The calculation of the ratios of intensities and the intrinsic redshifts of cerenkov iron K? and K? lines and its possible application in the researches towards active galactic nuclei

Details The calculation of the ratios of intensities and the intrinsic redshifts of cerenkov iron K? and K? lines and its possible application in the researches towards active galactic nuclei The calculation of the ratios of intensities and the intrinsic redshifts of cerenkov iron K? and K? lines and its possible application in the researches towards active galactic nuclei

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007acasn..48..269l&link_type=abstract

Acta Astronomica Sinica, vol. 48, no. 3, p. 269-279

Physics

Radiation Mechanism: General, Line: Formation, X-Rays: Galaxies, Galaxies: Seyfert, Quasars: General, Black Hole Physics

Scientific paper

We mentioned that, when the thermal relativistic electrons with isotropic distribution of velocities move through a dense gas region, or impinge upon the surface of a cloud of dense gas, the Cerenkov effect will produce peculiar atomic or ionic emission lines, which we call the `Cerenkov line-like radiation'. This prediction has been verified by the laboratory experiments in the optical waveband. In this paper, we present the basic formula for calculating the intensity ratio and the intrinsic redshift ratio of the Cerenkov iron K? and K? lines.Using these formulae, we calculate the intensity ratios and the redshift ratios of the Cerenkov iron K? and K? lines for different valences of iron ions, which can be examined by the observations of AGNs. The recent observations show that, except for the iron K? line at ~ 6.4keV, there is also an apparent iron K? line at~7.0keV in NGC 3783 with intensity markedly higher than the predicted one by the traditional fluorescence emission.We argue that, the Cerenkov line-like radiation can provide a way to solve the puzzle of the observed anomalous ratio of the equivalent widths EW K?/EW K??3.43, which is difficult to understand from the conventional `photoelectric absorption-fluorescence emission' mechanism. Besides, we expected that the intrinsic redshift ratio of the Cerenkov iron K? and K? lines could be verified in future observations. If our suggestion is further supported by observations, the conventional scenario around the central super massive black hole of AGNs would need to be modified to accommodate more energetic, more violent and much denser environment than previously thought.

Affiliated with

Also associated with

No associations

Rating

The calculation of the ratios of intensities and the intrinsic redshifts of cerenkov iron K? and K? lines and its possible application in the researches towards active galactic nuclei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The calculation of the ratios of intensities and the intrinsic redshifts of cerenkov iron K? and K? lines and its possible application in the researches towards active galactic nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The calculation of the ratios of intensities and the intrinsic redshifts of cerenkov iron K? and K? lines and its possible application in the researches towards active galactic nuclei will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1028536