Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Satyavolu, Sindhu"'
Autor:
Jin, Xiangyu, Yang, Jinyi, Fan, Xiaohui, Wang, Feige, Kakiichi, Koki, Meyer, Romain A., Becker, George D., Zou, Siwei, Bañados, Eduardo, Champagne, Jaclyn B., D'Odorico, Valentina, Yue, Minghao, Bosman, Sarah E. I., Cai, Zheng, Eilers, Anna-Christina, Hennawi, Joseph F., Jun, Hyunsung D., Li, Mingyu, Li, Zihao, Liu, Weizhe, Pudoka, Maria, Satyavolu, Sindhu, Sun, Fengwu, Tee, Wei Leong, Wu, Yunjing
Understanding when and how reionization happened is crucial for studying the early structure formation and the properties of first galaxies in the Universe. At $z>5.5$, the observed IGM optical depth shows a significant scatter, indicating an inhomog
Externí odkaz:
http://arxiv.org/abs/2410.01318
Autor:
Zhu, Yongda, Becker, George D., Bosman, Sarah E. I., Cain, Christopher, Keating, Laura C., Nasir, Fahad, D'Odorico, Valentina, Bañados, Eduardo, Bian, Fuyan, Bischetti, Manuela, Bolton, James S., Chen, Huanqing, D'Aloisio, Anson, Davies, Frederick B., Davies, Rebecca L., Eilers, Anna-Christina, Fan, Xiaohui, Gaikwad, Prakash, Greig, Bradley, Haehnelt, Martin G., Kulkarni, Girish, Lai, Samuel, Puchwein, Ewald, Qin, Yuxiang, Ryan-Weber, Emma V., Satyavolu, Sindhu, Spina, Benedetta, Walter, Fabian, Wang, Feige, Wolfson, Molly, Yang, Jinyi
Recent quasar absorption line observations suggest that reionization may end as late as $z \approx 5.3$. As a means to search for large neutral hydrogen islands at $z<6$, we revisit long dark gaps in the Ly$\beta$ forest in VLT/X-Shooter and Keck/ESI
Externí odkaz:
http://arxiv.org/abs/2405.12275
Autor:
Greig, Bradley, Mesinger, Andrei, Bañados, Eduardo, Becker, George D., Bosman, Sarah E. I., Chen, Huanqing, Davies, Frederick B., D'Odorico, Valentina, Eilers, Anna-Christina, Gallerani, Simona, Haehnelt, Martin G., Keating, Laura, Lai, Samuel, Qin, Yuxiang, Ryan-Weber, Emma, Satyavolu, Sindhu, Wang, Feige, Yang, Jinyi, Zhu, Yongda
The attenuation of Ly$\alpha$ photons by neutral hydrogen in the intergalactic medium (IGM) at $z\gtrsim5$ continues to be a powerful probe for studying the epoch of reionisation. Given a framework to estimate the intrinsic (true) Ly$\alpha$ emission
Externí odkaz:
http://arxiv.org/abs/2404.12585
Autor:
Ďurovčíková, Dominika, Eilers, Anna-Christina, Chen, Huanqing, Satyavolu, Sindhu, Kulkarni, Girish, Simcoe, Robert A., Keating, Laura C., Haehnelt, Martin G., Bañados, Eduardo
The spectra of high-redshift ($z\gtrsim 6$) quasars contain valuable information on the progression of the Epoch of Reionization (EoR). At redshifts $z<6$, the observed Lyman-series forest shows that the intergalactic medium (IGM) is nearly ionized,
Externí odkaz:
http://arxiv.org/abs/2401.10328
Autor:
Davies, Frederick B., Bosman, Sarah E. I., Gaikwad, Prakash, Nasir, Fahad, Hennawi, Joseph F., Becker, George D., Haehnelt, Martin G., D'Odorico, Valentina, Bischetti, Manuela, Eilers, Anna-Christina, Keating, Laura C., Kulkarni, Girish, Lai, Samuel, Mazzucchelli, Chiara, Qin, Yuxiang, Satyavolu, Sindhu, Wang, Feige, Yang, Jinyi, Zhu, Yongda
The variations in Ly$\alpha$ forest opacity observed at $z>5.3$ between lines of sight to different background quasars are too strong to be caused by fluctuations in the density field alone. The leading hypothesis for the cause of this excess varianc
Externí odkaz:
http://arxiv.org/abs/2312.08464
Measurements of the mean free path of Lyman-continuum photons in the intergalactic medium during the epoch of reionization can help constrain the nature of the sources as well as sinks of hydrogen-ionizing radiation. A recent approach to this measure
Externí odkaz:
http://arxiv.org/abs/2311.06344
Autor:
Zhu, Yongda, Becker, George D., Christenson, Holly M., D'Aloisio, Anson, Bosman, Sarah E. I., Bakx, Tom, D'Odorico, Valentina, Bischetti, Manuela, Cain, Christopher, Davies, Frederick B., Davies, Rebecca L., Eilers, Anna-Christina, Fan, Xiaohui, Gaikwad, Prakash, Haehnelt, Martin G., Keating, Laura C., Kulkarni, Girish, Lai, Samuel, Ma, Hai-Xia, Mesinger, Andrei, Qin, Yuxiang, Satyavolu, Sindhu, Takeuchi, Tsutomu T., Umehata, Hideki, Yang, Jinyi
The mean free path of ionizing photons, $\lambda_{\rm mfp}$, is a critical parameter for modeling the intergalactic medium (IGM) both during and after reionization. We present direct measurements of $\lambda_{\rm mfp}$ from QSO spectra over the redsh
Externí odkaz:
http://arxiv.org/abs/2308.04614
Autor:
Satyavolu, Sindhu, Eilers, Anna-Christina, Kulkarni, Girish, Ryan-Weber, Emma, Davies, Rebecca L., Becker, George D., Bosman, Sarah E. I., Greig, Bradley, Mazzucchelli, Chiara, Bañados, Eduardo, Bischetti, Manuela, D'Odorico, Valentina, Fan, Xiaohui, Farina, Emanuele Paolo, Haehnelt, Martin G., Keating, Laura C., Lai, Samuel, Walter, Fabian
Proximity zones of high-redshift quasars are unique probes of their central supermassive black holes as well as the intergalactic medium in the last stages of reionization. We present 22 new measurements of proximity zones of quasars with redshifts b
Externí odkaz:
http://arxiv.org/abs/2305.00998
Proximity zones of high-redshift quasars are unique probes of supermassive black hole formation, but simultaneously explaining proximity zone sizes and black hole masses has proved to be challenging. We study the robustness of some of the assumptions
Externí odkaz:
http://arxiv.org/abs/2209.08103
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