a simple model for superluminal motion and state transition of microquasars
Download
Skip this Video
Download Presentation
A simple model for superluminal motion and state transition of microquasars

Loading in 2 Seconds...

play fullscreen
1 / 28

A simple model for superluminal motion and state transition of microquasars - PowerPoint PPT Presentation


  • 105 Views
  • Uploaded on

A simple model for superluminal motion and state transition of microquasars. Huazhong University of Science and technology. Gong Biping. Bulk motion. M. Rees 1966. Mirabel et al., 1994, Nature, 371, 46. XTE J1550-564 in 2000 and 2002. 2002, Science, 298, 196. GRS 1915+105

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' A simple model for superluminal motion and state transition of microquasars' - anneke


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
a simple model for superluminal motion and state transition of microquasars
A simple model for superluminal motion and state transition of microquasars

Huazhong University of Science and technology

Gong Biping

bulk motion
Bulk motion

M. Rees 1966

xte j1550 564 in 2000 and 2002
XTE J1550-564 in 2000 and 2002

2002, Science, 298, 196.

slide5

GRS 1915+105

in 1994 and 1997

2004, ARA&A, 42, 317.

position angle variation
Position angle variation

1999, ApJ, 511, 398.

difficult questions on slm
Difficult questions on SLM

(a) why the ratio of the displacement of the approaching blob to the receding blob is not a constant.

(b) why the receding jet appears later than the approaching jet in XTEJ1550-564 (for months) and GRS 1915+105 (for days).

(c) why deceleration appeared in XTE J1550-564 but not in GRS 1915+105.

(d) why the position angle changes 10 deg in 20-30 days in GRS 1915+105.

(e) why there is obvious oscillation in the receding blob.

(f) why 20% discrepancy in proper motion between the ejection of 1994 and 1997.

(g) why the size of condensations do not increase rapidly as expected from adiabatic expansion.

other possibility

Other possibility?

Bulk motion

precession

slide17

(a) why the ratio of the displacement of the approaching blob to the receding blob is not a constant.

is not a constant under precession model

It is a constant under bulk motion

slide18

(b) why the receding jet appears later than the approaching jet in XTEJ1550-564 .

slide20
(d) why the decrease in flux density with angular separation from the core on GRS 1915+105 is remarkably similar with that of SS 433.

(e) why 20% discrepancy in proper motion between the ejection of 1994 and 1997.

slide21

(f) why the position angle changes 10 deg in 20-30 days in GRS 1915+105.

(g) why there is obvious oscillation in the receding blob.

slide22

Observations which are difficult to understand

under the bulk motion scenario can be interpreted

by the jet precession model naturally.

summary

Summary

Simple

Unified

Easy to test

ad