ASCA Observation of the Lensed Blazar PKS 1830-211: An Implication of X-Ray Microlensing

Details ASCA Observation of the Lensed Blazar PKS 1830-211: An Implication of X-Ray Microlensing ASCA Observation of the Lensed Blazar PKS 1830-211: An Implication of X-Ray Microlensing

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...551..929o&link_type=abstract

The Astrophysical Journal, Volume 551, Issue 2, pp. 929-933.

Astronomy and Astrophysics

Astronomy

16

Bl Lacertae Objects: Individual (Pks 1830-211), Cosmology: Gravitational Lensing, Galaxies: Quasars: General, X-Rays: Galaxies

Scientific paper

We present ASCA observations of the gravitationally lensed blazar PKS 1830-211. Intensity variations of about 10% and spectral variations were detected in the eight observations made at intervals of about 5 days. The spectral variations can be described by a change of absorption column density if we represent the spectrum with a single power-law model. However, it is more likely that the spectrum consists of two spectral components with different absorptions and that their intensity ratio varies. The column densities of the two components are consistent with the column densities of the two lensed images. However, the intensity ratio is different by a factor of 7.4 from the magnification ratio of the two lensed images. We suggest that the discrepancy is most likely due to X-ray microlensing, among several other possibilities. We estimate that the size of the X-ray emission region must be smaller than ~3×1014 cm in order to explain the observed microlensing magnification.

Affiliated with

Also associated with

No associations

Rating

ASCA Observation of the Lensed Blazar PKS 1830-211: An Implication of X-Ray Microlensing 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 ASCA Observation of the Lensed Blazar PKS 1830-211: An Implication of X-Ray Microlensing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ASCA Observation of the Lensed Blazar PKS 1830-211: An Implication of X-Ray Microlensing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1183841