منابع مشابه
On the Temperature Structure of M87
We revisit the XMM-Newton observation of M87 focusing our attention on the temperature structure. We find that spectra for most regions of M87 can be adequately fit by single temperature models. Only in a few regions, which are cospatial with the E and SW radio arms, we find evidence of a second temperature. The cooler component (kT ∼ 0.8-1 keV) fills a small volume compared to the hotter compo...
متن کاملThe M87 Jet
We investigate the structure and dynamics of the M87 jet based on multi-frequency VLBI observations and MHD jet theories. Millimeter VLBI cores are considered as innermost jet emissions. The jet structure up to ∼ 105 rs is described as a parabolic streamline, indicating the lateral expansion under a confinement by the stratified ISM. Thus, the jet collimation maintains in five orders of magnitu...
متن کاملThe Event Horizon of M87
The M 6 109 × ⊙ supermassive black hole at the center of the giant elliptical galaxy M87 powers a relativistic jet. Observations at millimeter wavelengths with the Event Horizon Telescope have localized the emission from the base of this jet to angular scales comparable to the putative black hole horizon. The jet might be powered directly by an accretion disk or by electromagnetic extraction of...
متن کاملThe Continuing Saga of the Explosive Event(s) in the M87 Jet: Is M87 a Blazar?
We review the recent data on the knot HST-1 in the M87 jet in the context of typical blazar behavior. In particular we discuss the wide-band flare of 2005 which peaked at a factor of 50 to 80 times the intensity observed in 2000; the superluminal radio features; and the arguments that support the hypothesis that HST-1 was the source of the excess TeV emission found by H.E.S.S. in 2005. To the e...
متن کاملTemperature Simulations in Cooling Appliances
The R&D laboratory of Gorenje d. d. develops complex cooling appliances. To develop optimalperformance appliances, regarding all functionalities, also engineers from other areas are participating in a developing process. To allow for an easier and faster development, we used mathematically-based simulation and optimization tools. A cooling appliance operates optimally when it is able to cool to...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2018
ISSN: 1538-4357
DOI: 10.3847/1538-4357/aad73a