Research output: Contribution to journal › Article
Detailed structure of the X-ray jet in 4C 19.44 (PKS1354+195). / Schwartz, D. A.; Harris, D. E.; Landt, H.; Siemiginowska, A.; Perlman, E. S.; Cheung, C. C.; Gelbord, J. M.; Worrall, D. M.; Birkinshaw, M.; Jorstad, S. G.; Marscher, A. P.; Stawarz, L.
In: Proceedings of the International Astronomical Union, Vol. 2, No. S238, 08.2006, p. 443-444.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Detailed structure of the X-ray jet in 4C 19.44 (PKS1354+195)
AU - Schwartz, D. A.
AU - Harris, D. E.
AU - Landt, H.
AU - Siemiginowska, A.
AU - Perlman, E. S.
AU - Cheung, C. C.
AU - Gelbord, J. M.
AU - Worrall, D. M.
AU - Birkinshaw, M.
AU - Jorstad, S. G.
AU - Marscher, A. P.
AU - Stawarz, L.
N1 - Funding Information: We acknowledge support of NASA contract NAS8 39073 to SAO, CXC grants GO5-6116B, GO6-7111A, GO6-7111B, and HST grant HST-GO-10762.01-A.
PY - 2006/8
Y1 - 2006/8
N2 - We investigate the variations of the magnetic field, Doppler factor, and relativistic particle density along the jet of a quasar at z=0.72. We chose 4C 19.44 for this study because of its length and straight morphology. The 18 arcsec length of the jet provides many independent resolution elements in the Chandra X-ray image. The straightness suggests that geometry factors, although uncertain, are almost constant along the jet. We assume the X-ray emission is from inverse Compton scattering of the cosmic microwave background. With the aid of assumptions about jet alignment, equipartition between magnetic-field and relativistic-particle energy, and filling factors, we find that the jet is in bulk relativistic motion with a Doppler factor 6 at an angle no more than 10 to the line of sight over de-projected distances 150600 kpc from the quasar, and with a magnetic field 10 Gauss.
AB - We investigate the variations of the magnetic field, Doppler factor, and relativistic particle density along the jet of a quasar at z=0.72. We chose 4C 19.44 for this study because of its length and straight morphology. The 18 arcsec length of the jet provides many independent resolution elements in the Chandra X-ray image. The straightness suggests that geometry factors, although uncertain, are almost constant along the jet. We assume the X-ray emission is from inverse Compton scattering of the cosmic microwave background. With the aid of assumptions about jet alignment, equipartition between magnetic-field and relativistic-particle energy, and filling factors, we find that the jet is in bulk relativistic motion with a Doppler factor 6 at an angle no more than 10 to the line of sight over de-projected distances 150600 kpc from the quasar, and with a magnetic field 10 Gauss.
KW - (Galaxies:) quasars: individual (4C 19.44, PKS 1354+135)
KW - Galaxies: jets
KW - X-rays
UR - http://www.scopus.com/inward/record.url?scp=37049028818&partnerID=8YFLogxK
U2 - 10.1017/S1743921307005868
DO - 10.1017/S1743921307005868
M3 - Article
AN - SCOPUS:37049028818
VL - 2
SP - 443
EP - 444
JO - Proceedings of the International Astronomical Union
JF - Proceedings of the International Astronomical Union
SN - 1743-9213
IS - S238
ER -
ID: 88374463