The Real-Time Evolution of V4334 Sgr
Galaxies, 2018 V4334 Sgr (Sakurai’s object) is an enigmatic evolved star that underwent a very late thermal pulse a few years before its discovery in 1996. It ejected a new hydrogen-deficient nebula in the process. The source has been observed continuously since,
Peter A. M. van Hoof +7 more
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A Spatially Resolved X-Ray Polarization Map of the Vela Pulsar Wind Nebula
The Astrophysical Journal Letters, 2023 In this paper, we present a full spatially resolved polarization map for the Vela pulsar wind nebula (PWN) observed by IXPE. By employing effective background discrimination techniques, our results show a remarkably high degree of local polarization in ...
Kuan Liu +14 more
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NILAI-NILAI EDUKATIF DALAM NOVEL SELENA DAN NEBULA KARYA TERE LIYE
BASINDO: Jurnal Kajian Bahasa, Sastra Indonesia, dan Pembelajarannya, 2022 ABSTRAK: Novel merupakan salah satu karya sastra yang di dalamnya terdapat nilai edukatif sebagai unsur ekstrinsik. Artikel ini menggunakan metode deskriptif kualitatif yang fokus menganalisis nilai edukatif pada novel Selena dan Nebula karya Tere Liye ...
Ananda Pramesti Regitha Cahyani
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The Astrophysical Journal, 2023 We have conducted long-slit spectroscopic observations and analyzed archival radio data for the ultraluminous X-ray source (ULX) NGC 4861 X-1. Our spectral line analysis unveils NGC 4861 X-1 as the fourth ULX situated within an X-ray photoionized nebula,
Hang Gong +7 more
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M 1–92 Revisited: New Findings and Open Questions: New NOEMA Observations of Minkowski’s Footprint
Galaxies, 2022 PN M 1–92, also known as Minkowski’s Footprint, is a textbook example of a massive pre-planetary nebula. It presents all the characteristics of this type of source: non-spherical symmetry (bipolar cylindrical symmetry in this case), high-velocity gas ...
Javier Alcolea +7 more
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Planetary nebula or symbiotic Mira? Near infrared colours mark the difference [PDF]
Astron.Astrophys.377:L18,2001, 2001 Nebulae around symbiotic Miras look very much like genuine planetary nebulae, although they are formed in a slightly different way. We present near infrared photometry of known and suspected symbiotic nebulae obtained with the Deep Near Infrared Southern Sky Survey (DENIS).
arxiv +1 more source
Nebula/DSCR1 upregulation delays neurodegeneration and protects against APP-induced axonal transport defects by restoring calcineurin and GSK-3β signaling. [PDF]
PLoS Genetics, 2013 Post-mortem brains from Down syndrome (DS) and Alzheimer's disease (AD) patients show an upregulation of the Down syndrome critical region 1 protein (DSCR1), but its contribution to AD is not known.
Jillian L Shaw, Karen T Chang
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An HST Snapshot Survey of Proto-Planetary Nebulae Candidates: Two Types of Axisymmetric Reflection Nebulosities [PDF]
ApJ, 528, 861, 1999 We report the results from an optical imaging survey of proto-planetary nebula candidates using the HST. We exploited the high resolving power and wide dynamic range of HST and detected nebulosities in 21 of 27 sources. All detected reflection nebulosities show elongation, and the nebula morphology bifurcates depending on the degree of the central star
arxiv +1 more source
The influence of planetary nebula gas density fluctuations to its emission line spectra
Вісник Астрономічної школи, 2000 The set of spheric-simmetrical photoionization models of planetary nebula luminescence for different radial gas density distributions for central stars temperatures T = 50000 K and T = 100000 K was created.
N. V. Gavrilova, N. L. Tishko
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Two-zone model for the broadband Crab nebula spectrum: microscopic interpretation
EPJ Web of Conferences, 2017 We develop a simple two-zone interpretation of the broadband baseline Crab nebula spectrum between 10−5 eV and ~ 100 TeV by using two distinct log-parabola energetic electrons distributions.
Fraschetti F., Pohl M.
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