Scattering in the vicinity of relativistic jets:
 A method for constraining jet parameters

We apply a two-zone MHD model to the jet of M 87. The model consists of an inner relativistic outflow, which is surrounded by a nonrelativistic outer disk-wind. The outer disk-wind collimates very well through magnetic self-collimation and confines the inner relativistic jet into a narrow region around the rotation axis. Further, we show by example, that such models reproduce very accurately the observed opening angle of the M 87 jet over a large range from the kiloparsec scale down to the sub-parsec scale.

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“…Γ ∼ 2−4, a range, which is compatible with the currently favoured values (Biretta et al 1995;Cramphorn et al 2004;Biretta et al 1999).…”

Section: Discussionsupporting

confidence: 84%

Magnetic collimation of the relativistic jet in M 87

Gracia

Tsinganos

Bogovalov

2005

A&A

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“…Discovery of a line formed by the resonantly scattered radiation may shed light upon the quasar radiation beam width, as for the narrow beam much less gas is irradiated (Cramphorn et al 2004).…”

Section: Resonant Scattering In the Surroundings Of Quasarmentioning

confidence: 99%

Hydrogen-like nitrogen radio line from hot interstellar and warm-hot intergalactic gas

Sunyaev

Docenko

2007

Astron. Lett.

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Hyperfine structure lines of highly-charged ions may open a new window in observations of hot rarefied astrophysical plasmas. In this paper we discuss spectral lines of isotopes and ions abundant at temperatures 10 5 − 10 7 K, characteristic for warm-hot intergalactic medium, hot interstellar medium, starburst galaxies, their superwinds and young supernova remnants. Observations of these lines will allow to study bulk and turbulent motions of the observed target and will broaden the information about the gas ionization state, chemical and isotopic composition. The most prospective is the line of the major nitrogen isotope having wavelength λ = 5.65 mm (Sunyaev & Churazov 1984). Wavelength of this line is well-suited for observation of objects at z ≈ 0.15 − 0.6 when it is redshifted to 6.5 − 9 mm spectral band widely-used in ground-based radio observations, and, for example, for z 1.3, when the line can be observed in 1.3 cm band and at lower frequencies. Modern and future radio telescopes and interferometers are able to observe the absorption by 14 N VII in the warm-hot intergalactic medium at redshifts above z ≈ 0.15 in spectra of brightest mm-band sources. Sub-millimeter emission lines of several most abundant isotopes having hyperfine splitting might also be detected in spectra of young supernova remnants. PACS: 32.10.Fn, 98.62.Ra, 32.30.Bv

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“…Besides emission from supra-thermal populations of particles in regions with ordered magnetic fields (e.g. connected with cold fronts and shocks, [32]), these include scattering of the Brightest Cluster Galaxy's quasar emission (intrinsically polarized or non-polarized: [33][34][35][36]) and velocity-sensitive resonant scattering of the line emission ( [35,[37][38][39]. Probing gas turbulence, evolution of magnetic fields, and particle kinetics, these signals are capable of providing information on effective collision time scales, viscosity, and heat conduction, and might help to shed light on fundamental microphysics of the turbulent, weakly-collisional high-β plasma of the Intra Cluster Medium (ICM).…”

Section: Clusters Of Galaxiesmentioning

confidence: 99%

A polarized view of the hot and violent universe

et al. 2021

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X-ray polarimetry has long been considered the ‘holy grail’ of X-ray astronomy. Fortunately, after a silence of more than 40 years, the field is now rejuvenating. In fact, an X-ray polarimeter onboard a Cube-sat nano-satellite has been recently successfully operated. IXPE, the Imaging X-ray Polarimetry Explorer, will be launched in 2021 while eXTP, containing a larger version of IXPE, is expected to be launched in 2027. Although at present it is difficult to predict the discoveries that, given their exploratory nature, IXPE and eXTP will obtain, the path for a follow-up mission can already be envisaged. In this paper we describe the scientific goals of such a follow-up mission, and present a medium-size mission profile that can accomplish this task.

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Scattering in the vicinity of relativistic jets: A method for constraining jet parameters

Cited by 7 publications

References 27 publications

Magnetic collimation of the relativistic jet in M 87

Magnetic collimation of the relativistic jet in M 87

Hydrogen-like nitrogen radio line from hot interstellar and warm-hot intergalactic gas

A polarized view of the hot and violent universe

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