Results 91 to 100 of about 1,583 (233)

Observations of the Polarisation of the Anomalous Microwave Emission: A Review

open access: yesAdvances in Astronomy, 2012
The observational status of the polarisation of the anomalous microwave emission (AME) is reviewed, both for individual compact Galactic regions as well as for the large-scale Galactic emission.
J. A. Rubiño-Martín   +3 more
doaj   +1 more source

Investigating the Anticorrelation between Photon Index and Flux of the Crab Using RXTE and NuSTAR

open access: yesThe Astrophysical Journal
We present a systematic study of the recently reported anticorrelation between X-ray flux and photon index (Γ) in the Crab Nebula, using archival Rossi X-Ray Timing Explorer (RXTE) Proportional Counter Array (3–50 keV), RXTE High Energy X-ray Timing ...
Debjit Chatterjee   +4 more
doaj   +1 more source

Silicate and ice emission bands in the ISO spectrum of the PAH-emitting carbon-rich planetary nebula CPD-56°8032 [PDF]

open access: bronze, 1999
Martin Cohen   +7 more
openalex   +1 more source

Discovery of spectacular quasar-driven superbubbles in red quasars. [PDF]

open access: yesSci Adv, 2023
Shen L   +9 more
europepmc   +1 more source

Optical Spectroscopy and Photoionization Model of Planetary Nebula NGC 6572

open access: yesJournal of Mathematical and Fundamental Sciences
We investigated NGC 6572 through optical spectroscopy to determine its kinematical and chemical properties. Two intermediate dispersion spectra (R~5000) centered around Hα and Hβ were used to derive the nebular expansion velocity from emission lines ...
Muhammad Fajrin   +2 more
doaj   +1 more source

Detection of companion galaxies around hot dust-obscured hyper-luminous galaxy W0410-0913. [PDF]

open access: yesNat Commun, 2022
Ginolfi M   +20 more
europepmc   +1 more source

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