1 / 7

The Long, Bright Extended X-ray Jet of OJ287

The Long, Bright Extended X-ray Jet of OJ287. Alan Marscher & Svetlana Jorstad Boston University Research Web Page: www.bu.edu/blazars. Chandra Image of OJ287 (50 ks exposure). Comparison of X-ray (Chandra) and Radio (VLA) Jet.

pomona
Download Presentation

The Long, Bright Extended X-ray Jet of OJ287

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Long, Bright Extended X-ray Jet of OJ287 Alan Marscher & Svetlana Jorstad Boston University Research Web Page:www.bu.edu/blazars

  2. Chandra Image of OJ287 (50 ks exposure)

  3. Comparison of X-ray (Chandra) and Radio (VLA) Jet X-ray emission follows radio but extends beyond lowest VLA contour Readout streak 1 = 4.52 kpc Length of X-ray jet ~ 81 kpc in projection (before confusion with readout streak) Color: 0.2-6 keV Contours: 1.4 GHz

  4. Compact (VLBA) vs. Extended Jet VLBA • Kpc-scale jet consistent with continuation of pc-scale jet • pc scales: superluminal motion as high as 18c (Jorstad et al. 2005) • = 16.5±4.0, viewing angle = 3.2º±0.9º,  = 19±6 • Deprojected length of X-ray jet = 1.5±0.5 Mpc Radio/X-ray spectral index ~ 0.7 (we will have opt/ & IR fluxes)

  5. Luminosity of OJ287 Jet OJ287: length of X-ray jet > 1 Mpc L < 2x1024 watts/Hz at 1.4 GHz for region at end of jet (upper limit: no beaming)* • Upper range of FR 1 luminosity Extended (apparent) X-ray luminosity: 3x1042 erg/s * If there is a slower spine that decelerates with distance in OJ287, its 1.4 GHz luminosity is less than ~ 1024 watts/Hz

  6. Comparison with Extended Jets of other BL Lac Objects 2007+777 (z=0.342) (Sambruna et al. 2008) - similar, but not as high  PKS 0521-365 (z=0.0554) (Birkinshaw et al. 2002) - short jet 3C 371 (z=0.051) & PKS 2201+041 (z=0.027) (Sambruna et al. 2007) - few arcsecs long, resolved transverse to axis: Contours: radio (VLA) Color: X-ray (Chandra) 2201+041 3C 371

  7. Long, Fast FR 1 Jets Long (> 1 Mpc) jets with high : high- tail of population Rare in more local FR 1 radio galaxies Higher  jets have smaller opening angles (Jorstad et al. 2005) High  low entrainment, greater penetration into IGM without deceleration ***independent of whether FR 1 or FR 2 luminosity***

More Related