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
On the variability of the GeV and multi-TeV gamma-ray emission from the Crab nebula [PDF]
, 2011 Recently, the AGILE γ -ray telescope has reported enhanced γ -ray emission above 100 MeV from the direction of the Crab nebula during a period of a few days. This intriguing observation has been confirmed by the Fermi Large Area Telescope (LAT).
W. Bednarek, W. Idec
openalex +3 more sources
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
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
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
Shedding new light on the Crab with polarized X-rays
Scientific Reports, 2017 Strong magnetic fields, synchrotron emission, and Compton scattering are omnipresent in compact celestial X-ray sources. Emissions in the X-ray energy band are consequently expected to be linearly polarized. X-ray polarimetry provides a unique diagnostic
M. Chauvin +15 more
doaj +1 more source
Evidence for the Disruption of a Planetary System During the Formation of the Helix Nebula
The Astronomical Journal, 2022 The persistence of planetary systems after their host stars evolve into their post-main-sequence phase is poorly constrained by observations. Many young white dwarf systems exhibit infrared excess emission and/or spectral absorption lines associated with
Jonathan P. Marshall +7 more
doaj +1 more source
A SEARCH FOR ENHANCED VERY HIGH ENERGY GAMMA-RAY EMISSION FROM THE 2013 MARCH CRAB NEBULA FLARE [PDF]
, 2013 In 2013 March, a flaring episode from the Crab Nebula lasting ∼2 weeks was detected by Fermi-LAT (Large Area Telescope on board the Fermi Gamma-ray Space Telescope).
E. Aliu +78 more
semanticscholar +1 more source
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