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A search for runaway stars in 12 Galactic supernova remnants
Astronomische Nachrichten, Volume 342, Issue 3, Page 553-577, March 2021., 2021 Runaway stars can result from core‐collapse supernovae in multiple stellar systems. If the supernova disrupts the system, the companion is ejected with its former orbital velocity. A clear identification of a runaway star can yield the time and place of the explosion, as well as orbital parameters of the pre‐supernova binary system.
Oliver Lux +3 more
wiley +1 more source
What brakes the Crab pulsar? [PDF]
Astronomy & Astrophysics, 2016 Optical observations provide convincing evidence that the optical phase of the Crab pulsar follows the radio one closely. Since optical data do not depend on dispersion measure variations, they provide a robust and independent confirmation of the radio timing solution.
Andrej Čadež +10 more
openaire +6 more sources
The Astrophysical Journal, 2023 We report two low-frequency measurements of the power-law index for the amplitudes of giant radio pulses from the Crab pulsar. The two observations were taken with the Arecibo and Green Bank radio telescopes at center frequencies of 327 MHz and 350 MHz ...
Fronefield Crawford +6 more
doaj +1 more source
VERITAS observations of the Crab pulsar [PDF]
AIP Conference Proceedings, 2012 The Crab pulsar has been widely studied across the electromagnetic spectrum from radio to gamma-ray energies. The exact nature of the emission processes taking place in the pulsar is a matter of broad debate. Above a few GeV the energy spectrum turns over suddenly.
Benjamin Zitzer +1 more
openaire +4 more sources
Inferring the origins of the pulsed γ-ray emission from the Crab pulsar with ten-year Fermi-LAT data [PDF]
Astronomy & Astrophysics, 2020 Context. The Crab pulsar is a bright γ-ray source, which has been detected at photon energies up to ∼1 TeV. Its phase-averaged and phase-resolved γ-ray spectra below 10 GeV exhibit exponential cutoffs, while those above 10 GeV apparently follow simple ...
P. Yeung
semanticscholar +1 more source
On the VHE Spectrum and Formation of the Teraelectronvolt Pulsed Emission of the Crab Pulsar
Galaxies, 2022 In the present paper, a model for the pulsed γ-ray emission of the Crab pulsar from 0.01 GeV to 1 TeV in the context of synchrotron emission generated in the vicinity of a light cylinder is developed.
Nino Chkheidze
doaj +1 more source
The Radio Parallax of the Crab Pulsar: A First VLBI Measurement Calibrated with Giant Pulses
The Astrophysical Journal, 2023 We use four observations with the European very long baseline interferometry (VLBI) network to measure the first precise radio parallax of the Crab Pulsar. We found two in-beam extragalactic sources just outside the Crab Nebula, with one bright enough to
Rebecca Lin +4 more
doaj +1 more source
On Pair Production in the Crab Pulsar [PDF]
The Astrophysical Journal, 1998 We consider the widespread assumption that coherent pulsar radio emission is based on extended pair production leading to plasma densities highly exceeding the Goldreich-Julian density. We show as an example that the observed low frequency (160 MHz) emission of the Crab pulsar is incompatible to the model of extended pair production.
Axel Jessner +3 more
openaire +4 more sources
Polarization measurements of the Crab Pulsar with POLAR [PDF]
, 2021 POLAR is a dedicated Gamma-Ray Burst polarimeter making use of Compton-scattering which took data from the second Chinese spacelab, the Tiangong-2 from September 2016 to April 2017. It has a wide Field of View of $\sim6$ steradians and an effective area of $\sim400\ cm^2$ at 300 keV.
arxiv +1 more source
Spectroscopy of the Crab Pulsar [PDF]
Astronomy & Astrophysics, 2001 We present new, high signal-to-noise spectroscopy of the Crab Pulsar in the range 5000 7000 A. The observations were carried out with the 6-meter telescope of the SAO with the spectrograph SP-124 with a resolution of 2 A. After reduction of the Crab Nebula emission, the dereddened pulsar spectrum can be tted by ap ower law with = 0:15 0:15.
V. V. Neustroev +3 more
openaire +2 more sources