Results 51 to 60 of about 1,887,037 (257)
The NIKA polarimeter on science targets: Crab nebula observations at 150 GHz and dual-band polarization images of Orion Molecular Cloud OMC-1 [PDF]
EPJ Web of Conferences, 2020 We present here the polarization system of the NIKA camera and give a summary of the main results obtained and performed studies on Orion and the Crab nebula.
Ritacco A. +41 more
doaj +1 more source
Spectroscopy of Faint Emission Line Nebulae [PDF]
, 2002 6 pages, 3 figures, to be published in "Scientific Drivers for ESO Future VLT/VLTI Instrumentation", ESO Workshop ...
openaire +2 more sources
THE 15–20 μm EMISSION IN THE REFLECTION NEBULA NGC 2023 [PDF]
, 2011 We present 15–20 μm spectral maps toward the reflection nebula NGC 2023 obtained with the Infrared Spectrograph in short-wavelength, high-resolution mode on board the Spitzer Space Telescope.
E. Peeters +3 more
semanticscholar +1 more source
Floating zone growth of high‐purity MgO substrate single crystals
Acta Crystallographica Section B, EarlyView.High‐purity MgO substrate crystals grown by the optical floating zone technique are demonstrated, which can serve as a foundation for the development of novel device concepts based on epitaxially grown thin films.MgO single crystals with diameters between 3.5 and 5 mm and lengths up to 40 mm were grown by the optical floating zone technique (OFZ ...
Christo Guguschev +7 more
wiley +1 more source
The Crab Nebula Revisited Using HST/WFC3
The Astrophysical JournalIt has been over 24 years since the iconic Crab Nebula has been visited by the high spatial resolution eye of the Hubble Space Telescope (HST). The expanding nebula is dynamic on these timescales, with many of the outer filaments of the nebula known to ...
William P. Blair +7 more
doaj +1 more source
Photometric and spectroscopic study of five pre-main sequence stars in the vicinity of NGC 7129 [PDF]
Serbian Astronomical Journal, 2019 We present results from long-term optical photometric and spectroscopic observations of five pre-main sequence stars, located in the vicinity of the bright nebula NGC 7129.
Semkov E.H., Ibryamov S.I., Peneva S.P.
doaj +1 more source
THE CRAB NEBULA SUPER-FLARE IN 2011 APRIL: EXTREMELY FAST PARTICLE ACCELERATION AND GAMMA-RAY EMISSION [PDF]
, 2011 We report on the extremely intense and fast gamma-ray flare above 100 MeV detected by AGILE from the Crab Nebula in mid-April 2011. This event is the fourth of a sequence of reported major gamma-ray flares produced by the Crab Nebula in the period 2007 ...
E. Striani +49 more
semanticscholar +1 more source
International Journal of Urban and Regional Research, EarlyView.Abstract In a context of unprecedented urbanization, nineteenth‐century European cities faced the ‘housing question’, i.e. precarious housing standards and affordability problems. While existing research has well described these historical housing problems in single‐city studies or in national urbanization histories, to our knowledge, there are hardly ...
Sebastian Kohl +2 more
wiley +1 more source
Bursts of the Crab Nebula gamma-ray emission at high and ultra-high energies
EPJ Web of Conferences, 2017 Characteristics of the flares of gamma rays detected from the Crab Nebula by the AGILE and Fermi-LAT satellite instruments are compared with those of a gamma ray burst recorded by several air shower arrays on February 23, 1989 and with one recent ...
Lidvansky A.S.
doaj +2 more sources
LAMOST Medium-resolution Spectroscopic Survey of the Rosette Nebula
The Astronomical JournalWe report multifiber, medium-resolution spectroscopy of the Rosette Nebula with full spatial coverages, and present a table of the nebular parameters based on the spatially resolved measurements of emission lines.
Li-Yue Zhang +6 more
doaj +1 more source