Results 71 to 80 of about 50,898 (280)
The Ever Changing Circumstellar Nebula Around UW Centauri [PDF]
, 1999 We present new images of the reflection nebula surrounding the R Coronae Borealis Star, UW Cen. This nebula, first detected in 1990, has changed its appearance significantly. At the estimated distance of UW Cen, this nebula is approximately 0.6 ly in radius so the nebula cannot have physically altered in only 8 years.
arxiv +1 more source
Nebula: Distributed Edge Cloud for Data Intensive Computing
IEEE Transactions on Parallel and Distributed Systems, 2017 Centralized cloud infrastructures have become the popular platforms for data-intensive computing today. However, they suffer from inefficient data mobility due to the centralization of cloud resources, and hence, are highly unsuited for geo-distributed ...
A. Jonathan +4 more
semanticscholar +1 more source
A ROTATIONALLY POWERED MAGNETAR NEBULA AROUND SWIFT J1834.9–0846 [PDF]
, 2016 A wind nebula generating extended X-ray emission was recently detected surrounding Swift J1834.9–0846. This is the first magnetar for which such a wind nebula was found.
D. Torres
semanticscholar +1 more source
Digital Assistant for Arrival Scheduling with Conflict Prevention Capabilities
Information, 2023 Nowadays, in view of the growing traffic volume, an appropriate aircraft sequencing in the arrival sector is needed to maintain safety levels and improve the performance of the runway system and flight times.
Francesco Nebula +3 more
doaj +1 more source
Visual Wide Binaries and the Structure of Planetary Nebulae [PDF]
, 1999 In a recent work Ciardullo et al. (1999) list 19 planetary nebulae surveyed by the Hubble Space Telescope for the presence of resolved visual binary companions of their central stars. For ten planetary nebulae they argue for probable physical association of the resolved stars with the central stars, while for nine the association is less likely.
arxiv +1 more source
A MUSE map of the central Orion Nebula (M 42) [PDF]
, 2015 We present a new integral field spectroscopic dataset of the central part of the Orion Nebula (M 42), observed with the MUSE instrument at the ESO VLT. We reduced the data with the public MUSE pipeline.
P. Weilbacher +26 more
semanticscholar +1 more source
Panchromatic HST/WFC3 Imaging Studies of Young, Rapidly Evolving Planetary Nebulae. II. NGC 7027
The Astrophysical Journal, 2022 The iconic planetary nebula (PN) NGC 7027 is bright, nearby ( D ∼ 1 kpc), highly ionized, intricately structured, and well observed. This nebula is hence an ideal case study for understanding PN shaping and evolution processes.
Paula Moraga Baez +4 more
doaj +1 more source
Discovery of a nearby twin of SN1987A's nebula around the luminous blue variable HD168625: Was Sk--69 202 an LBV? [PDF]
Astron.J.133:1034-1040,2007, 2006 Spitzer images of the luminous blue variable (LBV) candidate HD168625 reveal the existence of a bipolar nebula several times larger than its previously-known equatorial dust torus. The outer nebula of HD168625 has a full extent of about 80 arcsec or 0.85 pc, and one of the lobes has a well-defined polar ring.
arxiv +1 more source
Scaled laboratory experiments explain the kink behaviour of the Crab Nebula jet
Nature Communications, 2016 The remarkable discovery by the Chandra X-ray observatory that the Crab nebula’s jet periodically changes direction provides a challenge to our understanding of astrophysical jet dynamics. It has been suggested that this phenomenon may be the consequence
C.K. Li +30 more
semanticscholar +1 more source
Journal of Adolescent &Adult Literacy, EarlyView.Abstract The 2016 presidential election marked the beginning of a so‐called “post‐truth era” in which mis‐ and disinformation have contributed to political polarization and violence, the acceleration of global warming, and thousands of preventable deaths.
Benjamin N. Lathrop
wiley +1 more source