ENIGMA

Publications by group members

D. Sorini, et al.: Modeling the Lyman-alpha Forest in Collisionless Simulations. ApJ, 827:97, August 2016.
G. Worseck, et al.: Early and Extended Helium Reionization over More Than 600 Million Years of Cosmic Time. ApJ, 825:144, July 2016.
T. R. Monroe, et al.: The UV-bright Quasar Survey (UVQS): DR1. AJ, 152:25, July 2016.
J. Oñorbe, et al.: Self-Consistent Modeling of Reionization in Cosmological Hydrodynamical Simulations. submitted to ApJ, ArXiv e-prints 1607.04218, July 2016.
I. S. Khrykin, et al.: He II Proximity Effect and the Lifetime of Quasars. ApJ, 824:133, June 2016.
H. Fu, et al.: The Circumgalactic Medium of Submillimeter Galaxies. I. First Results from a Radio-Identified Sample. submitted to ApJ, ArXiv e-prints 1607.00016, June 2016.
C. Rivera, et al.: AGNfitter: A Bayesian MCMC approach to fitting spectral energy distributions of AGN. submitted to ApJ, ArXiv e-prints 1606.05648, June 2016.
R. Kannan, et al.: Galaxy formation with local photoionization feedback - II. Effect of X-ray emission from binaries and hot gas. MNRAS, 458:2516-2529, May 2016.
F. Arrigoni Battaia, et al.: The Stacked Lyman-Alpha Emission Profile from the Circum-Galactic Medium of z~2 Quasars. ArXiv e-prints 1604.02942, April 2016.
J. Stern, et al.: A Universal Density Structure for Circum-Galactic Gas. submitted to ApJ, ArXiv e-prints 1604.02168, April 2016.
J. Stern, et al.: Constraining the dynamical importance of hot gas and radiation pressure in quasar outflows using emission line ratios. ApJ, 819:130, March 2016.
K.-G. Lee, et al.: Shadow of a Colossus: A z = 2.44 Galaxy Protocluster Detected in 3D Ly-a Forest Tomographic Mapping of the COSMOS Field. ApJ, 817:160, February 2016.
C. W. Stark, et al.: Protocluster discovery in tomographic Ly -alpha forest flux maps. MNRAS, 453:311-327, October 2015.
G. Kulkarni et al.: Characterizing the Jeans Filtering Scale of the Intergalactic Medium. ApJ, 812:30, October 2015
M. W. Lau, et al.: Quasars Probing Quasars VIII. The Physical Properties of the Cool Circumgalactic medium Surrounding z ~ 2-3 Massive Galaxies. submitted to ApJ, ArXiv e-prints: 1510.06018, October 2015.
F. Arrigoni Battaia et al.: Deep He II and C IV Spectroscopy of a Giant Ly-alpha Nebula: Dense Compact Gas Clumps in the Circumgalactic Medium of a z ~ 2 Quasar. ApJ, 809:163, August 2015.
K. H. R. Rubin et al.: Dissecting the Gaseous Halos of z2 Damped Ly-alpha Systems with Close Quasar Pairs. ApJ, 808:38, July 2015.
E. Lusso et al.: The first ultraviolet quasar stacked spectrum at z=2.4 from WFC3. MNRAS, 449:4204-422, June 2015
J. F. Hennawi et al.:Quasar Quartet Embedded in Giant Nebula Reveals Rare Massive Structure in Distant Universe Science, 348:6236, May 2015
J. Stern et al.: Spatially Resolving the Kinematics of the <100 micro-as Quasar Broad Line Region using Spectroastrometry. ApJ, 804:57, April 2015.
F. A. Battaia et al.: A Deep Narrowband Imaging Search for CIV and He II Emission from Ly-alpha Blobs. ApJ, 804:26, April 2015.
K.-G. Lee et al.: IGM Constraints from the SDSS-III/BOSS DR9 Ly-alpha Forest Flux Probability Distribution Function. ApJ, 799:196, February 2015.
N. H. M. Crighton et al.: Metal-enriched, sub-kiloparsec gas clumps in the circumgalactic medium of a faint z = 2.5 galaxy. MNRAS, 446:18-37, January 2015.
J. X. Prochaska et al.: Quasars Probing Quasars VII. The Pinnacle of the Cool Circumgalactic Medium Surrounds Massive z~2 Galaxies. ApJ, 796:140, December 2014.
K.-G. Lee et al.: Lyman-alpha Forest Tomography from Background Galaxies: The First Megaparsec-Resolution Large-Scale Structure Map at z>2. ApJL, 795:L12, November 2014.
K.-G. Lee et al.: Observational Requirements for Ly-alpha Forest Tomographic Mapping of Large-scale Structure at z ~ 2. ApJ, 788:49, June 2014.
G. Kulkarni et al.: Chemical Constraints on the Contribution of Population III Stars to Cosmic Reionization. ApJ, 787:64, May 2014.
G. Worseck et al.: Early and Extended Helium Reionization Over More Than 600 Million Years of Cosmic Time. submitted to ApJ, ArXiv e-prints:1405.7405, May 2014.
S. Cantalupo et al.: A cosmic web filament revealed in Lyman-alpha emission around a luminous high-redshift quasar. Nature, 506:63-66, February 2014.
R. Kannan et al.: Galaxy formation with local photoionization feedback - I. Methods. MNRAS, 437:2882-2893, January 2014.
M. Fumagalli et al.: Confronting Simulations of Optically Thick Gas in Massive Halos with Observations at z = 2-3. ApJ, 780:74, January 2014.
E. Lusso et al.: The Obscured Fraction of Active Galactic Nuclei in the XMM-COSMOS Survey: A Spectral Energy Distribution Perspective. ApJ, 777:86, November 2013.
N. H. M. Crighton et al.: Metal-poor, Cool Gas in the Circumgalactic Medium of a z = 2.4 Star-forming Galaxy: Direct Evidence for Cold Accretion?. ApJL, 776:L18, October 2013.
J. X. Prochaska et al.: Quasars Probing Quasars. VI. Excess H I Absorption within One Proper Mpc of z ~ 2 Quasars. ApJ, 776:136, October 2013.
A. Rorai et al.: A New Method to Directly Measure the Jeans Scale of the Intergalactic Medium Using Close Quasar Pairs. ApJ, 775:81, October 2013.
G. Kulkarni et al.: Chemical Enrichment of Damped Ly-alpha Systems as a Direct Constraint on Population III Star Formation. ApJ, 772:93, August 2013.
J. F. Hennawi, J. X. Prochaska: Quasars Probing Quasars. IV. Joint Constraints on the Circumgalactic Medium from Absorption and Emission. ApJ, 766:58, March 2013.
K.-G. Lee et al.: The BOSS Ly-alpha Forest Sample from SDSS Data Release 9. AJ, 145:69, March 2013.
J. X. Prochaska et al.: A Substantial Mass of Cool, Metal-enriched Gas Surrounding the Progenitors of Modern-day Ellipticals. ApJL, 762:L19, January 2013.
I. Paris et al.: The Sloan Digital Sky Survey quasar catalog: ninth data release. A&A, 548:A66, December 2012.
N. H. Crighton et al.: A high molecular fraction in a sub-damped absorber at z=0.56. MNRAS, October 2012
G. S. Stinson et al.: MAGICC haloes: confronting simulations with observations of the circumgalactic medium at z=0. MNRAS, 425:1270-1277, September 2012.
R. Decarli et al.: Hubble Space Telescope Narrowband Search for Extended Ly-alpha Emission around Two z > 6 Quasars. ApJ, 756:150, September 2012.
M. White et al.: The clustering of intermediate-redshift quasars as measured by the Baryon Oscillation Spectroscopic Survey. MNRAS, 424:933-950, August 2012.
J. Bovy et al.: Photometric Redshifts and Quasar Probabilities from a Single, Data-driven Generative Model. ApJ, 749:41, April 2012.
M. Oguri et al.: Combined strong and weak lensing analysis of 28 clusters from the Sloan Giant Arcs Survey. MNRAS, 420:3213-3239, March 2012.
N. P. Ross et al.: The SDSS-III Baryon Oscillation Spectroscopic Survey: Quasar Target Selection for Data Release Nine. ApJS, 199:3, March 2012.
J. A. Kirkpatrick et al.: A Simple Likelihood Method for Quasar Target Selection. ApJ, 743:125, December 2011.
Y. Yang et al.: Constraining Dust and Molecular Gas Properties in Ly-alpha Blobs at z ~ 3. ApJ, 744:178, October 2011
D. J. Eisenstein et al.: SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way, and Extra-Solar Planetary Systems. AJ, 142:72, September 2011.
G. Worseck et al.: The End of Helium Reionization at z ~= 2.7 Inferred from Cosmic Variance in HST/COS He II Ly-alpha Absorption Spectra. ApJL, 733:L24, June 2011.
M. B. Bayliss et al.: Gemini/GMOS Spectroscopy of 26 Strong-lensing-selected Galaxy Cluster Cores. ApJS, 193:8-+, March 2011.
J. Bovy et al.: Think Outside the Color Box: Probabilistic Target Selection and the SDSS-XDQSO Quasar Targeting Catalog. ApJ, 729:141-+, March 2011.
M. B. Bayliss et al.: The Redshift Distribution of Giant Arcs in the Sloan Giant Arcs Survey. ApJL, 727:L26+, January 2011.
B. P. Koester et al.: Two Lensed z ~= 3 Lyman Break Galaxies Discovered in the SDSS Giant Arcs Survey. ApJL, 723:L73-L77, November 2010.
C. L. Martin et al.: The Size and Origin of Metal-enriched Regions in the Intergalactic Medium from Spectra of Binary Quasars. ApJ, 721:174-192, September 2010.
M. B. Bayliss et al.: Two Lensed Lyman-alpha Emitting Galaxies at z ~ 5. ApJ, 720:1559-1568, September 2010.
S. L. Ellison et al.: The nature of proximate damped Lyman-alpha systems. MNRAS, 406:1435-1459, August 2010.
Y. Shen et al.: Binary Quasars at High Redshift. II. Sub-Mpc Clustering at z ~ 3-4. ApJ, 719:1693-1698, August 2010.
J. F. Hennawi et al.: Binary Quasars at High Redshift. I. 24 New Quasar Pairs at z ~ 3-4. ApJ, 719:1672-1692, August 2010.
N. Inada et al.: The Sloan Digital Sky Survey Quasar Lens Search. IV. Statistical Lens Sample from the Fifth Data Release. AJ, 140:403-415, August 2010.
K. B. Schmidt et al.: Selecting Quasars by Their Intrinsic Variability. ApJ, 714:1194-1208, May 2010.
C. L. Carilli et al.: Ionization Near Zones Associated with Quasars at z ~ 6. ApJ, 714:834-839, May 2010.

MPG Humboldt Foundation MPIA

NEWS

Discovery of the first quasar quartet: Published in May 2015, the discovery of the first Quasar Quartet by a team of astronomers led by Joe Hennawi from MPIA was ranked number four in Astronomy Magazine’s top 10 Space Stories of 2015. For more information please have a look at the MPIA press release.
From Wall to Web 2016: The ENIGMA group is happy to announce this year's IGM conference 'From Wall to Web'. This six day conference will take place July 24 – 29, 2016 at the Harnack-Haus in Berlin, Germany. For more information please check the conference webpage.
Illuminating the Dark Ages: Quasars and Galaxies in the Reionization Epoch: The Max Planck Institute for Astronomy is happy to announce the 5th annual MPIA summer conference, Illuminating the Dark Ages: Quasars and Galaxies in the Reionization Epoch. This 5 day conference will take place June 27 - July 1, 2016, at the Haus der Astronomie in Heidelberg, Germany. For more information please check the conference webpage.
Discovery of the first quadruple quasar: Using the W.M. Keck observatory in Hawaii, the ENIGMA group of the Max Planck Institute for Astronomy has discovered the first quadruple quasar: four rare active black holes situated in close proximity to one another. The quartet resides in one of the most massive structures ever discovered in the distant universe, and is surrounded by a giant nebula of cool dense gas. For more information please have a look at the MPIA press release.
'CT Scan' of Distant Universe Reveals Cosmic Web in 3D: The ENIGMA group from the Max Planck Institute for Astronomy has created the first three-dimensional map of the 'adolescent' Universe, just 3 billion years after the Big Bang.This map, millions of light years across, provides a tantalizing glimpse of large structures in the 'cosmic web', which forms the backbone of cosmic structure. For more information please have a look at the MPIA press release.
Intergalactic Matters 2014: This weeklong workshop takes place June 16–20, 2014, at the MPIA in Heidelberg, Germany. It aims to bring together experts in the study of the IGM/CGM to discuss recent developments in the field. For more information please visit the conference web site.
Black Hole Powers 'Cosmic Flashlight' Illuminating the Cosmic Web: Researchers from the University of California at Santa Cruz and the ENIGMA group at the Max Planck Institute for Astronomy have captured an image of the cosmic web for the first time: they exploited the intense radiation generated by a supermassive black hole, which, like a flashlight, illuminates the cosmic web, revealing its structure. For more information please see the MPIA press release.
Observation of Distant Galaxy Powered by Primordial Cosmic Fuel: Researchers from the ENIGMA group have detected cold streams of primordial hydrogen, vestigial matter left over from the Big Bang, fueling a distant star-forming galaxy in the early Universe. Profuse flows of gas onto galaxies are believed to be crucial for explaining an era 10 billion years ago, when galaxies were copiously forming stars. For more information and details on this discovery, please have a look at the MPIA press release.

Exploring the Nature of the Inter- and Circum-galactic Media

NEWS