A New Precision Measurement of the Small-scale Line-of-sight Power Spectrum of the Ly α Forest
Abstract
We present a new measurement of the Lyα forest power spectrum at 1.8 < z < 3.4 using 74 Keck/HIRES and VLT/UVES high-resolution, high-signal-to-noise-ratio quasar spectra. We developed a custom pipeline to measure the power spectrum and its uncertainty, which fully accounts for finite resolution and noise and corrects for the bias induced by masking missing data, damped Lyα absorption systems, and metal absorption lines. Our measurement results in unprecedented precision on the small-scale modes $$k\gt 0.02\,{\rm{s}}\,{\mathrm{km}}^{-1}$$, inaccessible to previous SDSS/BOSS analyses. It is well known that these high-k modes are highly sensitive to the thermal state of the intergalactic medium, but contamination by narrow metal lines is a significant concern. We quantify the effect of metals on the small-scale power and find a modest effect on modes with $$k\lt 0.1\,{\rm{s}}\,{\mathrm{km}}^{-1}$$. As a result, by masking metals and restricting to $$k\lt 0.1\,{\rm{s}}\,{\mathrm{km}}^{-1}$$, their impact is completely mitigated. We present an end-to-end Bayesian forward-modeling framework whereby mock spectra with the same noise, resolution, and masking as our data are generated from Lyα forest simulations. These mock spectra are used to build a custom emulator, enabling us to interpolate between a sparse grid of models and perform Markov chain Monte Carlo fits. Our results agree well with BOSS on scales $$k\lt 0.02\,{\rm{s}}\,{\mathrm{km}}^{-1}$$, where the measurements overlap. The combination of the percent-level low-k precision of BOSS with our 5%–15% high-k measurements results in a powerful new data set for precisely constraining the thermal history of the intergalactic medium, cosmological parameters, and the nature of dark matter. Lastly, the power spectra and their covariance matrices are provided as electronic tables.
- Authors:
-
[1];
[2];
[3];
[4];
[5];
[6];
[7]
- Univ. of California, Santa Barbara, CA (United States). Physics Dept.; Max-Planck-Inst. fur Astronomie, Heidelberg (Germany); Univ. of Heidelberg (Germany). International Max Planck Research School for Astronomy & Cosmic Physics
- Univ. of California, Santa Barbara, CA (United States). Physics Dept.; Max Planck Inst. fur Astronomie, Heidelberg (Germany)
- Max Planck Inst. fur Astronomie, Heidelberg (Germany); Univ. of Heidelberg (Germany). International Max Planck Research School for Astronomy & Cosmic Physics
- Max Planck Inst. fur Astronomie, Heidelberg (Germany)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Cambridge Inst. of Astronomy, Cambridge (United Kingdom)
- Saint Michael's College, Colchester, VT (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Aeronautics and Space Administration (NASA); National Science Foundation (NSF)
- OSTI Identifier:
- 1524339
- Grant/Contract Number:
- AC02-05CH11231; NNX10AE84G; NNx16AF52G
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 852; Journal Issue: 1; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Walther, Michael, Hennawi, Joseph F., Hiss, Hector, Oñorbe, Jose, Lee, Khee-Gan, Rorai, Alberto, and O’Meara, John. A New Precision Measurement of the Small-scale Line-of-sight Power Spectrum of the Ly α Forest. United States: N. p., 2017.
Web. doi:10.3847/1538-4357/aa9c81.
Walther, Michael, Hennawi, Joseph F., Hiss, Hector, Oñorbe, Jose, Lee, Khee-Gan, Rorai, Alberto, & O’Meara, John. A New Precision Measurement of the Small-scale Line-of-sight Power Spectrum of the Ly α Forest. United States. https://doi.org/10.3847/1538-4357/aa9c81
Walther, Michael, Hennawi, Joseph F., Hiss, Hector, Oñorbe, Jose, Lee, Khee-Gan, Rorai, Alberto, and O’Meara, John. Thu .
"A New Precision Measurement of the Small-scale Line-of-sight Power Spectrum of the Ly α Forest". United States. https://doi.org/10.3847/1538-4357/aa9c81. https://www.osti.gov/servlets/purl/1524339.
@article{osti_1524339,
title = {A New Precision Measurement of the Small-scale Line-of-sight Power Spectrum of the Ly α Forest},
author = {Walther, Michael and Hennawi, Joseph F. and Hiss, Hector and Oñorbe, Jose and Lee, Khee-Gan and Rorai, Alberto and O’Meara, John},
abstractNote = {We present a new measurement of the Lyα forest power spectrum at 1.8 < z < 3.4 using 74 Keck/HIRES and VLT/UVES high-resolution, high-signal-to-noise-ratio quasar spectra. We developed a custom pipeline to measure the power spectrum and its uncertainty, which fully accounts for finite resolution and noise and corrects for the bias induced by masking missing data, damped Lyα absorption systems, and metal absorption lines. Our measurement results in unprecedented precision on the small-scale modes $k\gt 0.02\,{\rm{s}}\,{\mathrm{km}}^{-1}$, inaccessible to previous SDSS/BOSS analyses. It is well known that these high-k modes are highly sensitive to the thermal state of the intergalactic medium, but contamination by narrow metal lines is a significant concern. We quantify the effect of metals on the small-scale power and find a modest effect on modes with $k\lt 0.1\,{\rm{s}}\,{\mathrm{km}}^{-1}$. As a result, by masking metals and restricting to $k\lt 0.1\,{\rm{s}}\,{\mathrm{km}}^{-1}$, their impact is completely mitigated. We present an end-to-end Bayesian forward-modeling framework whereby mock spectra with the same noise, resolution, and masking as our data are generated from Lyα forest simulations. These mock spectra are used to build a custom emulator, enabling us to interpolate between a sparse grid of models and perform Markov chain Monte Carlo fits. Our results agree well with BOSS on scales $k\lt 0.02\,{\rm{s}}\,{\mathrm{km}}^{-1}$, where the measurements overlap. The combination of the percent-level low-k precision of BOSS with our 5%–15% high-k measurements results in a powerful new data set for precisely constraining the thermal history of the intergalactic medium, cosmological parameters, and the nature of dark matter. Lastly, the power spectra and their covariance matrices are provided as electronic tables.},
doi = {10.3847/1538-4357/aa9c81},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 852,
place = {United States},
year = {Thu Dec 28 00:00:00 EST 2017},
month = {Thu Dec 28 00:00:00 EST 2017}
}
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Figures / Tables:
Table 1: UVES Spectra from Dall’Aglio et al. (2008) Used for Our Analysis
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Works referenced in this record:
The intergalactic medium thermal history at redshift z = 1.7-3.2 from the Lyα forest: a comparison of measurements using wavelets and the flux distribution : The IGM thermal history at
journal, July 2012
- Garzilli, A.; Bolton, J. S.; Kim, T. -S.
- Monthly Notices of the Royal Astronomical Society, Vol. 424, Issue 3
On the contribution of active galactic nuclei to the high-redshift metagalactic ionizing background
journal, March 2017
- D'Aloisio, Anson; Upton Sanderbeck, Phoebe R.; McQuinn, Matthew
- Monthly Notices of the Royal Astronomical Society, Vol. 468, Issue 4
The photoheating of the intergalactic medium in synthesis models of the UV background
journal, May 2015
- Puchwein, Ewald; Bolton, James S.; Haehnelt, Martin G.
- Monthly Notices of the Royal Astronomical Society, Vol. 450, Issue 4
Design, construction, and performance of UVES, the echelle spectrograph for the UT2 Kueyen Telescope at the ESO Paranal Observatory
conference, August 2000
- Dekker, Hans; D'Odorico, Sandro; Kaufer, Andreas
- Astronomical Telescopes and Instrumentation, SPIE Proceedings
Possible evidence for an inverted temperature–density relation in the intergalactic medium from the flux distribution of the Lyα forest
journal, May 2008
- Bolton, J. S.; Viel, M.; Kim, T. -S.
- Monthly Notices of the Royal Astronomical Society, Vol. 386, Issue 2
The Power Spectrum of Mass Fluctuations Measured from the Lyα Forest at Redshift z = 2.5
journal, July 1999
- Croft, Rupert A. C.; Weinberg, David H.; Pettini, Max
- The Astrophysical Journal, Vol. 520, Issue 1
The Second Data Release of the KODIAQ Survey
journal, August 2017
- O’Meara, J. M.; Lehner, N.; Howk, J. C.
- The Astronomical Journal, Vol. 154, Issue 3
XQ-100: A legacy survey of one hundred 3.5 ≲ z ≲ 4.5 quasars observed with VLT/X-shooter
journal, October 2016
- López, S.; D’Odorico, V.; Ellison, S. L.
- Astronomy & Astrophysics, Vol. 594
The igmspec database of public spectra probing the intergalactic medium
journal, April 2017
- Prochaska, J. X.
- Astronomy and Computing, Vol. 19
Models of the thermal evolution of the intergalactic medium after reionization
journal, May 2016
- Upton Sanderbeck, Phoebe R.; D'Aloisio, Anson; McQuinn, Matthew J.
- Monthly Notices of the Royal Astronomical Society, Vol. 460, Issue 2
The redshift evolution of escape fraction of hydrogen ionizing photons from galaxies
journal, February 2016
- Khaire, Vikram; Srianand, Raghunathan; Choudhury, Tirthankar Roy
- Monthly Notices of the Royal Astronomical Society, Vol. 457, Issue 4
Evolution of the Intergalactic Opacity: Implications for the Ionizing Background, Cosmic Star Formation, and Quasar Activity
journal, November 2008
- Faucher‐Giguère, Claude‐André; Lidz, Adam; Hernquist, Lars
- The Astrophysical Journal, Vol. 688, Issue 1
The Lyman-alpha forest power spectrum from the XQ-100 Legacy Survey
journal, December 2016
- Iršič, Vid; Viel, Matteo; Berg, Trystyn A. M.
- Monthly Notices of the Royal Astronomical Society
Planck 2013 results. XVI. Cosmological parameters
journal, October 2014
- Ade, P. A. R.; Aghanim, N.; Armitage-Caplan, C.
- Astronomy & Astrophysics, Vol. 571
First Constraints on Fuzzy Dark Matter from Lyman- Forest Data and Hydrodynamical Simulations
journal, July 2017
- Iršič, Vid; Viel, Matteo; Haehnelt, Martin G.
- Physical Review Letters, Vol. 119, Issue 3
The Observed Probability Distribution Function, Power Spectrum, and Correlation Function of the Transmitted Flux in the Lyα Forest
journal, November 2000
- McDonald, Patrick; Miralda‐Escude, Jordi; Rauch, Michael
- The Astrophysical Journal, Vol. 543, Issue 1
A deep search for metals near redshift 7: the line of sight towards ULAS J1120+0641
journal, May 2017
- Bosman, Sarah E. I.; Becker, George D.; Haehnelt, Martin G.
- Monthly Notices of the Royal Astronomical Society, Vol. 470, Issue 2
Planck 2015 results : XIII. Cosmological parameters
journal, September 2016
- Ade, P. A. R.; Aghanim, N.; Arnaud, M.
- Astronomy & Astrophysics, Vol. 594
The Lyα Forest Power Spectrum from the Sloan Digital Sky Survey
journal, March 2006
- McDonald, Patrick; Seljak, Uroš; Burles, Scott
- The Astrophysical Journal Supplement Series, Vol. 163, Issue 1
Faint AGNs at z > 4 in the CANDELS GOODS-S field: looking for contributors to the reionization of the Universe
journal, June 2015
- Giallongo, E.; Grazian, A.; Fiore, F.
- Astronomy & Astrophysics, Vol. 578
Intergalactic Lyman continuum photon budget in the past 5 billion years
journal, November 2016
- Gaikwad, Prakash; Khaire, Vikram; Choudhury, Tirthankar Roy
- Monthly Notices of the Royal Astronomical Society, Vol. 466, Issue 1
Constraining the temperature–density relation of the intergalactic medium with the Lyman α and β forests
journal, December 2015
- Boera, Elisa; Murphy, Michael T.; Becker, George D.
- Monthly Notices of the Royal Astronomical Society: Letters, Vol. 456, Issue 1
Studies in astronomical time series analysis. II - Statistical aspects of spectral analysis of unevenly spaced data
journal, December 1982
- Scargle, J. D.
- The Astrophysical Journal, Vol. 263
Temperature fluctuations in the intergalactic medium
journal, May 2002
- Theuns, Tom; Zaroubi, Saleem; Kim, Tae-Sun
- Monthly Notices of the Royal Astronomical Society, Vol. 332, Issue 2
Physical effects on the Lyα forest flux power spectrum: damping wings, ionizing radiation fluctuations and galactic winds
journal, July 2005
- McDonald, Patrick; Seljak, Uroš; Cen, Renyue
- Monthly Notices of the Royal Astronomical Society, Vol. 360, Issue 4
An unbiased measurement of the UV background and its evolution via the proximity effect in quasar spectra
journal, October 2008
- Dall'Aglio, A.; Wisotzki, L.; Worseck, G.
- Astronomy & Astrophysics, Vol. 491, Issue 2
Constraints on neutrino masses from Lyman-alpha forest power spectrum with BOSS and XQ-100
journal, June 2017
- Yèche, Christophe; Palanque-Delabrouille, Nathalie; Baur, Julien
- Journal of Cosmology and Astroparticle Physics, Vol. 2017, Issue 06
The H i opacity of the intergalactic medium at redshifts 1.6 < z < 3.2
journal, July 2005
- Kirkman, David; Tytler, David; Suzuki, Nao
- Monthly Notices of the Royal Astronomical Society, Vol. 360, Issue 4
A Measurement of the Temperature‐Density Relation in the Intergalactic Medium Using a New Lyα Absorption‐Line Fitting Method
journal, November 2001
- McDonald, Patrick; Miralda‐Escude, Jordi; Rauch, Michael
- The Astrophysical Journal, Vol. 562, Issue 1
Probing the thermal history of the intergalactic medium with Ly absorption lines
journal, July 1998
- Haehnelt, M. G.; Steinmetz, M.
- Monthly Notices of the Royal Astronomical Society, Vol. 298, Issue 1
How Cold Is Cold Dark Matter? Small-Scales Constraints from the Flux Power Spectrum of the High-Redshift Lyman- Forest
journal, January 2008
- Viel, Matteo; Becker, George D.; Bolton, James S.
- Physical Review Letters, Vol. 100, Issue 4
The Absorption-Line Spectrum of 4c 05.34
journal, March 1971
- Lynds, Roger
- The Astrophysical Journal, Vol. 164
Large fluctuations in the hydrogen-ionizing background and mean free path following the epoch of reionization
journal, April 2016
- Davies, Frederick B.; Furlanetto, Steven R.
- Monthly Notices of the Royal Astronomical Society, Vol. 460, Issue 2
Self-consistent Modeling of Reionization in Cosmological Hydrodynamical Simulations
journal, March 2017
- Oñorbe, Jose; Hennawi, Joseph F.; Lukić, Zarija
- The Astrophysical Journal, Vol. 837, Issue 2
Recovery of the Power Spectrum of Mass Fluctuations from Observations of the Lyα Forest
journal, March 1998
- Croft, Rupert A. C.; Weinberg, David H.; Katz, Neal
- The Astrophysical Journal, Vol. 495, Issue 1
Linear Gas Dynamics in the Expanding Universe
journal, February 2003
- Gnedin, Nickolay Y.; Baker, Emily J.; Bethell, Thomas J.
- The Astrophysical Journal, Vol. 583, Issue 2
The History and Morphology of Helium Reionization
journal, July 2008
- Furlanetto, Steven R.; Oh, S. Peng
- The Astrophysical Journal, Vol. 681, Issue 1
The power spectrum of the flux distribution in the Lyman forest of a large sample of UVES QSO absorption spectra (LUQAS)
journal, January 2004
- Kim, T. - S.; Viel, M.; Haehnelt, M. G.
- Monthly Notices of the Royal Astronomical Society, Vol. 347, Issue 2
NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE ( WMAP ) OBSERVATIONS: COSMOLOGICAL PARAMETER RESULTS
journal, September 2013
- Hinshaw, G.; Larson, D.; Komatsu, E.
- The Astrophysical Journal Supplement Series, Vol. 208, Issue 2
Planck intermediate results : XLVII.
journal, December 2016
- Adam, R.; Aghanim, N.; Ashdown, M.
- Astronomy & Astrophysics, Vol. 596
Detection of extended He ii reionization in the temperature evolution of the intergalactic medium★: IGM temperatures over 2 < z < 5
journal, November 2010
- Becker, George D.; Bolton, James S.; Haehnelt, Martin G.
- Monthly Notices of the Royal Astronomical Society, Vol. 410, Issue 2
Equation of state of the photoionized intergalactic medium
journal, November 1997
- Hui, L.; Gnedin, N. Y.
- Monthly Notices of the Royal Astronomical Society, Vol. 292, Issue 1
Probing the Universe with the Ly forest -- I. Hydrodynamics of the low-density intergalactic medium
journal, May 1998
- Gnedin, N. Y.; Hui, L.
- Monthly Notices of the Royal Astronomical Society, Vol. 296, Issue 1
A refined measurement of the mean transmitted flux in the Lyα forest over 2 < z < 5 using composite quasar spectra
journal, February 2013
- Becker, George D.; Hewett, Paul C.; Worseck, Gábor
- Monthly Notices of the Royal Astronomical Society, Vol. 430, Issue 3
Ensemble samplers with affine invariance
journal, January 2010
- Goodman, Jonathan; Weare, Jonathan
- Communications in Applied Mathematics and Computational Science, Vol. 5, Issue 1
Particle-mesh simulations of the Ly forest
journal, June 2001
- Meiksin, A.; White, M.
- Monthly Notices of the Royal Astronomical Society, Vol. 324, Issue 1
Exploring the thermal state of the low-density intergalactic medium at z = 3 with an ultrahigh signal-to-noise QSO spectrum
journal, November 2016
- Rorai, A.; Becker, G. D.; Haehnelt, M. G.
- Monthly Notices of the Royal Astronomical Society, Vol. 466, Issue 3
On the intergalactic temperature–density relation
journal, December 2015
- McQuinn, Matthew; Upton Sanderbeck, Phoebe R.
- Monthly Notices of the Royal Astronomical Society, Vol. 456, Issue 1
Measurement of the small-scale structure of the intergalactic medium using close quasar pairs
journal, April 2017
- Rorai, Alberto; Hennawi, Joseph F.; Oñorbe, Jose
- Science, Vol. 356, Issue 6336
The thermal history of the intergalactic medium
journal, November 2000
- Schaye, Joop; Theuns, Tom; Rauch, Michael
- Monthly Notices of the Royal Astronomical Society, Vol. 318, Issue 3
Tightening Constraints from the Lyα Forest with the Flux Probability Distribution Function
journal, February 2006
- Lidz, Adam; Heitmann, Katrin; Hui, Lam
- The Astrophysical Journal, Vol. 638, Issue 1
Cosmic Calibration
journal, July 2006
- Heitmann, Katrin; Higdon, David; Nakhleh, Charles
- The Astrophysical Journal, Vol. 646, Issue 1
MEAN-FLUX-REGULATED PRINCIPAL COMPONENT ANALYSIS CONTINUUM FITTING OF SLOAN DIGITAL SKY SURVEY Lyα FOREST SPECTRA
journal, January 2012
- Lee, Khee-Gan; Suzuki, Nao; Spergel, David N.
- The Astronomical Journal, Vol. 143, Issue 2
The systematic search for z ≳ 5 active galactic nuclei in the Chandra Deep Field South
journal, March 2015
- Weigel, Anna K.; Schawinski, Kevin; Treister, Ezequiel
- Monthly Notices of the Royal Astronomical Society, Vol. 448, Issue 4
The Lyman α forest in a blazar-heated Universe: Lyman α forest in a blazar-heated Universe
journal, May 2012
- Puchwein, Ewald; Pfrommer, Christoph; Springel, Volker
- Monthly Notices of the Royal Astronomical Society, Vol. 423, Issue 1
emcee : The MCMC Hammer
journal, March 2013
- Foreman-Mackey, Daniel; Hogg, David W.; Lang, Dustin
- Publications of the Astronomical Society of the Pacific, Vol. 125, Issue 925
Constraints from the Lyα Forest Power Spectrum
journal, August 2001
- Zaldarriaga, Matias; Hui, Lam; Tegmark, Max
- The Astrophysical Journal, Vol. 557, Issue 2
The First data Release of the Kodiaq Survey
journal, September 2015
- O’Meara, J. M.; Lehner, N.; Howk, J. C.
- The Astronomical Journal, Vol. 150, Issue 4
The b Distribution of the Lyα Forest: Probing Cosmology and the Intergalactic Medium
journal, May 2000
- Bryan, Greg L.; Machacek, Marie E.
- The Astrophysical Journal, Vol. 534, Issue 1
He II REIONIZATION AND ITS EFFECT ON THE INTERGALACTIC MEDIUM
journal, March 2009
- McQuinn, Matthew; Lidz, Adam; Zaldarriaga, Matias
- The Astrophysical Journal, Vol. 694, Issue 2
A Direct Precision Measurement of the Intergalactic Lyα Opacity at 2 ≤ z ≤ 4.2
journal, July 2008
- Faucher‐Giguère, Claude‐André; Prochaska, Jason X.; Lidz, Adam
- The Astrophysical Journal, Vol. 681, Issue 2
The Evolution of the Effective Equation of State of the Intergalactic Medium
journal, May 2000
- Ricotti, Massimo; Gnedin, Nickolay Y.; Shull, J. Michael
- The Astrophysical Journal, Vol. 534, Issue 1
HIRES: the high-resolution echelle spectrometer on the Keck 10-m Telescope
conference, June 1994
- Vogt, Steven S.; Allen, Steven L.; Bigelow, Bruce C.
- 1994 Symposium on Astronomical Telescopes & Instrumentation for the 21st Century, SPIE Proceedings
Evidence of patchy hydrogen reionization from an extreme Lyα trough below redshift six
journal, January 2015
- Becker, George D.; Bolton, James S.; Madau, Piero
- Monthly Notices of the Royal Astronomical Society, Vol. 447, Issue 4
The imprint of inhomogeneous He ii reionization on the H i and He ii Lyα forest
journal, September 2013
- Compostella, Michele; Cantalupo, Sebastiano; Porciani, Cristiano
- Monthly Notices of the Royal Astronomical Society, Vol. 435, Issue 4
The one-dimensional Ly α forest power spectrum from BOSS
journal, November 2013
- Palanque-Delabrouille, Nathalie; Yèche, Christophe; Borde, Arnaud
- Astronomy & Astrophysics, Vol. 559
Constraining the Evolution of the Ionizing Background and the Epoch of Reionization with z ~ 6 Quasars. II. A Sample of 19 Quasars
journal, June 2006
- Fan, Xiaohui; Strauss, Michael A.; Becker, Robert H.
- The Astronomical Journal, Vol. 132, Issue 1
A first direct measurement of the intergalactic medium temperature around a quasar at z= 6: The IGM temperature around a quasar at z=6
journal, May 2010
- Bolton, James S.; Becker, George D.; Wyithe, J. Stuart B.
- Monthly Notices of the Royal Astronomical Society, Vol. 406, Issue 1
On the Density of Neutral Hydrogen in Intergalactic Space.
journal, November 1965
- Gunn, James E.; Peterson, Bruce A.
- The Astrophysical Journal, Vol. 142
The thermal history of the intergalactic medium down to redshift z = 1.5: a new curvature measurement
journal, May 2014
- Boera, E.; Murphy, M. T.; Becker, G. D.
- Monthly Notices of the Royal Astronomical Society, Vol. 441, Issue 3
THE TEMPERATURE-DENSITY RELATION IN THE INTERGALACTIC MEDIUM AT REDSHIFT ⟨ z ⟩ = 2.4
journal, September 2012
- Rudie, Gwen C.; Steidel, Charles C.; Pettini, Max
- The Astrophysical Journal, Vol. 757, Issue 2
Cosmological and astrophysical constraints from the Lyman α forest flux probability distribution function
journal, October 2009
- Viel, Matteo; Bolton, James S.; Haehnelt, Martin G.
- Monthly Notices of the Royal Astronomical Society: Letters, Vol. 399, Issue 1
A consistent determination of the temperature of the intergalactic medium at redshift 〈z〉 = 2.4
journal, January 2014
- Bolton, James S.; Becker, George D.; Haehnelt, Martin G.
- Monthly Notices of the Royal Astronomical Society, Vol. 438, Issue 3
Toward a Precise Measurement of Matter Clustering: Lyα Forest Data at Redshifts 2–4
journal, December 2002
- Croft, Rupert A. C.; Weinberg, David H.; Bolte, Mike
- The Astrophysical Journal, Vol. 581, Issue 1
Improved measurements of the intergalactic medium temperature around quasars: possible evidence for the initial stages of He ii reionization at z ≃ 6: IGM temperature measurements around z ≃ 6 quasars
journal, November 2011
- Bolton, James S.; Becker, George D.; Raskutti, Sudhir
- Monthly Notices of the Royal Astronomical Society, Vol. 419, Issue 4
The Mass Function
journal, December 2002
- White, Martin
- The Astrophysical Journal Supplement Series, Vol. 143, Issue 2
Stellar population effects on the inferred photon density at reionization
journal, December 2015
- Stanway, Elizabeth R.; Eldridge, J. J.; Becker, George D.
- Monthly Notices of the Royal Astronomical Society, Vol. 456, Issue 1
The Coyote Universe. ii. Cosmological Models and Precision Emulation of the Nonlinear Matter Power Spectrum
journal, October 2009
- Heitmann, Katrin; Higdon, David; White, Martin
- The Astrophysical Journal, Vol. 705, Issue 1
Neutrino masses and cosmology with Lyman-alpha forest power spectrum
journal, November 2015
- Palanque-Delabrouille, Nathalie; Yèche, Christophe; Baur, Julien
- Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 11
UV LUMINOSITY FUNCTIONS AT REDSHIFTS z ∼ 4 TO z ∼ 10: 10,000 GALAXIES FROM HST LEGACY FIELDS
journal, April 2015
- Bouwens, R. J.; Illingworth, G. D.; Oesch, P. A.
- The Astrophysical Journal, Vol. 803, Issue 1
LARGE OPACITY VARIATIONS IN THE HIGH-REDSHIFT LY α FOREST: THE SIGNATURE OF RELIC TEMPERATURE FLUCTUATIONS FROM PATCHY REIONIZATION
journal, November 2015
- D’Aloisio, Anson; McQuinn, Matthew; Trac, Hy
- The Astrophysical Journal, Vol. 813, Issue 2
Cosmic calibration: Constraints from the matter power spectrum and the cosmic microwave background
journal, October 2007
- Habib, Salman; Heitmann, Katrin; Higdon, David
- Physical Review D, Vol. 76, Issue 8
The Coyote Universe Extended: Precision Emulation of the Matter Power Spectrum
journal, December 2013
- Heitmann, Katrin; Lawrence, Earl; Kwan, Juliana
- The Astrophysical Journal, Vol. 780, Issue 1
Ultralight scalars as cosmological dark matter
journal, February 2017
- Hui, Lam; Ostriker, Jeremiah P.; Tremaine, Scott
- Physical Review D, Vol. 95, Issue 4
New constraints on the free-streaming of warm dark matter from intermediate and small scale Lyman- forest data
journal, July 2017
- Iršič, Vid; Viel, Matteo; Haehnelt, Martin G.
- Physical Review D, Vol. 96, Issue 2
Characterizing the Pressure Smoothing Scale of the Intergalactic Medium
journal, October 2015
- Kulkarni, Girish; Hennawi, Joseph F.; Oñorbe, Jose
- The Astrophysical Journal, Vol. 812, Issue 1
IGM CONSTRAINTS FROM THE SDSS-III/BOSS DR9 Lyα FOREST TRANSMISSION PROBABILITY DISTRIBUTION FUNCTION
journal, January 2015
- Lee, Khee-Gan; Hennawi, Joseph F.; Spergel, David N.
- The Astrophysical Journal, Vol. 799, Issue 2
GALACTIC AND CIRCUMGALACTIC O VI AND ITS IMPACT ON THE COSMOLOGICAL METAL AND BARYON BUDGETS AT 2 < z ≲ 3.5
journal, May 2014
- Lehner, N.; O'Meara, J. M.; Fox, A. J.
- The Astrophysical Journal, Vol. 788, Issue 2
A MEASUREMENT OF SMALL-SCALE STRUCTURE IN THE 2.2 ⩽ z ⩽ 4.2 Lyα FOREST
journal, June 2010
- Lidz, Adam; Faucher-Giguère, Claude-André; Dall’Aglio, Aldo
- The Astrophysical Journal, Vol. 718, Issue 1
Least-squares frequency analysis of unequally spaced data
journal, February 1976
- Lomb, N. R.
- Astrophysics and Space Science, Vol. 39, Issue 2
Cosmic Reionization After Planck: Could Quasars do it all?
journal, October 2015
- Madau, Piero; Haardt, Francesco
- The Astrophysical Journal, Vol. 813, Issue 1
THE MOST LUMINOUS z ∼ 9-10 GALAXY CANDIDATES YET FOUND: THE LUMINOSITY FUNCTION, COSMIC STAR-FORMATION RATE, AND THE FIRST MASS DENSITY ESTIMATE AT 500 Myr
journal, April 2014
- Oesch, P. A.; Bouwens, R. J.; Illingworth, G. D.
- The Astrophysical Journal, Vol. 786, Issue 2
A new Method to Directly Measure the Jeans Scale of the Intergalactic Medium Using Close Quasar Pairs
journal, September 2013
- Rorai, Alberto; Hennawi, Joseph F.; White, Martin
- The Astrophysical Journal, Vol. 775, Issue 2
MODELING THE Ly α FOREST IN COLLISIONLESS SIMULATIONS
journal, August 2016
- Sorini, Daniele; Oñorbe, José; Lukić, Zarija
- The Astrophysical Journal, Vol. 827, Issue 2
The Efficiency of Stellar Reionization: Effects of Rotation, Metallicity, and Initial mass Function
journal, February 2015
- Topping, Michael W.; Michael Shull, J.
- The Astrophysical Journal, Vol. 800, Issue 2
Warm dark matter as a solution to the small scale crisis: New constraints from high redshift Lyman- forest data
journal, August 2013
- Viel, Matteo; Becker, George D.; Bolton, James S.
- Physical Review D, Vol. 88, Issue 4
GALEX FAR-ULTRAVIOLET COLOR SELECTION OF UV-BRIGHT HIGH-REDSHIFT QUASARS
journal, January 2011
- Worseck, Gábor; Prochaska, J. Xavier
- The Astrophysical Journal, Vol. 728, Issue 1
Early and Extended Helium Reionization over more than 600 Million Years of Cosmic time
journal, July 2016
- Worseck, Gábor; Prochaska, J. Xavier; Hennawi, Joseph F.
- The Astrophysical Journal, Vol. 825, Issue 2
THE END OF HELIUM REIONIZATION AT z ≃ 2.7 INFERRED FROM COSMIC VARIANCE IN HST /COS He II Lyα ABSORPTION SPECTRA
journal, May 2011
- Worseck, Gábor; Xavier Prochaska, J.; McQuinn, Matthew
- The Astrophysical Journal, Vol. 733, Issue 2
Planck intermediate results: VI. The dynamical structure of PLCKG214.6+37.0, a Planck discovered triple system of galaxy clusters
journal, February 2013
- Ade, P. A. R.; Aghanim, N.; Arnaud, M.
- Astronomy & Astrophysics, Vol. 550
First Constraints on Fuzzy Dark Matter from Lyman-α Forest Data and Hydrodynamical Simulations
text, January 2017
- Irsic, V.; Viel, M.; Bolton, Js
- Apollo - University of Cambridge Repository
New constraints on the free-streaming of warm dark matter from intermediate and small scale Lyman-α forest data
text, January 2017
- Irsic, Vid; Viel, M.; Haehnelt, Martin
- Apollo - University of Cambridge Repository
The photoheating of the intergalactic medium in synthesis models of the UV background
text, January 2015
- Ewald, Puchwein,; S., Bolton, James; G., Haehnelt, Martin
- Oxford University Press
Planck intermediate results : XXIV. Constraints on variations in fundamental constants⋆
journal, July 2015
- Ade, P. A. R.; Aghanim, N.; Arnaud, M.
- Astronomy & Astrophysics, Vol. 580
Planck 2015 results : X. Diffuse component separation: Foreground maps
journal, September 2016
- Adam, R.; Ade, P. A. R.; Aghanim, N.
- Astronomy & Astrophysics, Vol. 594
A deep search for metals near redshift 7: The line of sight towards ULAS J1120+0641
text, January 2017
- Bosman, Sarah; Becker, Gd; Haehnelt, Martin
- Apollo - University of Cambridge Repository
New Constraints on the free-streaming of warm dark matter from intermediate and small scale Lyman-$α$ forest data
text, January 2017
- Iršič, V.; Viel, M.; Haehnelt, Martin Gerhard
- Apollo - University of Cambridge Repository
First Constraints on Fuzzy Dark Matter from Lyman-α Forest Data and Hydrodynamical Simulations.
text, January 2017
- Iršič, Vid; Viel, Matteo; Haehnelt, Martin
- Apollo - University of Cambridge Repository
The photoheating of the intergalactic medium in synthesis models of the UV background
text, January 2015
- Puchwein, Ewald; Bolton, Js; Haehnelt, Martin
- Apollo - University of Cambridge Repository
Warm dark matter as a solution to the small scale crisis: New constraints from high redshift Lyman-α forest data
text, January 2013
- Viel, M.; Becker, George; Bolton, Js
- Apollo - University of Cambridge Repository
Planck 2015 results : XVI. Isotropy and statistics of the CMB
journal, September 2016
- Ade, P. A. R.; Aghanim, N.; Akrami, Y.
- Astronomy & Astrophysics, Vol. 594
A consistent determination of the temperature of the intergalactic medium at redshift (z) = 2.4
text, January 2014
- Bolton, Js; Becker, George; Haehnelt, Martin
- Apollo - University of Cambridge Repository
Exploring the thermal state of the low-density intergalactic medium at $z$ = 3 with an ultrahigh signal-to-noise QSO spectrum
text, January 2017
- Rorai, Alberto; Becker, Gd; Haehnelt, Martin
- Apollo - University of Cambridge Repository
XQ-100: A legacy survey of one hundred 3.5 ≲ z ≲ 4.5 quasars observed with VLT/X-shooter
text, January 2016
- López, S.; D'Odorico, V.; Ellison, Sl
- Apollo - University of Cambridge Repository
The History and Morphology of Helium Reionization
text, January 2007
- Furlanetto, Steven; Oh, S. Peng
- arXiv
Possible evidence for an inverted temperature-density relation in the intergalactic medium from the flux distribution of the Lyman-alpha forest
text, January 2007
- Bolton, J. S.; Viel, M.; Kim, T. -S.
- arXiv
Evolution of the Intergalactic Opacity: Implications for the Ionizing Background, Cosmic Star Formation, and Quasar Activity
text, January 2008
- Faucher-Giguere, C. -A.; Lidz, A.; Hernquist, L.
- arXiv
An unbiased measurement of the UV background and its evolution via the proximity effect in quasar spectra
text, January 2008
- Dall'Aglio, Aldo; Wisotzki, Lutz; Worseck, Gabor
- arXiv
The End of Helium Reionization at z~2.7 Inferred from Cosmic Variance in HST/COS HeII Lyman Alpha Absorption Spectra
text, January 2011
- Worseck, Gábor; Prochaska, J. Xavier; McQuinn, Matthew
- arXiv
The Temperature-Density Relation in the Intergalactic Medium at Redshift =2.4
text, January 2012
- Rudie, Gwen C.; Steidel, Charles C.; Pettini, Max
- arXiv
Planck 2013 results. XVI. Cosmological parameters
text, January 2013
- Collaboration, Planck; Ade, P. A. R.; Aghanim, N.
- arXiv
The imprint of inhomogeneous HeII reionization on the HI and HeII Ly-alpha forest
text, January 2013
- Compostella, Michele; Cantalupo, Sebastiano; Porciani, Cristiano
- arXiv
The one-dimensional Ly-alpha forest power spectrum from BOSS
text, January 2013
- Palanque-Delabrouille, Nathalie; Yèche, Christophe; Borde, Arnaud
- arXiv
Early and Extended Helium Reionization Over More Than 600 Million Years of Cosmic Time
text, January 2014
- Worseck, Gábor; Prochaska, J. Xavier; Hennawi, Joseph F.
- arXiv
Planck 2015 results. XIII. Cosmological parameters
text, January 2015
- Collaboration, Planck; Ade, P. A. R.; Aghanim, N.
- arXiv
Stellar Population Effects on the Inferred Photon Density at Reionization
text, January 2015
- Stanway, E. R.; Eldridge, J. J.; Becker, G. D.
- arXiv
Intergalactic Lyman continuum photon budget in the past 5 billion years
text, January 2016
- Gaikwad, Prakash; Khaire, Vikram; Choudhury, Tirthankar Roy
- arXiv
Ultralight scalars as cosmological dark matter
text, January 2016
- Hui, Lam; Ostriker, Jeremiah P.; Tremaine, Scott
- arXiv
The Lyman-alpha forest power spectrum from the XQ-100 Legacy Survey
text, January 2017
- Iršič, Vid; Viel, Matteo; Berg, Trystyn A. M.
- arXiv
The igmspec Database of Public Spectra Probing the Intergalactic Medium
preprint, January 2017
- Prochaska, J. Xavier
- arXiv
A Measurement of the Temperature-Density Relation in the Intergalactic Medium Using a New Lyman-alpha Absorption Line Fitting Method
text, January 2000
- McDonald, Patrick; Miralda-Escude, Jordi; Rauch, Michael
- arXiv
Towards a Precise Measurement of Matter Clustering: Lyman-alpha Forest Data at Redshifts 2-4
text, January 2000
- Croft, Rupert A. C.; Weinberg, David H.; Bolte, Mike
- arXiv
Physical effects on the Lyman-alpha forest flux power spectrum: damping wings, ionizing radiation fluctuations, and galactic winds
text, January 2004
- McDonald, P.; Seljak, U.; Cen, R.
- arXiv
Tightening Constraints from the Lyman Alpha Forest with the Flux Probability Distribution Function
text, January 2005
- Lidz, Adam; Heitmann, Katrin; Hui, Lam
- arXiv
Cosmic Calibration: Constraints from the Matter Power Spectrum and the Cosmic Microwave Background
text, January 2007
- Habib, Salman; Heitmann, Katrin; Higdon, David
- arXiv
The thermal history of the intergalactic medium
text, January 1999
- Schaye, Joop; Theuns, Tom; Rauch, Michael
- arXiv
Works referencing / citing this record:
The one-dimensional power spectrum from the SDSS DR14 Lyα forests
journal, July 2019
- Chabanier, Solène; Palanque-Delabrouille, Nathalie; Yèche, Christophe
- Journal of Cosmology and Astroparticle Physics, Vol. 2019, Issue 07
Impact of inhomogeneous reionization on the Lyman-α forest
journal, May 2019
- Montero-Camacho, Paulo; Hirata, Christopher M.; Martini, Paul
- Monthly Notices of the Royal Astronomical Society, Vol. 487, Issue 1
Mapping Quasar Light Echoes in 3D with Ly α Forest Tomography
journal, September 2019
- Schmidt, Tobias M.; Hennawi, Joseph F.; Lee, Khee-Gan
- The Astrophysical Journal, Vol. 882, Issue 2
Revealing Reionization with the Thermal History of the Intergalactic Medium: New Constraints from the Ly α Flux Power Spectrum
journal, February 2019
- Boera, Elisa; Becker, George D.; Bolton, James S.
- The Astrophysical Journal, Vol. 872, Issue 1
A Novel Statistical Method for Measuring the Temperature–Density Relation in the IGM Using the b – N H i Distribution of Absorbers in the Ly α Forest
journal, May 2019
- Hiss, Hector; Walther, Michael; Oñorbe, Jose
- The Astrophysical Journal, Vol. 876, Issue 1
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 Ly α Absorption Spectra
journal, April 2019
- Worseck, Gábor; Davies, Frederick B.; Hennawi, Joseph F.
- The Astrophysical Journal, Vol. 875, Issue 2
The power spectrum of the Lyman-α Forest at z < 0.5
journal, February 2019
- Khaire, Vikram; Walther, Michael; Hennawi, Joseph F.
- Monthly Notices of the Royal Astronomical Society, Vol. 486, Issue 1
Inhomogeneous reionization models in cosmological hydrodynamical simulations
journal, May 2019
- Oñorbe, Jose; Davies, F. B.; Lukić, Z.
- Monthly Notices of the Royal Astronomical Society, Vol. 486, Issue 3
New Constraints on IGM Thermal Evolution from the Ly α Forest Power Spectrum
journal, February 2019
- Walther, Michael; Oñorbe, Jose; Hennawi, Joseph F.
- The Astrophysical Journal, Vol. 872, Issue 1
A New Measurement of the Temperature–density Relation of the IGM from Voigt Profile Fitting
journal, September 2018
- Hiss, Hector; Walther, Michael; Hennawi, Joseph F.
- The Astrophysical Journal, Vol. 865, Issue 1
ETHOS – an Effective Theory of Structure Formation: detecting dark matter interactions through the Lyman-α forest
journal, May 2019
- Bose, Sownak; Vogelsberger, Mark; Zavala, Jesús
- Monthly Notices of the Royal Astronomical Society, Vol. 487, Issue 1
A New Measurement of the Temperature Density Relation of the IGM From Voigt Profile Fitting
text, January 2017
- Hiss, Hector; Walther, Michael; Hennawi, Joseph F.
- arXiv
Inhomogeneous Reionization Models in Cosmological Hydrodynamical Simulations
text, January 2018
- Oñorbe, Jose; Davies, F. B.; Lukić, Z.
- arXiv
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