Can X-Ray Jets Be Cosmic Beacons?
نویسنده
چکیده
If X-rays observed from any extragalactic radio jets are due to inverse Compton scattering on the cosmic microwave background (CMB) radiation, then such a source will be detectable with the same surface brightness anywhere in the more distant universe. Chandra observations imply that such systems do exist, and will therefore serve as Cosmic Beacons out to the redshift at which they form.
منابع مشابه
A Chandra Survey of Quasar Jets: First Results
We present results from Chandra X-ray imaging and spectroscopy of a flux-limited sample of flat spectrum radio-emitting quasars with jet-like extended structure. Twelve of twenty quasar jets are detected in 5 ks ACIS-S exposures. The quasars without X-ray jets are not significantly different from those in the sample with detected jets except that the extended radio emission is generally fainter...
متن کاملEnergisation of interstellar media and cosmic ray production by jets from X-ray binaries
Drawing on recent estimates of the power of jets from X-ray binary systems as a function of X-ray luminosity, combined with improved estimates of the relevant Log(N)Log(LX) luminosity functions, we calculate the total energy input to the interstellar medium (ISM) from these objects. The input of kinetic energy to the ISM via jets is dominated by those of the black hole systems, in contrast to t...
متن کاملChandra Observations of Radio-loud Quasars at Z > 4: X-rays from the Radio Beacons of the Early Universe
We present the results of Chandra observations of six radio-loud quasars (RLQs) and one optically bright radioquiet quasar (RQQ) at z ≈ 4.1–4.4. These observations cover a representative sample of RLQs with moderate radio-loudness (R ≈ 40–400), filling the X-ray observational gap between optically selected radio-quiet quasars (predominantly R ∼< 2–10) and the five known blazars at z > 4 (R ≈ 80...
متن کاملChandra discovery of 10 new x-ray jets associated with FR II radio core-selected AGNs in the Mojave sample
The Chandra X-ray Observatory has proven to be a vital tool for studying high-energy emission processes in jets associated with active galactic nuclei (AGNs). We have compiled a sample of 27 AGNs selected from the radio flux-limited MOJAVE (Monitoring of Jets in AGNs with VLBA Experiments) sample of highly relativistically beamed jets to look for correlations between X-ray and radio emission on...
متن کاملA Chandra Search for X-ray Jets in Redshift 6 Quasars
We have searched for X-ray jets in the recent Chandra observations of three Sloan Digital Sky Survey (SDSS) quasars at redshift z ≈ 6. All 3 quasars were detected in X-rays in these relatively short observations. SDSS1030+0524 is not consistent with a point source, and may be a gravitationally lensed system. We find a possible jet-like feature 23 from the quasar SDSS 1306+0356. We can explain t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008