Zobrazeno 1 - 10
of 185
pro vyhledávání: '"Bosman, Sarah E. I."'
The escaping ionising efficiency from galaxies, $f_{\rm esc}\xi_{\rm ion}$, is a crucial ingredient for understanding their contribution to hydrogen reionisation, but both of its components, $f_{\rm{esc}}$ and $\xi_{\rm{ion}}$, are extremely difficul
Externí odkaz:
http://arxiv.org/abs/2409.08315
Autor:
Onoue, Masafusa, Ding, Xuheng, Silverman, John D., Matsuoka, Yoshiki, Izumi, Takuma, Strauss, Michael A., Ward, Charlotte, Phillips, Camryn L., Andika, Irham T., Aoki, Kentaro, Arita, Junya, Baba, Shunsuke, Bieri, Rebekka, Bosman, Sarah E. I., Eilers, Anna-Christina, Fujimoto, Seiji, Habouzit, Melanie, Haiman, Zoltan, Imanishi, Masatoshi, Inayoshi, Kohei, Ito, Kei, Iwasawa, Kazushi, Jahnke, Knud, Kashikawa, Nobunari, Kawaguchi, Toshihiro, Kohno, Kotaro, Lee, Chien-Hsiu, Li, Junyao, Lupi, Alessandro, Lyu, Jianwei, Nagao, Tohru, Overzier, Roderik, Schindler, Jan-Torge, Schramm, Malte, Scoggins, Matthew T., Shimasaku, Kazuhiro, Toba, Yoshiki, Trakhtenbrot, Benny, Trebitsch, Maxime, Treu, Tommaso, Umehata, Hideki, Venemans, Bram, Vestergaard, Marianne, Volonteri, Marta, Walter, Fabian, Wang, Feige, Yang, Jinyi, Zhang, Haowen
Understanding the rapid formation of supermassive black holes (SMBHs) in the early universe requires an understanding of how stellar mass grows in the host galaxies. Here, we perform an analysis of rest-frame optical spectra and imaging from JWST of
Externí odkaz:
http://arxiv.org/abs/2409.07113
Autor:
Jiang, Danyang, Onoue, Masafusa, Jiang, Linhua, Lai, Samuel, Banados, Eduardo, Becker, George D., Bischetti, Manuela, Bosman, Sarah E. I., Davies, Rebecca L., DOdorico, Valentina, Farina, Emanuele Paolo, Haehnelt, Martin G., Mazzucchelli, Chiara, Schindler, Jan-Torge, Walter, Fabian, Zhu, Yongda
The Fe II/Mg II emission line flux ratio in quasar spectra serves as a proxy for the relative Fe to alpha-element abundances in the broad line regions of quasars. Due to the expected different enrichment timescales of the two elements, they can be us
Externí odkaz:
http://arxiv.org/abs/2409.06174
Autor:
Iani, Edoardo, Rinaldi, Pierluigi, Caputi, Karina I., Annunziatella, Marianna, Langeroodi, Danial, Melinder, Jens, Pérez-González, Pablo G., Álvarez-Márquez, Javier, Boogaard, Leindert A., Bosman, Sarah E. I., Costantin, Luca, Moutard, Thibaud, Colina, Luis, Östlin, Göran, Greve, Thomas R., Wright, Gillian, Alonso-Herrero, Almudena, Bik, Arjan, Gillman, Steven, Gómez, Alejandro Crespo, Hjorth, Jens, Labiano, Alvaro, Pye, John P., Tikkanen, Tuomo V., van der Werf, Paul P.
We present Virgil, a MIRI extremely red object (MERO) detected with the F1000W filter as part of the MIRI Deep Imaging Survey (MIDIS) observations of the Hubble Ultra Deep Field (HUDF). Virgil is a Lyman-$\alpha$ emitter (LAE) at $z_{spec} = 6.6312\p
Externí odkaz:
http://arxiv.org/abs/2406.18207
The history of reionization reflects the cumulative injection of ionizing photons by sources and the absorption of ionizing photons by sinks. The latter process is traditionally described in terms of a "clumping factor" which encodes the average quad
Externí odkaz:
http://arxiv.org/abs/2406.18186
Autor:
Onorato, Silvia, Hennawi, Joseph F., Schindler, Jan-Torge, Yang, Jinyi, Wang, Feige, Barth, Aaron J., Bañados, Eduardo, Eilers, Anna-Christina, Bosman, Sarah E. I., Davies, Frederick B., Venemans, Bram P., Mazzucchelli, Chiara, Belladitta, Silvia, Vito, Fabio, Farina, Emanuele Paolo, Andika, Irham T., Fan, Xiaohui, Walter, Fabian, Decarli, Roberto, Onoue, Masafusa, Nanni, Riccardo
We present optical and near-infrared (NIR) spectroscopic observations for a sample of $45$ quasars at $6.50 < z \leq 7.64$ with absolute magnitudes at $1450$ {\AA} in the range $-28.82 \leq M_{1450} \leq -24.13$ and their composite spectrum. The medi
Externí odkaz:
http://arxiv.org/abs/2406.07612
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
Publikováno v:
A&A 688, L26 (2024)
Recent observations have positioned the endpoint of the Epoch of Reionisation (EoR) at redshift $z \sim 5.3$. However, observations of the Lyman-$\alpha$ forest have not yet been able to discern whether reionisation occurred slowly and late, with sub
Externí odkaz:
http://arxiv.org/abs/2405.12273
Autor:
Jiang, Linhua, Fu, Shuqi, Wang, Feige, Bosman, Sarah E. I., Cai, Zheng, Jun, Hyunsung D., Pan, Zhiwei, Sun, Fengwu, Yang, Jinyi, Zhang, Huanian
We present constraints on the spacetime variation of the fine-structure constant $\alpha$ at redshifts $3
Externí odkaz:
http://arxiv.org/abs/2405.08977
Autor:
Greig, Bradley, Mesinger, Andrei, Bañados, Eduardo, Becker, George D., Bosman, Sarah E. I., Chen, Huanqing, Davies, Frederick B., D'Odorico, Valentina, Eilers, Anna-Christina, Gallerani, Simona, Haehnelt, Martin G., Keating, Laura, Lai, Samuel, Qin, Yuxiang, Ryan-Weber, Emma, Satyavolu, Sindhu, Wang, Feige, Yang, Jinyi, Zhu, Yongda
The attenuation of Ly$\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