Simultaneous X-Ray and Optical Polarization Observations of the Blazar Mrk 421
The Astrophysical JournalWe present near-simultaneous X-ray and optical polarization measurements in the high synchrotron peaked (HSP) blazar Mrk 421. The X-ray polarimetric observations were carried out using Imaging X-ray Polarimetry Explorer (IXPE) on 2023 December 6.
Athira M. Bharathan +9 more
doaj +1 more source
X-Ray Polarized View of the Accretion Geometry in the X-Ray Binary Circinus X-1
The Astrophysical Journal LettersCir X-1 is a neutron star X-ray binary characterized by strong variations in flux during its eccentric ∼16.6 day orbit. There are also strong variations in the spectral state, and it has historically shown both atoll and Z state properties.
John Rankin +103 more
doaj +1 more source
Proceedings of The Extreme and Variable High Energy Sky — PoS(Extremesky 2011), 2012 openaire +1 more source
X-Ray and Radio Polarimetry of the Neutron Star Low-mass X-Ray Binary GX 13+1
The Astrophysical JournalWe report the X-ray and radio polarization study of the neutron star low-mass X-ray binary (LMXB) GX 13+1 using the Imaging X-ray Polarimetry Explorer (IXPE) and Very Large Array.
Unnati Kashyap +5 more
doaj +1 more source
Data reduction and analysis for the graphite crystal X-ray spectrometer and polarimeter experiment flown aboard OSO-8 spacecraft [PDF]
The documentation and software programs developed for the reception, initial processing (quickbook), and production analysis of data obtained by solar X-ray spectroscopy, stellar spectroscopy, and X-ray polarimetry experiments on OSO-8 are listed.
Novick, R.
core +1 more source
Modeling Fast X-Ray Variability around an Accreting Black Hole
The Astrophysical JournalX-ray interband time lags are observed during the outbursts of black hole X-ray binaries. Timing analysis of fast variability in low Fourier frequency bands shows that high-energy photons lag behind low-energy photons, a phenomenon referred to as hard ...
Yejing Zhan +4 more
doaj +1 more source
X-ray Polarization of Blazars and Radio Galaxies Measured by the Imaging X-ray Polarimetry Explorer
GalaxiesX-ray polarization, which now can be measured by the Imaging X-ray Polarimetry Explorer (IXPE), is a new probe of jets in the supermassive black hole systems of active galactic nuclei (AGNs).
Alan P. Marscher +6 more
doaj +1 more source
X-Ray Polarization Study of the Neutron Star Low-mass X-Ray Binary GX 349+2
The Astrophysical JournalWe report the first X-ray polarimetric results of the neutron star (NS) low-mass X-ray binary Z-source GX 349+2 using the Imaging X-ray Polarimetry Explorer (IXPE). We discovered that the X-ray source was polarized at a polarization degree of PD = 1.1% ±
Unnati Kashyap +5 more
doaj +1 more source
Magnetic Field Geometry of the Gamma-Ray Binary PSR B1259–63 Revealed via X-Ray Polarization
The Astrophysical Journal LettersSome X-ray binaries containing an energetic pulsar in orbit around a normal star accelerate particles to high energies in the shock cone formed where the pulsar and stellar winds collide.
Philip Kaaret +8 more
doaj +1 more source
X-Ray Polarimetric Observations of the Western Hotspot of Pictor A
The Astrophysical Journal LettersWe present the results of the analysis of a ∼2 Msec spectropolarimetric observation of the western hotspot (WHS) of the radio galaxy Pictor A. This is the brightest extragalactic radio source that allows us to carry out spatially resolved observations ...
Stefano Tugliani +12 more
doaj +1 more source