It's possible that X-273 is the NGAD tech demonstrator because the resume of Colonel Dan Javorsek mentions "high-priority next generation air dominance flight tests of unique experimental aircraft", but mentions nothing about classified prototypes.

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 first knot in the jet (A1) is very bright in X-rays. Its X-ray spectrum is well fitted with a power law with = 0.60 ± 0.05 (where S - ).

flow is relativistic in the jet on a kiloparsec scale. Harris & Stern (1987) used the Einstein Observatory data on 3C 273 to detect X-ray emission from t e jet, which was less than 1% of the flux of the core. More recent

age of the 3C 273 jet in the 0.2–8 keV band. The X-ray jet is ∼8′′-long and has a knotty morphology, starting with a bright, resolved knot at ∼ 13′′ from the core, coincident with optical kno

Spectral Analysis of 3C 273's Jet core and jet, by the Chandra X-Ray telescope since its launch. These observations, summarized in Table 3.1, totaling 236.58 ks exposure time, have primarily been used for ongoing effective area calibration, and were all taken with the HETG grating placed in

2025年2月8日 · Context: 3C 273, a well-studied active galactic nucleus (AGN), displays characteristics of both jetted-AGN and Seyfert galaxies, making it an excellent source to study the disc-jet connection in AGN. Aims: To investigate the disk-jet scenario in 3C 273 using broadband (0.3--78 keV) X-ray spectra from {\it XMM-Newton} and {\it NuSTAR}.

2025年2月11日 · In this work, we fitted the broadband (0.3–78.0 keV) X-ray data of 3C 273 from XMM-Newton and NuSTAR using combined accretion-ejection and jet-based models. We summarize the main findings of our investigation below:

In this thesis I describe our findings from the search for narrow emission lines in the X-ray spectrum of the jet in the AGN 3C 273, and explain why the search for a more complete understanding of Active Galactic Nuclei (AGN) is an important part of modern astrophysics.

2022年5月13日 · This is quasar 3C 273 with jet imaged from Melbourne, Australia with EdgeHD11 at f/10. 56 x 5m exposures with C filter and ASI1600MMPro, 0.28" per pixel. This is the first quasar identified with a large redshift, and it required the Palomar 200" to image the jet at the time, around 1962-3.

ated structures in the Universe [2]. The detailed study of extragalactic jet structure in all wavelengths is important task for modeling the different astrophysical processes that take place in jet, for example the acceleration of cosmic rays up to the ultra high energies due to Fermi acceleration mechanisms [3], [4] and