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
doaj +1 more source
The Astrophysical Journal, 2023 We have studied the evolution of HuBi 1–like planetary nebulae, considering several stages of mass injection. We have carried out numerical ionization+1D hydrodynamics+atomic/ionic rate models with our code Coral1d to reproduce planetary nebulae that ...
Ary Rodríguez-González +6 more
doaj +1 more source
THE CHANDRA PLANETARY NEBULA SURVEY (ChanPlaNS). III. X-RAY EMISSION FROM THE CENTRAL STARS OF PLANETARY NEBULAE [PDF]
, 2014 We present X-ray spectral analysis of 20 point-like X-ray sources detected in Chandra Planetary Nebula Survey observations of 59 planetary nebulae (PNe) in the solar neighborhood.
R. Montez +28 more
semanticscholar +1 more source
THE CHANDRA PLANETARY NEBULA SURVEY (ChanPlaNS). II. X-RAY EMISSION FROM COMPACT PLANETARY NEBULAE [PDF]
, 2014 We present results from the most recent set of observations obtained as part of the Chandra X-ray observatory Planetary Nebula Survey (ChanPlaNS), the first comprehensive X-ray survey of planetary nebulae (PNe) in the solar neighborhood (i.e., within ∼1 ...
M. Freeman +75 more
semanticscholar +1 more source
MAGIC very large zenith angle observations of the Crab Nebula up to 100 TeV [PDF]
Astronomy & Astrophysics, 2020 Aims. We measure the Crab Nebula γ-ray spectral energy distribution in the ~100 TeV energy domain and test the validity of existing leptonic emission models at these high energies. Methods.
M. Acciari +170 more
semanticscholar +1 more source
Herschel spectral mapping of the Helix nebula (NGC 7293) - Extended CO photodissociation and OH+ emission [PDF]
, 2014 Context. The Helix nebula (NGC 7293) is our closest planetary nebulae. Therefore, it is an ideal template for photochemical studies at small spatial scales in planetary nebulae. Aims.
M. Etxaluze +19 more
semanticscholar +1 more source
Fast radio bursts as synchrotron maser emission from decelerating relativistic blast waves [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Fast radio bursts (FRBs) can arise from synchrotron maser emission at ultrarelativistic magnetized shocks, such as produced by flare ejecta from young magnetars. We combine particle-in-cell simulation results for the maser emission with the dynamics of
B. Metzger, B. Margalit, L. Sironi
semanticscholar +1 more source
The Continuum Emission from Planetary Nebulae [PDF]
Symposium - International Astronomical Union, 1988 The study of nebular continuum emission is important for several reasons (Pottasch 1984, Planetary Nebulae, Dordrecht: Reidel). First of all, it can provide information about the temperature and the density of the nebula, when the object is large enough, or when the central star is weak enough, so that the nebular continuum is easily observed without ...
openaire +1 more source
On the magnetohydrodynamic modelling of the Crab nebula radio emission [PDF]
, 2013 In recent years, it has become a well-established paradigm that many aspects of the physics of Pulsar Wind Nebulae (PWNe) can be fully accounted for within a relativistic MHD description.
B. Olmi +4 more
semanticscholar +1 more source
A Concordance Picture of FRB 121102 as a Flaring Magnetar Embedded in a Magnetized Ion–Electron Wind Nebula [PDF]
Astrophysical Journal, 2018 The fast radio burst FRB 121102 has repeated multiple times, enabling the identification of its host galaxy and of a spatially coincident, compact, steady (“persistent”) radio synchrotron source.
B. Margalit, B. Metzger
semanticscholar +1 more source