The relation between the long-term X-ray and optical activity of the polar AM Her (RX J1816.2 + 4952)

Details The relation between the long-term X-ray and optical activity of the polar AM Her (RX J1816.2 + 4952) The relation between the long-term X-ray and optical activity of the polar AM Her (RX J1816.2 + 4952)

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011newa...16..405s&link_type=abstract

New Astronomy, Volume 16, Issue 6, p. 405-411.

Astronomy and Astrophysics

Astronomy

Scientific paper

We analyze the relation between the long-term (1996-2009) activity of the polar AM Her in the optical and hard X-ray spectral regions. We investigate the mean values of the intensities in the individual high-state episodes. We made use of the ASM/RXTE observations for a time-series analysis of the long-term variations in the 1.5-12 keV band. The optical data came from the AFOEV database. We reveal a complicated relation between the optical (IO) and hard X-ray intensity (IX). We argue that our observations cannot be explained by the variations of the orbital modulation in the high-state. Also, the precession of the spin axis of the white dwarf or asynchronous rotation of this object are unlikely in our case. We show that the basic properties of the emitting region (s) is (are) established in the early phase (several days long) of the high-state episode but they are not reproduced for every episode. The increase of the mass transfer rate from the donor that switches the polar from the low to the high-state also establishes a division of the emission released during the accretion process into various spectral regions that is valid only for a given episode. These results enable us a better understanding of the multifrequency behavior of polars on long time-scales.

Affiliated with

Also associated with

No associations

Rating

The relation between the long-term X-ray and optical activity of the polar AM Her (RX J1816.2 + 4952) 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 relation between the long-term X-ray and optical activity of the polar AM Her (RX J1816.2 + 4952), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The relation between the long-term X-ray and optical activity of the polar AM Her (RX J1816.2 + 4952) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1672343