Zobrazeno 1 - 10
of 2 493
pro vyhledávání: '"A. Del Palacio"'
Autor:
Lin, Zikun, Wang, Yanan, del Palacio, Santiago, Méndez, Mariano, Zhang, Shuang-Nan, Russell, Thomas D., Ji, Long, Zhang, Jin, Zhang, Liang, Altamirano, Diego, Liu, Jifeng
We present a comprehensive study based on multi-wavelength observations from the NuSTAR, NICER, Swift, Fermi, NEOWISE, and ATCA telescopes during the 2022 outburst of the black hole X-ray binary IGR J17091-3624. Our investigation concentrates on the
Externí odkaz:
http://arxiv.org/abs/2408.01110
Autor:
Saha, Anindya, Tej, Anandmayee, del Palacio, Santiago, De Becker, Michaël, Benaglia, Paula, CH, Ishwara Chandra, Prajapati, Prachi
Publikováno v:
Bulletin de la Societe Royale des Sciences de Liege, 2024, Volume 93, No 2, 491-503
In recent years, systems involving massive stars with large wind kinetic power have been considered as promising sites for investigating relativistic particle acceleration in low radio frequencies. With this aim, we observed two Wolf-Rayet systems, W
Externí odkaz:
http://arxiv.org/abs/2406.16480
Autor:
Zubieta, E., Garcia, F., del Palacio, S., Furlan, S. B. Araujo, Gancio, G., Lousto, C. O., Combi, J. A., Espinoza, C. M.
Context. Pulsars have a very stable rotation. However, sudden increases in their rotation frequency known as glitches, perturb their evolution. While large glitches are commonly detected, small glitches are harder to detect because of the lack of dai
Externí odkaz:
http://arxiv.org/abs/2406.17099
Autor:
De Becker, Michael, del Palacio, Santiago, Benaglia, Paula, Tej, Anandmayee, Marcote, Benito, Romero, Gustavo Esteban, Bosch-Ramon, Valenti, Ishwara-Chandra, C. H.
Publikováno v:
Bulletin de la Soci\'et\'e Royale des Sciences de Li\`ege, 2024, Volume 93, No 2, 536-543
Galactic cosmic rays (GCRs) constitute a significant part of the energy budget of our Galaxy, and the study of their accelerators is of high importance in modern astrophysics. Their main sources are likely supernova remnants (SNRs). These objects are
Externí odkaz:
http://arxiv.org/abs/2406.14195
Autor:
Piras, S., Horellou, C., Conway, J. E., Thomasson, M., del Palacio, S., Shimwell, T. W., O'Sullivan, S. P., Carretti, E., Šnidaric, I., Jelic, V., Adebahr, B., Berger, A., Best, P. N., Brüggen, M., Ruiz, N. Herrera, Paladino, R., Prandoni, I., Sabater, J., Vacca, V.
The aim of this study is to probe the sub-mJy polarized source population with LOFAR. We present the method used to stack LOFAR polarization datasets, the resulting catalog of polarized sources, and the derived polarized source counts. The ELAIS-N1 f
Externí odkaz:
http://arxiv.org/abs/2406.08346
Autor:
Kun, Emma, Bartos, Imre, Tjus, Julia Becker, Biermann, Peter L., Franckowiak, Anna, Halzen, Francis, del Palacio, Santiago, Woo, Jooyun
The first high-energy neutrino source identified by IceCube was a blazar -- an active galactic nucleus driving a relativistic jet towards Earth. Jets driven by accreting black holes are commonly assumed to be needed for high-energy neutrino productio
Externí odkaz:
http://arxiv.org/abs/2404.06867
Autor:
Shablovinskaya, E., Ricci, C., Chang, C-S., Tortosa, A., del Palacio, S., Kawamuro, T., Aalto, S., Arzoumanian, Z., Balokovic, M., Bauer, F. E., Gendreau, K. C., Ho, L. C., Kakkad, D., Kara, E., Koss, M. J., Liu, T., Loewenstein, M., Mushotzky, R., Paltani, S., Privon, G. C., Smith, K., Tombesi, F., Trakhtenbrot, B.
Publikováno v:
A&A 690, A232 (2024)
The origin of a compact millimeter (mm, 100-250 GHz) emission in radio-quiet active galactic nuclei (RQ AGN) remains debated. Recent studies propose a connection with self-absorbed synchrotron emission from the accretion disk X-ray corona. We present
Externí odkaz:
http://arxiv.org/abs/2403.19524
Autor:
Furlan, Susana Beatriz Araujo, Zubieta, Ezequiel, Gancio, Guillermo, Romero, Gustavo Esteban, del Palacio, Santiago, García, Federico, Lousto, Carlos Oscar, Combi, Jorge Ariel
Currently, 6 out of 30 known magnetars had pulsed radio emission detected. In this work, we evaluated the possibility of detecting radio transient events from magnetars with the telescopes of the Instituto Argentino de Radioastronom\'ia (IAR). To thi
Externí odkaz:
http://arxiv.org/abs/2312.16333
Autor:
Wang, Yanan, Pasham, Dheeraj R., Altamirano, Diego, Gurpide, Andres, Segura, Noel Castro, Middleton, Matthew, Ji, Long, del Palacio, Santiago, Guolo, Muryel, Gandhi, Poshak, Zhang, Shuang-Nan, Remillard, Ronald, Lin, Dacheng, Masterson, Megan, Baldi, Ranieri D., Tombesi, Francesco, Miller, Jon M., Zhang, Wenda, Sanna, Andrea
The tidal disruption of a star around a supermassive black hole (SMBH) offers a unique opportunity to study accretion onto a SMBH on a human-timescale. We present results from our 1000+ days NICER, Swift and Chandra monitoring campaign of AT 2019avd,
Externí odkaz:
http://arxiv.org/abs/2312.13543
Autor:
Zubieta, Ezequiel, del Palacio, Santiago, García, Federico, Furlan, Susana Beatriz Araujo, Gancio, Guillermo, Lousto, Carlos Oscar, Combi, Jorge Ariel
Pulsars are known for their exceptionally stable rotation. However, this stability can be disrupted by glitches, sudden increases in rotation frequency whose cause is poorly understood. In this study, we present some preliminary results from the puls
Externí odkaz:
http://arxiv.org/abs/2312.08188