Publications

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1703 Publications visible to you, out of a total of 1703

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Date Published: 31st Jan 2025

Publication Type: Master's Thesis

Abstract

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Authors: Parameswaran Ajith, Pau Amaro Seoane, Manuel Arca Sedda, Riccardo Arcodia, Francesca Badaracco, Biswajit Banerjee, Enis Belgacem, Giovanni Benetti, Stefano Benetti, Alexey Bobrick, Alessandro Bonforte, Elisa Bortolas, Valentina Braito, Marica Branchesi, Adam Burrows, Enrico Cappellaro, Roberto Della Ceca, Chandrachur Chakraborty, Shreevathsa Chalathadka Subrahmanya, Michael W. Coughlin, Stefano Covino, Andrea Derdzinski, Aayushi Doshi, Maurizio Falanga, Stefano Foffa, Alessia Franchini, Alessandro Frigeri, Yoshifumi Futaana, Oliver Gerberding, Kiranjyot Gill, Matteo Di Giovanni, Ines Francesca Giudice, Margherita Giustini, Philipp Gläser, Jan Harms, Joris van Heijningen, Francesco Iacovelli, Bradley J. Kavanagh, Taichi Kawamura, Arun Kenath, Elisabeth-Adelheid Keppler, Chiaki Kobayashi, Goro Komatsu, Valeriya Korol, N. V. Krishnendu, Prayush Kumar, Francesco Longo, Michele Maggiore, Michele Mancarella, Andrea Maselli, Alessandra Mastrobuono-Battisti, Francesco Mazzarini, Andrea Melandri, Daniele Melini, Sabrina Menina, Giovanni Miniutti, Deeshani Mitra, Javier Morán-Fraile, Suvodip Mukherjee, Niccolò Muttoni, Marco Olivieri, Francesca Onori, Maria Alessandra Papa, Ferdinando Patat, Andrea Perali, Tsvi Piran, Silvia Piranomonte, Alberto Roper Pol, Masroor C. Pookkillath, R. Prasad, Vaishak Prasad, Alessandra De Rosa, Sourav Roy Chowdhury, Roberto Serafinelli, Alberto Sesana, Paola Severgnini, Angela Stallone, Jacopo Tissino, Hrvoje Tkalčić, Lina Tomasella, Martina Toscani, David Vartanyan, Cristian Vignali, Lucia Zaccarelli, Morgane Zeoli, Luciano Zuccarello

Date Published: 28th Jan 2025

Publication Type: Journal

Abstract

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Authors: Evgeni Ulanov, Ghulam A. Qadir, Kai Riedmiller, Pascal Friederich, Frauke Gräter

Date Published: 10th Jan 2025

Publication Type: Journal

Abstract

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Authors: Marcus Buchwald, Pascal Memmesheimer, Arash Dooghaie Moghadam, Ines Tuschner, Laura Santamaria Suarez, Timo Itzel, Christoph Antoni, Jimmy Daza, Catharina Gerhards, Michael Neumaier, Christop Brochhausen, Peter R. Galle, Matthias Ebert, Arndt Weinmann, Jürgen Hesser, Vincent Heuveline, Andreas Teufel

Date Published: 10th Jan 2025

Publication Type: Journal

Abstract

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Authors: Ghulam A. Qadir, Ying Sun

Date Published: 2025

Publication Type: Journal

Abstract

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Authors: Pratik Nag, Yiping Hong, Sameh Abdulah, Ghulam A. Qadir, Marc G. Genton, Ying Sun

Date Published: 2025

Publication Type: Journal

Abstract (Expand)

Context. Rotation is an important phenomenon influencing stellar structure and evolution, however, it has not been adequately modelled thus far. Therefore, accurate estimates of internal rotation rates are valuable for constraining stellar evolution models. Aims. We aim to assess the accuracy of asteroseismic estimates of internal rotation rates and how they depend on the fundamental stellar parameters. Methods. We applied the recently developed extended-multiplicative optimally localised averages (eMOLA) inversion method, to infer localised estimates of internal rotation rates of synthetic observations of red giants. We searched for suitable reference stellar models, following a grid-based approach, and we assessed the robustness of the resulting inferences with respect to the choice of reference model. Results. We find that matching the mixed-mode pattern between the observation and the reference model is an important criterion for selecting suitable reference models. We propose (i) selecting a set of reference models based on the correlation between the observed rotational splittings and the mode-trapping parameter; (ii) computing the rotation rates for all these models; and (iii) using the average value obtained across the whole set as the estimate of the internal rotation rates. We find that the effect of a near surface perturbation in the synthetic observations on the rotation rates estimated based on the correlation between the observed rotational splittings and the mode-trapping parameter is negligible. Conclusions. We conclude that when using an ensemble of reference models that are selected by matching the mixed-mode pattern, the input rotation rates can be recovered across a range of fundamental stellar parameters such as mass, mixing-length parameter, and composition. Further, red giant rotation rates determined in this way are also independent of any near-surface perturbation of the stellar structure.

Authors: F. Ahlborn, E. P. Bellinger, S. Hekker, S. Basu, D. Mokrytska

Date Published: 2025

Publication Type: Journal

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