Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Kundic, Tomislav"'
Autor:
Wambsganss, Joachim, Schmidt, Robert W., Colley, Wesley N., Kundic, Tomislav, Turner, Edwin L.
If the halo of the lensing galaxy 0957+561 is made of massive compact objects (MACHOs), they must affect the lightcurves of the quasar images Q0957+561 A and B differently. We search for this microlensing effect in the double quasar by comparing moni
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010232
In order to use a gravitational lens to measure the Hubble constant accurately, it is necessary to derive a reliable model of the lens surface potential. If the analysis is restricted to the locations and magnifications of point images, the derived H
Externí odkaz:
http://arxiv.org/abs/astro-ph/0001496
Autor:
Kundic, Tomislav, Hogg, David W., Blandford, Roger D., Cohen, Judith G., Lubin, Lori M., Larkin, James E.
In a number of multiply imaged quasar systems, a significant contribution to the lensing potential is provided by groups and clusters of galaxies associated with the primary lens. As part of an ongoing effort to gather observational data on these sys
Externí odkaz:
http://arxiv.org/abs/astro-ph/9706169
The quadruple system PG 1115+080 is the second gravitational lens with a reported measurement of the Hubble constant. In addition to the primary lens, three nearby galaxies are believed to contribute significantly to the lensing potential. In this pa
Externí odkaz:
http://arxiv.org/abs/astro-ph/9704109
Autor:
Blandford, Roger D., Kundic, Tomislav
The potential of gravitational lenses for providing direct, physical measurements of the Hubble constant, free from systematic errors associated with the traditional distance ladder, has long been recognized. However, it is only recently that there h
Externí odkaz:
http://arxiv.org/abs/astro-ph/9611229
Autor:
Kundic, Tomislav, Turner, Edwin L., Colley, Wesley N., Gott, III, J. Richard, Rhoads, James E., Wang, Yun, Bergeron, Louis E., Gloria, Karen A., Long, Daniel C., Malhotra, Sangeeta, Wambsganss, Joachim
Publikováno v:
Astrophys.J. 482 (1997) 75
Photometric monitoring of the gravitational lens system 0957+561A,B in the g and r bands with the Apache Point Observatory (APO) 3.5 m telescope during 1996 shows a sharp g band event in the trailing (B) image light curve at the precise time predicte
Externí odkaz:
http://arxiv.org/abs/astro-ph/9610162
The discovery of HDF~J123652+621227, a candidate gravitational lens in the HDF, is reported. This lens may be multiply imaging several optical sources at different redshifts. If follow-up spectroscopy of the lens and the brightest image confirms this
Externí odkaz:
http://arxiv.org/abs/astro-ph/9604111
We report the detection of a very red source coincident with the gravitational lens 1938+66.6 (Patnaik et al. 1992) in K' (2.12 micron), H (1.6 micron), J (1.25 micron), and Thuan-Gunn r (0.65 micron) bands. 1938+66.6 has previously been detected as
Externí odkaz:
http://arxiv.org/abs/astro-ph/9601184
Autor:
Wambsganss, Joachim, Kundic, Tomislav
Publikováno v:
Astrophys.J. 450 (1995) 19
We present a quantitative analysis of the effect of microlensing caused by random motion of individual stars in the galaxy which is lensing a background quasar. We calculate a large number of magnification patterns for positions of the stars slightly
Externí odkaz:
http://arxiv.org/abs/astro-ph/9503035
Publikováno v:
AIP Conference Proceedings; Jun1992, Vol. 278 Issue 1, p592-595, 4p
