Search Results - "Bosman, Sarah"

Reionization and galaxy inference from the high-redshift Ly α forest by Qin, Yuxiang, Mesinger, Andrei, Bosman, Sarah E I, Viel, Matteo

“…ABSTRACT The transmission of Lyman α (Ly α) in the spectra of distant quasars depends on the density, temperature, and ionization state of the intergalactic…”
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New constraints on Lyman-α opacity with a sample of 62 quasars at z > 5.7 by Bosman, Sarah E I, Fan, Xiaohui, Jiang, Linhua, Reed, Sophie, Matsuoka, Yoshiki, Becker, George, Haehnelt, Martin

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Hydrogen reionization ends by z = 5.3: Lyman-α optical depth measured by the XQR-30 sample by Bosman, Sarah E I, Davies, Frederick B, Becker, George D, Keating, Laura C, Davies, Rebecca L, Zhu, Yongda, Eilers, Anna-Christina, D’Odorico, Valentina, Bian, Fuyan, Bischetti, Manuela, Cristiani, Stefano V, Fan, Xiaohui, Farina, Emanuele P, Haehnelt, Martin G, Hennawi, Joseph F, Kulkarni, Girish, Mesinger, Andrei, Meyer, Romain A, Onoue, Masafusa, Pallottini, Andrea, Qin, Yuxiang, Ryan-Weber, Emma, Schindler, Jan-Torge, Walter, Fabian, Wang, Feige, Yang, Jinyi

“…ABSTRACT The presence of excess scatter in the Ly-α forest at z ∼ 5.5, together with the existence of sporadic extended opaque Gunn-Peterson troughs, has…”
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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 by Kulkarni, Girish, Keating, Laura C, Haehnelt, Martin G, Bosman, Sarah E I, Puchwein, Ewald, Chardin, Jonathan, Aubert, Dominique

“…Abstract High-redshift quasi-stellar object (QSO) spectra show large spatial fluctuations in the Ly α opacity of the intergalactic medium on surprisingly large…”
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Lyman-α transmission properties of the intergalactic medium in the CoDaII simulation by Gronke, Max, Ocvirk, Pierre, Mason, Charlotte, Matthee, Jorryt, Bosman, Sarah E I, Sorce, Jenny G, Lewis, Joseph, Ahn, Kyungjin, Aubert, Dominique, Dawoodbhoy, Taha, Iliev, Ilian T, Shapiro, Paul R, Yepes, Gustavo

“…ABSTRACT The decline in abundance of Lyman-α (Lyα) emitting galaxies at z ≳ 6 is a powerful and commonly used probe to constrain the progress of cosmic…”
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New constraints on quasar evolution: broad-line velocity shifts over 1.5 ≲ z ≲ 7.5 by Meyer, Romain A, Bosman, Sarah E I, Ellis, Richard S

“…ABSTRACT We present the results of a model-independent investigation of the rest-frame UV spectra from a comprehensive sample of 394 quasars in the redshift…”
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A comparison of quasar emission reconstruction techniques for z ≥ 5.0 Lyman α and Lyman β transmission by Bosman, Sarah E I, Ďurovčíková, Dominika, Davies, Frederick B, Eilers, Anna-Christina

“…ABSTRACT Reconstruction techniques for intrinsic quasar continua are crucial for the precision study of Lyman α (Ly α) and Lyman β (Ly β) transmission at z >…”
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Studying the Lyman α optical depth fluctuations at z ∼ 5.5 using fast semi-numerical methods by Choudhury, T Roy, Paranjape, Aseem, Bosman, Sarah E I

“…ABSTRACT We present a computationally efficient and fast semi-numerical technique for simulating the Lyman α (Ly α) absorption optical depth in presence of…”
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The Fraction and Kinematics of Broad Absorption Line Quasars across Cosmic Time by Bischetti, Manuela, Fiore, Fabrizio, Feruglio, Chiara, D’Odorico, Valentina, Arav, Nahum, Costa, Tiago, Zubovas, Kastytis, Becker, George, Bosman, Sarah E. I., Cupani, Guido, Davies, Rebecca, Eilers, Anna-Christina, Farina, Emanuele Paolo, Ferrara, Andrea, Gaspari, Massimo, Mazzucchelli, Chiara, Onoue, Masafusa, Piconcelli, Enrico, Zanchettin, Maria Vittoria, Zhu, Yongda

“…Abstract Luminous quasars are powerful targets to investigate the role of feedback from supermassive black holes (BHs) in regulating the growth phases of BHs…”
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Detection of stellar light from quasar host galaxies at redshifts above 6 by Ding, Xuheng, Onoue, Masafusa, Silverman, John D., Matsuoka, Yoshiki, Izumi, Takuma, Strauss, Michael A., Jahnke, Knud, Phillips, Camryn L., Li, Junyao, Volonteri, Marta, Haiman, Zoltan, Andika, Irham Taufik, Aoki, Kentaro, Baba, Shunsuke, Bieri, Rebekka, Bosman, Sarah E. I., Bottrell, Connor, Eilers, Anna-Christina, Fujimoto, Seiji, Habouzit, Melanie, Imanishi, Masatoshi, Inayoshi, Kohei, Iwasawa, Kazushi, Kashikawa, Nobunari, Kawaguchi, Toshihiro, Kohno, Kotaro, Lee, Chien-Hsiu, Lupi, Alessandro, Lyu, Jianwei, Nagao, Tohru, Overzier, Roderik, Schindler, Jan-Torge, Schramm, Malte, Shimasaku, Kazuhiro, Toba, Yoshiki, Trakhtenbrot, Benny, Trebitsch, Maxime, Treu, Tommaso, Umehata, Hideki, Venemans, Bram P., Vestergaard, Marianne, Walter, Fabian, Wang, Feige, Yang, Jinyi

“…The detection of starlight from the host galaxies of quasars during the reionization epoch ( z  > 6) has been elusive, even with deep Hubble Space Telescope…”
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Constraining IGM enrichment and metallicity with the C iv forest correlation function by Tie, Suk Sien, Hennawi, Joseph F, Kakiichi, Koki, Bosman, Sarah E I

“…ABSTRACT The distribution and abundance of metals in the diffuse intergalactic medium (IGM) have implications for galaxy formation and evolution models, and…”
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Measuring the Density Fields around Bright Quasars at z ∼ 6 with XQR-30 Spectra by Chen, Huanqing, Eilers, Anna-Christina, Bosman, Sarah E. I., Gnedin, Nickolay Y., Fan, Xiaohui, Wang, Feige, Yang, Jinyi, D’Odorico, Valentina, Becker, George D., Bischetti, Manuela, Mazzucchelli, Chiara, Mesinger, Andrei, Pallottini, Andrea

“…Abstract Measuring the density of the intergalactic medium using quasar sight lines in the epoch of reionization is challenging due to the saturation of Ly α…”
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Three Lyα Emitting Galaxies within a Quasar Proximity Zone at z ∼ 5.8 by Bosman, Sarah E. I., Kakiichi, Koki, Meyer, Romain A., Gronke, Max, Laporte, Nicolas, Ellis, Richard S.

“…Abstract Quasar proximity zones at correspond to overdense and overionized environments. Galaxies found inside proximity zones can therefore display features…”
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The X–shooter/ALMA Sample of Quasars in the Epoch of Reionization. II. Black Hole Masses, Eddington Ratios, and the Formation of the First Quasars by Farina, Emanuele Paolo, Schindler, Jan-Torge, Walter, Fabian, Bañados, Eduardo, Davies, Frederick B., Decarli, Roberto, Eilers, Anna-Christina, Fan, Xiaohui, Hennawi, Joseph F., Mazzucchelli, Chiara, Meyer, Romain A., Trakhtenbrot, Benny, Volonteri, Marta, Wang, Feige, Worseck, Gábor, Yang, Jinyi, Gutcke, Thales A., Venemans, Bram P., Bosman, Sarah E. I., Costa, Tiago, Rosa, Gisella De, Drake, Alyssa B., Onoue, Masafusa

“…Abstract We present measurements of black hole masses and Eddington ratios ( λ Edd ) for a sample of 38 bright ( M 1450 < −24.4 mag) quasars at 5.8 ≲ z ≲ 7.5,…”
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Reionization history constraints from neural network based predictions of high-redshift quasar continua by Ďurovčíková, Dominika, Katz, Harley, Bosman, Sarah E I, Davies, Frederick B, Devriendt, Julien, Slyz, Adrianne

“…ABSTRACT Observations of the early Universe suggest that reionization was complete by z ∼ 6, however, the exact history of this process is still unknown. One…”
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Re-examining the case for neutral gas near the redshift 7 quasar ULAS J1120+0641 by Bosman, Sarah E. I., Becker, George D.

“…Signs of damping-wing absorption attenuating the Lyman α emission line of the first known z ∼ 7 quasar, ULAS J1120+0641, recently provided exciting evidence of…”
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The role of galaxies and AGN in reionizing the IGM – I. Keck spectroscopy of 5 < z < 7 galaxies in the QSO field J1148+5251 by Kakiichi, Koki, Ellis, Richard S, Laporte, Nicolas, Zitrin, Adi, Eilers, Anna-Christina, Ryan-Weber, Emma, Meyer, Romain A, Robertson, Brant, Stark, Daniel P, Bosman, Sarah E I

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Measuring the photoionization rate, neutral fraction, and mean free path of H i ionizing photons at 4.9 ≤ z ≤ 6.0 from a large sample of XShooter and ESI spectra by Gaikwad, Prakash, Haehnelt, Martin G, Davies, Fredrick B, Bosman, Sarah E I, Molaro, Margherita, Kulkarni, Girish, D’Odorico, Valentina, Becker, George D, Davies, Rebecca L, Nasir, Fahad, Bolton, James S, Keating, Laura C, Iršič, Vid, Puchwein, Ewald, Zhu, Yongda, Asthana, Shikhar, Yang, Jinyi, Lai, Samuel, Eilers, Anna-Christina

“…ABSTRACT We measure the mean free path ($\lambda _{\rm mfp,H\, \small {I}}$), photoionization rate ($\langle \Gamma _{\rm H\, \small {I}} \rangle$), and…”
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Chasing the Tail of Cosmic Reionization with Dark Gap Statistics in the Lyα Forest over 5 < z < 6 by Zhu, Yongda, Becker, George D., Bosman, Sarah E. I., Keating, Laura C., Christenson, Holly M., Bañados, Eduardo, Bian, Fuyan, Davies, Frederick B., D’Odorico, Valentina, Eilers, Anna-Christina, Fan, Xiaohui, Haehnelt, Martin G., Kulkarni, Girish, Pallottini, Andrea, Qin, Yuxiang, Wang, Feige, Yang, Jinyi

“…Abstract We present a new investigation of the intergalactic medium (IGM) near the end of reionization using “dark gaps” in the Ly α forest. Using spectra of…”
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When Spectral Modeling Meets Convolutional Networks: A Method for Discovering Reionization-era Lensed Quasars in Multiband Imaging Data by Andika, Irham Taufik, Jahnke, Knud, van der Wel, Arjen, Bañados, Eduardo, Bosman, Sarah E. I., Davies, Frederick B., Eilers, Anna-Christina, Jaelani, Anton Timur, Mazzucchelli, Chiara, Onoue, Masafusa, Schindler, Jan-Torge

“…Abstract Over the last two decades, around 300 quasars have been discovered at z ≳ 6, yet only one has been identified as being strongly gravitationally…”
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