Nebula
National Institutes of Health
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Context. We present a detailed view of the pulsar wind nebula (PWN) HESS J1825–137. We aim to constrain the mechanisms dominating…
The first wind nebula around a magnetar was recently discovered in X-rays around Swift~J1834.9$-$0846. We study this magnetar's…
We report the first detection of very-high-energy (VHE) gamma-ray emission above 140 GeV from PKS 1424+240, a BL Lac object with…
The abundances of elements and their isotopes in our Galaxy show wide variations, reflecting different nucleosynthetic processes…
Echelle spectrophotometry of the planetary nebula NGC 5307 is presented. The data consist of Very Large Telescope Ultraviolet…
The growth of meter-sized bodies in the solar nebula by dust accretion is examined. The meter-sized bodies have velocity about 50…
In the current paradigm, Oort cloud comets formed in the giant planets' region of the solar nebula, where temperatures and other…
The eclipsing binary pular PSR1957 + 20 is presumed to have been spun up to its present rotation period of 1.6 ms by an earlier…
Soft X-ray emission from the ring nebula NGC6888, formed by the stellar wind of the central WolfRayet star HD192163, has been…