A Photo-Hadronic Model of the Large Scale Jet of PKS 0637-752

  title={A Photo-Hadronic Model of the Large Scale Jet of PKS 0637-752},
  author={Masaaki Kusunose and Fumio Takahara},
  journal={arXiv: High Energy Astrophysical Phenomena},
Strong X-ray emission from large scale jets of radio loud quasars still remains an open problem. Models based on inverse Compton scattering off CMB photons by relativistically beamed jets have recently been ruled out, since Fermi LAT observations for 3C 273 and PKS 0637-752 give the upper limit far below the model prediction. Synchrotron emission from a separate electron population with multi-hundred TeV energies remains a possibility although its origin is not well known. We examine a photo… Expand

Figures and Tables from this paper

A Photo-hadronic Model of the Large-scale Jets of 3C 273 and PKS 1136–135
X-ray bright knots of kpc-scale jets of several radio loud quasars have been an actively discussed issue. Among various models to explain observations, synchrotron radiation from the electronExpand
Fermi non-detections of four X-ray jet sources and implications for the IC/CMB mechanism
Since its launch in 1999, the Chandra X-ray observatory has discovered several dozen X-ray jets associated with powerful quasars. In many cases the X-ray spectrum is hard and appears to come from aExpand
Constraints on Proton Synchrotron Origin of Very High Energy Gamma Rays from the Extended Jet of AP Librae
The multi-wavelength photon spectrum from the BL Lac object AP Librae extends from radio to TeV gamma rays. The X-ray to very high energy gamma ray emission from the extended jet of this source hasExpand
A two population electron synchrotron model for knots of extended jets
Abstract Radio observations by ALMA and upper limits on gamma ray flux by Fermi LAT have ruled out inverse Compton scattering of Cosmic Microwave Background radiation by relativistic electronsExpand
Extended Jets of AGN: Proton Synchrotron Emission
Many extended jets of kilo-parsec scale size from Active Galactic Nuclei have been detected by Hubble and Chandra telescopes. IC/CMB model for X-ray emission from six extended jets has been ruledExpand
Determining the composition of radio plasma via circular polarization: the prospects of the Cygnus A hot spots
The composition of the relativistic plasma produced in active galactic nuclei and ejected via powerful jets into the interstellar/intergalactic medium is still a major unsettled issue. It might be aExpand
Investigation of the γ-ray spectrum of CTA 102 during the exceptional flaring state in 2016–2017
The flat spectrum radio quasar CTA 102 entered an extended period of activity from 2016 to 2017 during which several strong $\gamma$-ray flares were observed. Using Fermi large area telescope data aExpand
Detection of an Optical/UV Jet/Counterjet and Multiple Spectral Components in M84
We report an optical/UV jet and counterjet in M84, previously unreported in archival HST imaging. With archival VLA, ALMA, and Chandra imaging, we examine the first well-sampled spectral energyExpand
XMM-Newton observation of the ultraluminous quasar SDSS J010013.02+280225.8 at redshift 6.326
NSFC [11273060, 91230115, 11333008, 11373008, 11533001]; State Key Development Program for Basic Research of China [2013CB834900, 2015CB857000]; ERC [340442]; NSF [AST 15-15115]; Institute ofExpand


Fermi Rules Out the IC/CMB Model for the Large Scale Jet X-ray Emission of 3C 273
The X-ray emission mechanism in large-scale jets of powerful radio quasars has been a source of debate in recent years, with two competing interpretations: either the X-rays are of synchrotronExpand
The X-Ray Jet of PKS 0637–752: Inverse Compton Radiation from the Cosmic Microwave Background?
We propose that the X-ray emission detected by Chandra from the 100 kpc-scale jet of PKS 0637-752 is produced through inverse Compton scattering of the cosmic microwave background (CMB). We analyzeExpand
Ruling out IC/CMB X-rays in PKS 0637-752 and the Implications for TeV Emission from Large-Scale Quasar Jets
The Chandra X-ray observatory has discovered dozens of resolved, kiloparsec-scale jets associated with powerful quasars in which the X-ray fluxes are observed to be much higher than the expectedExpand
Quasar X-Ray Jets: Gamma-Ray Diagnostics of the Synchrotron and Inverse Compton Hypotheses: The Case of 3C 273
The process responsible for the Chandra-detected X-ray emission from the large-scale jets of powerful quasars is a matter of ongoing debate. The two main contenders are external Compton scatteringExpand
Proton Synchrotron Radiation from Extended Jets of PKS 0637-752 and 3C 273
Recently, the IC/CMB X-ray mechanism has been strongly disfavoured for 3C 273 and PKS 0637-752 since the anomalously hard and steady gamma-ray emission predicted by such models violates theExpand
Proton-synchrotron radiation of large-scale jets in active galactic nuclei
The X-radiation of large-scale extragalactic jets poses a serious challenge for the conventional electron-synchrotron or inverse Compton models suggested to explain the overall non-thermal emissionExpand
Chandra Observations of the X-Ray Jet of 3C 273
We report results from Chandra observations of the X-ray jet of 3C 273 during the calibration phase in 2000 January. The zeroth-order images and spectra from two 40 ks exposures with the High-EnergyExpand
Large-scale jets in active galactic nuclei: multiwavelength mapping
ABSTRA C T X-ray emission from large-scale extragalactic jets is likely to be as a result of inverse Compton scattering of relativistic particles off seed photons of both the cosmic microwaveExpand
Structure of the X-Ray Emission from the Jet of 3C 273
We present images from five observations of the quasar 3C 273 with the Chandra X-Ray Observatory. The jet has at least four distinct features that are not resolved in previous observations. The firstExpand
Spitzer IRAC Imaging of the Relativistic Jet from Superluminal Quasar PKS 0637?752
Emission from the relativistic jet located hundreds of kiloparsecs from the core of the superluminal quasar PKS 0637-752 was detected at 3.6 and 5.8 μm with the Infrared Array Camera (IRAC) on theExpand