Results 111 to 120 of about 2,078,750 (288)

Science with the AstroSat Soft X-ray telescope: An overview [PDF]

open access: green, 2021
Sudip Bhattacharyya   +8 more
openalex   +1 more source

Alternative Approaches for Estimating Highest‐Density Regions

open access: yesInternational Statistical Review, EarlyView.
Summary Among the variety of statistical intervals, highest‐density regions (HDRs) stand out for their ability to effectively summarise a distribution or sample, unveiling its distinctive and salient features. An HDR represents the minimum size set that satisfies a certain probability coverage, and current methods for their computation require ...
Nina Deliu, Brunero Liseo
wiley   +1 more source

Survival of the Accretion Disk in LMC Recurrent Nova 1968-12a: UV–X-Ray Case Study of the 2024 Eruption

open access: yesThe Astrophysical Journal
We report on UV and X-ray observations of the 2024 eruption of the recurrent nova LMCN 1968-12a, a rapidly recurring extragalactic system with a ∼4.3 yr recurrence period and a massive white dwarf. The eruption was discovered on 2024 August 1.8 by Swift,
Judhajeet Basu   +5 more
doaj   +1 more source

Selective vignetting of Type 1 X-ray telescopes [PDF]

open access: yes, 1969
Selective vignetting technique optimizes the performance of a Type 1 X-ray telescope. The image quality of the telescope system is improved by matching the detector to the optimum focal surface and by vignetting rays which formerly contributed to the ...
Mangus, J.
core   +1 more source

The Ysz--Yx Scaling Relation as Determined from Planck and Chandra

open access: yes, 2012
SZ clusters surveys like Planck, the South Pole Telescope, and the Atacama Cosmology Telescope, will soon be publishing several hundred SZ-selected systems. The key ingredient required to transport the mass calibration from current X-ray selected cluster
More, Surhud   +2 more
core   +1 more source

JAXA curation for Bennu samples returned by the NASA's OSIRIS‐REx mission

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract NASA's OSIRIS‐REx mission successfully collected and returned ~121.6 g of bulk samples from the B‐type, near‐Earth asteroid (101955) Bennu to Earth in September 2023. Upon returning to Earth, the samples were transported to the NASA Johnson Space Center where most of the samples have been stored and processed.
Rui Tahara   +34 more
wiley   +1 more source

Constraints on the X-Ray and Very-high-energy Gamma-Ray Flux from Supernova Remnant W44

open access: yesThe Astrophysical Journal
Observations of GeV gamma-ray emission from the well-studied mixed-morphology supernova remnant (SNR) W44 by Fermi-Large Area Telescope and AGILE imply that it is a site of significant cosmic-ray acceleration.
A. Archer   +57 more
doaj   +1 more source

New hard X-ray sources discovered in the ongoing INTEGRAL Galactic Plane survey after 14 years of observations

open access: yes, 2017
The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) continues to successfully work in orbit after its launch in 2002. The mission provides the deepest ever survey of hard X-ray sources throughout the Galaxy at energies above 20 keV.
Krivonos, Roman   +5 more
core   +1 more source

Xylem Pit Anatomy and Minimum Leaf Conductance Drive Drought Mortality in Pinus pinaster

open access: yesPlant, Cell &Environment, EarlyView.
ABSTRACT Drought‐triggered forest die‐off events are commonly attributed to hydraulic failure, carbon starvation, or a combination of the two. Nevertheless, the anatomical and physiological traits that make trees vulnerable to drought in the field are often unknown, hindering predictive efforts.
J. Julio Camarero   +10 more
wiley   +1 more source

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