Editing 3C 273 (section)

===Large-scale jet===
The quasar has a large-scale visible [[astrophysical jet|jet]], which measures ~{{convert|200000|ly|kpc}} long, having an apparent size of 23″.<ref name="Uchiyamaetal2006"/> Such jets are believed to be created by the interaction of the central [[black hole]] and the [[accretion disk]]. In 1995, optical imaging of the jet using the [[Hubble Space Telescope]] revealed a structured [[Galaxy morphological classification|morphology]] evidenced by repeated bright knots interlaced by areas of weak emission.<ref name="Uchiyamaetal2006"/> The viewing angle of the jet is about 6° as seen from Earth. The jet was observed to abruptly change direction by an intrinsic angle of 2° in 2003, which is larger than the jet's intrinsic opening angle of 1.1°.<ref>{{cite journal | title=An Oversized Magnetic Sheath Wrapping around the Parsec-scale Jet in 3C 273 | last1=Lisakov | first1=M. M. | last2=Kravchenko | first2=E. V. | last3=Pushkarev | first3=A. B. | last4=Kovalev | first4=Y. Y. | last5=Savolainen | first5=T. K. | last6=Lister | first6=M. L. | journal=The Astrophysical Journal | volume=910 | issue=1 | id=35 | date=March 2021 | page=35 | doi=10.3847/1538-4357/abe1bd | arxiv=2102.04563 | bibcode=2021ApJ...910...35L | s2cid=231855529 | doi-access=free }}</ref> An expanding cocoon of heated gas is being generated by the jet, which may be impacting an inclined disk of gas within the central {{val|6|u=kpc|p=~&nbsp;}}.<ref name=Husemann_et_al_2019/>