Zobrazeno 1 - 10
of 1 671
pro vyhledávání: '"Kasper, E."'
Autor:
Katz, Harley, Cameron, Alex J., Saxena, Aayush, Barrufet, Laia, Choustikov, Nicholas, Cleri, Nikko J., de Graaff, Anna, Ellis, Richard S., Fosbury, Robert A. E., Heintz, Kasper E., Maseda, Michael, Matthee, Jorryt, McConchie, Ian, Oesch, Pascal A.
We study, from both a theoretical and observational perspective, the physical origin and spectroscopic impact of extreme nebular emission in high-redshift galaxies. The nebular continuum, which can appear during extreme starbursts, is of particular i
Externí odkaz:
http://arxiv.org/abs/2408.03189
Autor:
Heintz, Kasper E., Bennett, Jake S., Oesch, Pascal A., Sneppen, Albert, Rennehan, Douglas, Witstok, Joris, Smit, Renske, Vejlgaard, Simone, Terp, Chamilla, Koca, Umran S., Brammer, Gabriel B., Finlator, Kristian, Hayes, Matthew J., Sijacki, Debora, Naidu, Rohan P., Matthee, Jorryt, Valentino, Francesco, Tanvir, Nial R., Jakobsson, Páll, Laursen, Peter, Watson, Darach J., Davé, Romeel, Keating, Laura C., Covelo-Paz, Alba
Galaxy clusters are the most massive, gravitationally-bound structures in the Universe, emerging through hierarchical structure formation of large-scale dark matter and baryon overdensities. Early galaxy ``proto-clusters'' are believed to be importan
Externí odkaz:
http://arxiv.org/abs/2407.06287
Autor:
Levan, Andrew J., Jonker, Peter G., Saccardi, Andrea, Malesani, Daniele Bjørn, Tanvir, Nial R., Izzo, Luca, Heintz, Kasper E., Sánchez, Daniel Mata, Quirola-Vásquez, Jonathan, Torres, Manuel A. P., Vergani, Susanna D., Schulze, Steve, Rossi, Andrea, D'Avanzo, Paolo, Gompertz, Benjamin, Martin-Carrillo, Antonio, Postigo, Antonio de Ugarte, Schneider, Benjamin, Yuan, Weimin, Ling, Zhixing, Zhang, Wenjie, Mao, Xuan, Liu, Yuan, Sun, Hui, Xu, Dong, Zhu, Zipei, Fernández, José Feliciano Agüí, Amati, Lorenzo, Bauer, Franz E., Campana, Sergio, Carotenuto, Francesco, Chrimes, Ashley, van Dalen, Joyce N. D., D'Elia, Valerio, Della Valle, Massimo, De Pasquale, Massimiliano, Dhillon, Vikram S., Galbany, Lluís, Gaspari, Nicola, Gianfagna, Giulia, Gomboc, Andreja, Habeeb, Nusrin, van Hoof, Agnes P. C., Hu, Youdong, Jakobsson, Pall, Julakanti, Yashaswi, Korth, Judith, Kouveliotou, Chryssa, Laskar, Tanmoy, Littlefair, Stuart P., Maiorano, Elisabetta, Mao, Jirong, Melandri, Andrea, Miller, M. Coleman, Mukherjee, Tamal, Oates, Samantha R., O'Brien, Paul, Palmerio, Jesse T., Parviainen, Hannu, Pieterse, Daniëlle L. A., Piranomonte, Silvia, Piro, Luigi, Pugliese, Giovanna, Ravasio, Maria E., Rayson, Ben, Salvaterra, Ruben, Sánchez-Ramírez, Rubén, Sarin, Nikhil, Shilling, Samuel P. R., Starling, Rhaana L. C., Tagliaferri, Gianpiero, Thakur, Aishwarya Linesh, Thöne, Christina C., Wiersema, Klaas, Worssam, Isabelle, Zafar, Tayyaba
The nature of the minute-to-hour long Fast X-ray Transients (FXTs) localised by telescopes such as Chandra, Swift, and XMM-Newton remains mysterious, with numerous models suggested for the events. Here, we report multi-wavelength observations of EP24
Externí odkaz:
http://arxiv.org/abs/2404.16350
Autor:
Sneppen, Albert, Watson, Darach, Damgaard, Rasmus, Heintz, Kasper E., Vieira, Nicholas, Väisänen, Petri, Mahoro, Antoine
The spectral features in the optical/near-infrared counterparts of neutron star mergers (kilonovae, KNe), evolve dramatically on hour timescales. To examine the spectral evolution we compile a temporal series complete at all observed epochs from 0.5
Externí odkaz:
http://arxiv.org/abs/2404.08730
Autor:
Terp, Chamilla, Heintz, Kasper E., Watson, Darach, Brammer, Gabriel, Carnall, Adam, Witstok, Joris, Smit, Renske, Vejlgaard, Simone
We present a comprehensive spectro-photometric analysis of the galaxy GS9422 from the JADES GTO survey located at $z=5.943$, anomalously showing a simultaneous strong Ly$\alpha$ emission feature and damped Ly$\alpha$ absorption (DLA), based on JWST N
Externí odkaz:
http://arxiv.org/abs/2404.06543
Autor:
Cueto, Elie Rasmussen, Hutter, Anne, Dayal, Pratika, Gottlöber, Stefan, Heintz, Kasper E., Mason, Charlotte, Trebitsch, Maxime, Yepes, Gustavo
Publikováno v:
A&A 686, A138 (2024)
Observations with JWST have revealed an unexpected high abundance of bright z>10 galaxy candidates. We explore whether a stellar initial mass function (IMF) that becomes increasingly top-heavy towards higher redshifts and lower gas-phase metallicitie
Externí odkaz:
http://arxiv.org/abs/2312.12109
Autor:
Killi, Meghana, Watson, Darach, Brammer, Gabriel, McPartland, Conor, Antwi-Danso, Jacqueline, Newshore, Rosa, Coe, Dan, Allen, Natalie, Fynbo, Johan P. U., Gould, Katriona, Heintz, Kasper E., Rusakov, Vadim, Vejlgaard, Simone
JWST has revealed a class of numerous, extremely compact sources, with rest-frame red optical/near-infrared (NIR) and blue ultraviolet (UV) colours, nicknamed "little red dots". We present one of the highest signal-to-noise ratio JWST NIRSpec/PRISM s
Externí odkaz:
http://arxiv.org/abs/2312.03065
Publikováno v:
A&A 688, A95 (2024)
Kilonovae (KNe) are one of the fastest types of optical transients known, cooling rapidly in the first few days following their neutron-star merger origin. We show here that KN spectral features go through rapid recombination transitions, with featur
Externí odkaz:
http://arxiv.org/abs/2312.02258
Autor:
Konstantopoulou, Christina, De Cia, Annalisa, Ledoux, Cédric, Krogager, Jens-Kristian, Mattsson, Lars, Watson, Darach, Heintz, Kasper E., Péroux, Céline, Noterdaeme, Pasquier, Andersen, Anja C., Fynbo, Johan P. U., Jermann, Iris, Ramburuth-Hurt, Tanita
Publikováno v:
A&A 681, A64 (2024)
The evolution of the cosmic dust content and the cycle between metals and dust in the interstellar medium (ISM) play a fundamental role in galaxy evolution. The chemical enrichment of the Universe can be traced through the evolution of the dust-to-me
Externí odkaz:
http://arxiv.org/abs/2310.07709
Autor:
Dong, Yuxin, Eftekhari, Tarraneh, Fong, Wen-fai, Deller, Adam T., Mannings, Alexandra G., Simha, Sunil, Sridhar, Navin, Rafelski, Marc, Gordon, Alexa C., Bhandari, Shivani, Day, Cherie K., Heintz, Kasper E., Hessels, Jason W. T., Leja, Joel, James, Clancy W., Kilpatrick, Charles D., Mahony, Elizabeth K., Marcote, Benito, Margalit, Ben, Nimmo, Kenzie, Prochaska, J. Xavier, Escorial, Alicia Rouco, Ryder, Stuart D., Schroeder, Genevieve, Shannon, Ryan M., Tejos, Nicolas
We present high-resolution 1.5 $-$ 6 GHz Karl G. Jansky Very Large Array (VLA) and Hubble Space Telescope (HST) optical and infrared observations of the extremely active repeating fast radio burst (FRB) FRB 20201124A and its barred spiral host galaxy
Externí odkaz:
http://arxiv.org/abs/2307.06995