SIMBAD references

2005A&A...436..465R - Astronomy and Astrophysics, volume 436, 465-468 (2005/6-3)

The EUV variability of the luminous QSO HS 1700+6416.

REIMERS D., HAGEN H.-J., SCHRAMM J., KRISS G.A. and SHULL J.M.

Abstract (from CDS):

We report on the first observations of variations in UV (intrinsic EUV 330 Å) flux of the luminous QSO HS 1700+6416 (z=2.72) over a decade. The amplitude of variations increases from ±0.1 mag in the optical (R) to up to a factor of 3 at 1250Å. This is apparently an extension of the increase in amplitude of variations towards shorter wavelengths observed with IUE in low z AGN (Paltani & Courvoisier, 1996A&A...312...55P) to the EUV. The time-scale for variations with the largest amplitudes is ≥1/2yr to years. We briefly discuss the consequences of the observed variations on the ionizing metagalactic UV background.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: HS 1700+6416 - galaxies: quasars: general

Simbad objects: 6

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2005A&A...436..465R and select 'bookmark this link' or equivalent in the popup menu


2021.06.16-18:59:54

© Université de Strasbourg/CNRS

    • Contact