4.7 Article

IGM damping wing constraints on reionization from covariance reconstruction of two z ≳ 7 QSOs

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Astronomy & Astrophysics

A deep learning approach to quasar continuum prediction

Bin Liu et al.

Summary: Our study introduces a novel intelligent neural network, iQNet, for predicting quasar continuum spectra, trained on high-resolution quasar spectra at low redshift and applied to different astronomical surveys. The model achieves high accuracy in predicting quasar continua and demonstrates the potential of deep learning methods in quasar continuum prediction.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Article Astronomy & Astrophysics

A comparison of quasar emission reconstruction techniques for z ≥ 5.0 Lyman α and Lyman β transmission

Sarah E. Bosman et al.

Summary: The reconstruction techniques for intrinsic quasar continua are crucial for studying Lyman alpha and Lyman beta transmission at high redshifts. Evaluation of various techniques reveals biases and uncertainties, with power-law extrapolation and certain PCA methods showing significant deviations. New PCA methods demonstrate improved accuracy, emphasizing the importance of systematic testing and training of continuum reconstruction techniques.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Article Astronomy & Astrophysics

Studying the Lyman α optical depth fluctuations at z ∼ 5.5 using fast semi-numerical methods

T. Roy Choudhury et al.

Summary: A computationally efficient method is proposed in this study to simulate Lyman alpha absorption optical depth in the presence of neutral hydrogen "islands" leftover from reionization at redshifts between 5 and 6. By analyzing large-scale fluctuations in optical depth, it is confirmed at greater than or similar to 2 sigma confidence that reionization is not complete before around 5.6, with a possibility of completion as late as around 5.2.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Article Astronomy & Astrophysics

Long troughs in the Lyman-α forest below redshift 6 due to islands of neutral hydrogen

Laura C. Keating et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Article Astronomy & Astrophysics

Reionization history constraints from neural network based predictions of high-redshift quasar continua

Dominika Durovcikova et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Article Astronomy & Astrophysics

Planck 2018 results: VI. Cosmological parameters

N. Aghanim et al.

ASTRONOMY & ASTROPHYSICS (2020)

Article Astronomy & Astrophysics

Observing the tail of reionization: neutral islands in the z=5.5 Lyman-α forest

Fahad Nasir et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Article Astronomy & Astrophysics

Constraining the second half of reionization with the Ly β forest

Laura C. Keating et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Article Astronomy & Astrophysics

Deep Learning Prediction of the Broad Lyα Emission Line of Quasars

Hassan Fathivavsari

ASTROPHYSICAL JOURNAL (2020)

Article Astronomy & Astrophysics

Poniua'ena: A Luminous z=7.5 Quasar Hosting a 1.5 Billion Solar Mass Black Hole

Jinyi Yang et al.

ASTROPHYSICAL JOURNAL LETTERS (2020)

Article Astronomy & Astrophysics

A Significantly Neutral Intergalactic Medium Around the Luminous z=7 Quasar J0252-0503

Feige Wang et al.

ASTROPHYSICAL JOURNAL (2020)

Article Astronomy & Astrophysics

Constraints on reionization from the z=7.5 QSO ULASJ1342+0928

Bradley Greig et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

Article Astronomy & Astrophysics

Inferences on the timeline of reionization at z ∼ 8 from the KMOS Lens-Amplified Spectroscopic Survey

Charlotte A. Mason et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

Article Astronomy & Astrophysics

Constraining the Neutral Fraction of Hydrogen in the IGM at Redshift 7.5

A. Hoag et al.

ASTROPHYSICAL JOURNAL (2019)

Article Astronomy & Astrophysics

Large Ly α opacity fluctuations and low CMB τ in models of late reionization with large islands of neutral hydrogen extending to z < 5.5

Girish Kulkarni et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

Article Astronomy & Astrophysics

New constraints on Lyman-α opacity with a sample of 62 quasars at z > 5.7

Sarah E. I. Bosman et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)

Article Astronomy & Astrophysics

Quantitative Constraints on the Reionization History from the IGM Damping Wing Signature in Two Quasars at z > 7

Frederick B. Davies et al.

ASTROPHYSICAL JOURNAL (2018)

Article Astronomy & Astrophysics

Predicting Quasar Continua near Lyα with Principal Component Analysis

Frederick B. Davies et al.

ASTROPHYSICAL JOURNAL (2018)

Article Astronomy & Astrophysics

The Opacity of the Intergalactic Medium Measured along Quasar Sightlines at z ∼ 6

Anna-Christina Eilers et al.

ASTROPHYSICAL JOURNAL (2018)

Article Astronomy & Astrophysics

Are we witnessing the epoch of reionization at z=7.1 from the spectrum of J1120+0641?

Bradley Greig et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2017)

Article Astronomy & Astrophysics

Lyα emission-line reconstruction for high-z QSOs

Bradley Greig et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2017)

Article Astronomy & Astrophysics

Planck 2015 results XIII. Cosmological parameters

P. A. R. Ade et al.

ASTRONOMY & ASTROPHYSICS (2016)

Article Astronomy & Astrophysics

The Evolution Of 21 cm Structure (EOS): public, large-scale simulations of Cosmic Dawn and reionization

Andrei Mesinger et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2016)

Article Astronomy & Astrophysics

Planck 2015 results XIII. Cosmological parameters

P. A. R. Ade et al.

ASTRONOMY & ASTROPHYSICS (2016)

Article Astronomy & Astrophysics

Re-examining the case for neutral gas near the redshift 7 quasar ULAS J1120+0641

Sarah E. I. Bosman et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Article Astronomy & Astrophysics

Evidence of patchy hydrogen reionization from an extreme Lyα trough below redshift six

George D. Becker et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Article Astronomy & Astrophysics

The clustering of Lyman α emitters at z ≈ 7: implications for reionization and host halo masses

Emanuele Sobacchi et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Article Astronomy & Astrophysics

Can the intergalactic medium cause a rapid drop in Lyα emission at z > 6?

Andrei Mesinger et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Article Astronomy & Astrophysics

Model-independent evidence in favour of an end to reionization by z ≈ 6

Ian D. McGreer et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Article Astronomy & Astrophysics

THE ELEVENTH AND TWELFTH DATA RELEASES OF THE SLOAN DIGITAL SKY SURVEY: FINAL DATA FROM SDSS-III

Shadab Alam et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2015)

Article Astronomy & Astrophysics

THE BARYON OSCILLATION SPECTROSCOPIC SURVEY OF SDSS-III

Kyle S. Dawson et al.

ASTRONOMICAL JOURNAL (2013)

Article Multidisciplinary Sciences

Extremely metal-poor gas at a redshift of 7

Robert A. Simcoe et al.

NATURE (2012)

Article Astronomy & Astrophysics

21cmfast: a fast, seminumerical simulation of the high-redshift 21-cm signal

Andrei Mesinger et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2011)

Article Multidisciplinary Sciences

A luminous quasar at a redshift of z=7.085

Daniel J. Mortlock et al.

NATURE (2011)

Article Astronomy & Astrophysics

How neutral is the intergalactic medium surrounding the redshift z=7.085 quasar ULAS J1120+0641?

J. S. Bolton et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2011)

Article Astronomy & Astrophysics

Constraints on reionization and source properties from the absorption spectra of z > 6.2 quasars

Andrei Mesinger et al.

ASTROPHYSICAL JOURNAL (2007)