Constraints on Quasar Lifetimes and Beaming from the He II Lyα Forest, Furlanetto, Steven R.,Lidz, Adam, The Astrophysical Journal, 735, 2011-07-01 00:00:00, 2011ApJ...735..117F||Dating individual quasars with the He II proximity effect, Worseck, Gábor,Khrykin, Ilya S.,Hennawi, Joseph F., Monthly Notices of the Royal Astronomical Society, 505, 2021-08-01 00:00:00, 2021MNRAS.505.5084W||Early and Extended Helium Reionization over More Than 600 Million Years of Cosmic Time, Worseck, Gábor,Prochaska, J. Xavier,Hennawi, Joseph F., The Astrophysical Journal, 825, 2016-07-01 00:00:00, 2016ApJ...825..144W||He II Lyα Transmission Spikes and Absorption Troughs in Eight High-resolution Spectra Probing the End of He II Reionization, Makan, Kirill,Worseck, Gábor,Davies, Frederick B., The Astrophysical Journal, 927, 2022-03-01 00:00:00, 2022ApJ...927..175M||He II Lyβ Gunn-Peterson Absorption: New HST Observations and Theoretical Expectations, Syphers, David,Anderson, Scott F.,Zheng, Wei, The Astrophysical Journal, 742, 2011-12-01 00:00:00, 2011ApJ...742...99S||HST/COS Observations of the Quasar HE 2347-4342: Probing the Epoch of He II Patchy Reionization at Redshifts z = 2.4-2.9, Shull, J. Michael,France, Kevin,Danforth, Charles W., The Astrophysical Journal, 722, 2010-10-01 00:00:00, 2010ApJ...722.1312S||Hubble/COS Observations of the Lyα Forest Toward the BL Lac Object 1ES 1553+113, Danforth, Charles W.,Keeney, Brian A.,Stocke, John T., The Astrophysical Journal, 720, 2010-09-01 00:00:00, 2010ApJ...720..976D||Probing inhomogeneity in the helium ionizing UV background, Morrison, Sean,Pieri, Matthew M.,Syphers, David, Monthly Notices of the Royal Astronomical Society, 489, 2019-10-01 00:00:00, 2019MNRAS.489..868M||Statistical Detection of the He II Transverse Proximity Effect: Evidence for Sustained Quasar Activity for >25 Million Years, Schmidt, Tobias M.,Worseck, Gabor,Hennawi, Joseph F., The Astrophysical Journal, 847, 2017-...09-01 00:00:00, 2017ApJ...847...81S||SuperBoRG: Exploration of Point Sources at z ∼ 8 in HST Parallel Fields, Morishita, Takahiro,Stiavelli, M.,Trenti, M., The Astrophysical Journal, 904, 2020-11-01 00:00:00, 2020ApJ...904...50M||SuperBoRG: Search for the Brightest of Reionizing Galaxies and Quasars in HST Parallel Imaging Data, Morishita, T., The Astrophysical Journal Supplement Series, 253, 2021-03-01 00:00:00, 2021ApJS..253....4M||The Brightest of Reionizing Galaxies Survey: Constraints on the Bright End of the z ~ 8 Luminosity Function, Bradley, L. D.,Trenti, M.,Oesch, P. A., The Astrophysical Journal, 760, 2012-12-01 00:00:00, 2012ApJ...760..108B||The case against large intensity fluctuations in the z ∼ 2.5 He II Lyα forest, McQuinn, Matthew,Worseck, Gabor, Monthly Notices of the Royal Astronomical Society, 440, 2014-05-01 00:00:00, 2014MNRAS.440.2406M||The End of Helium Reionization at z ~= 2.7 Inferred from Cosmic Variance in HST/COS He II Lyα Absorption Spectra, Worseck, Gábor,Prochaska, J. Xavier,McQuinn, Matthew, The Astrophysical Journal, 733, 2011-06-01 00:00:00, 2011ApJ...733L..24W||The Evolution of the He II-ionizing Background at Redshifts 2.3 < z < 3.8 Inferred from a Statistical Sample of 24 HST/COS He II Lyα Absorption Spectra, Worseck, Gábor,Davies, Frederick B.,Hennawi, Joseph F., The Astrophysical Journal, 875, 2019-04-01 00:00:00, 2019ApJ...875..111W||The Extreme Ultraviolet Variability of Quasars, Punsly, Brian,Marziani, Paola,Zhang, Shaohua, The Astrophysical Journal, 830, 2016-10-01 00:00:00, 2016ApJ...830..104P||The He II Post-reionization Epoch: HST/COS Observations of the Quasar HS1700+6416, Syphers, David,Shull, J. Michael, The Astrophysical Journal, 765, 2013-03-01 00:00:00, 2013ApJ...765..119S||The He II Proximity Effect and The Lifetime of Quasars, Khrykin, I. S.,Hennawi, J. F.,McQuinn, M., The Astrophysical Journal, 824, 2016-06-01 00:00:00, 2016ApJ...824..133K||The Super Eight Galaxies: Properties of a Sample of Very Bright Galaxies at 7 < z < 8, Bridge, Joanna S.,Holwerda, Benne W.,Stefanon, Mauro, The Astrophysical Journal, 882, 2019-09-01 00:00:00, 2019ApJ...882...42B
Instrument
COS/FUV, COS/NUV, WFC3, WFC3/IR, WFC3/UVIS
Temporal Coverage
2009-11-05T00:36:37Z/2011-10-10T07:09:32Z
Version
1.0
Mission Description
Launched in 1990, the NASA/ESA Hubble Space Telescope remains the premier UV and visible light telescope in orbit. With well over 1.6 million observations from 10 different scientific instruments, the ESA Hubble Science Archive is a treasure trove of astronomical data to be exploited.
