +1 more source

Three transient X-ray sources during the INTEGRAL revolution 1710 [PDF]

open access: yes, 2016
During recent INTEGRAL observations of the Musca and Norma regions (revolutions 1710) performed between 2016-08-05 16:00:36 UTC and 2016-08-07 21:02:14 UTC a renewed activity from the following transient X-ray sources has been detected: 1) IGR J17091 ...
Charles, Phil   +5 more
core  

X-ray variability in a complete sample of Soft X-ray selected AGN [PDF]

open access: yes, 2001
We present ROSAT All-Sky Survey and ROSAT pointed observations (PSPC and HRI) of a complete sample of 113 bright soft X-ray AGN selected from the ROSAT Bright Source Catalog.
H.-C. Thomas   +5 more
core   +1 more source

Dinosaur in a Haystack: X-Ray View of the Entrails of SN 2023ixf and the Radio Afterglow of Its Interaction with the Medium Spawned by the Progenitor Star (Paper I)

open access: yesThe Astrophysical Journal
We present the results from our extensive hard-to-soft X-ray (NuSTAR, Swift-XRT, XMM-Newton, Chandra) and meter-to-millimeter-wave radio (Giant Metrewave Radio Telescope, Very Large Array, NOEMA) monitoring campaign of the very nearby ( d  = 6.9 Mpc ...
Nayana A. J.   +26 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

STATE TRANSITIONS IN BRIGHT GALACTIC X-RAY BINARIES: LUMINOSITIES SPAN BY TWO ORDERS OF MAGNITUDE [PDF]

open access: yes, 2009
Using X-ray monitoring observations with the All-Sky Monitor on board the Rossi X-Ray Timing Explorer and the Burst Alert Telescope on board the Swift, we are able to study the spectral state transitions occurred in about 20 bright persistent and ...
Yu, Wenfei, Yan, Zhen
core   +1 more source

Supergiant Fast X-ray Transients as transient sources in High Mass X-ray Binaries

open access: yes, 2011
Supergiant Fast X-ray Transients (SFXTs) represent the most extreme case of X-ray variability in High Mass X-ray Binaries hosting blue supergiant companions. Mainly discovered thanks to the INTEGRAL monitoring of the Galactic plane, these hard X-ray transients display dynamic ranges which can span five orders of magnitude. This intensity variability is
openaire   +2 more sources

Spectrophotometry of the transient X-ray source A0620-00

open access: yesThe Astrophysical Journal, 1977
Optical observations of the transient X-ray source A0620-00 over the wavelength range from about 3200 to 6600 A are analyzed which were made with the 5-m Hale telescope using a multichannel spectrometer, a digital spectrograph with a cooled integrating SIT vidicon, and an image photon-counting system attached to the camera of the coude spectrograph ...
J. B. Oke, J. L. Greenstein
openaire   +1 more source

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