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pro vyhledávání: '"Haarsma, Deborah"'
Autor:
Haarsma, Deborah Joy Becker
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1997.
Includes bibliographical references (p. 241-246).
by Deborah Joy Becker Haarsma.
Ph.D.
Includes bibliographical references (p. 241-246).
by Deborah Joy Becker Haarsma.
Ph.D.
Externí odkaz:
http://hdl.handle.net/1721.1/42618
Autor:
Donahue, Megan, Bruch, Seth, Wang, Emily, Voit, G. Mark, Hicks, Amalia K., Haarsma, Deborah B., Croston, Judith H., Pratt, Gabriel W., Pierini, Daniele, O'Connell, Robert W., Boehringer, Hans
We present UV broadband photometry and optical emission-line measurements for a sample of 32 Brightest Cluster Galaxies (BCGs) in clusters of the Representative XMM-Newton Cluster Structure Survey (REXCESS) with z = 0.06-0.18. The REXCESS clusters, c
Externí odkaz:
http://arxiv.org/abs/1004.0529
Publikováno v:
Astronomical Journal 135, 984 (2008)
In 1981, a faint radio source (G') was detected near the center of the lensing galaxy of the famous "twin quasar" Q0957+561. It is still unknown whether this central radio source is a third quasar image or an active nucleus of the lensing galaxy, or
Externí odkaz:
http://arxiv.org/abs/0801.3952
Time-delay measurements of 0957+561 based on radio monitoring now agree with optical monitoring. Recent models incorporate many recent observations, but the systematic uncertainties in the models still dominate the uncertainty in the cosmological res
Externí odkaz:
http://arxiv.org/abs/astro-ph/0008326
Publikováno v:
Astrophys.J. 544 (2000) 641-658
Faint extragalactic radio sources provide important information about the global history of star formation. Sensitive radio observations of the Hubble Deep Field and other fields have found that sub-mJy radio sources are predominantly associated with
Externí odkaz:
http://arxiv.org/abs/astro-ph/9904036
The gravitational lens 0957+561 was monitored with the Very Large Array from 1979 to 1997. The 6 cm light curve data from 1995-1997 and the 4 cm data from 1990-1997 are reported here. At 4 cm, the intrinsic source variations occur earlier and are twi
Externí odkaz:
http://arxiv.org/abs/astro-ph/9807115
We report on 15 years of VLA monitoring of the gravitational lens B0957+561 at 6 cm. Since our last report in 1992, there have been 32 additional observations, in which both images have returned to their quiescent flux density levels and the A image
Externí odkaz:
http://arxiv.org/abs/astro-ph/9607080
Publikováno v:
Christian Higher Education. Jan-Apr2019, Vol. 18 Issue 1/2, p111-124. 14p.
Publikováno v:
In New Astronomy Reviews 2002 46(2):303-306