Zobrazeno 1 - 10
of 520
pro vyhledávání: '"Romero, Gustavo E."'
Autor:
Combi, Luciano, Yang, Huan, Gutierrez, Eduardo, Noble, Scott C., Romero, Gustavo E., Campanelli, Manuela
We present the first dynamical model of plasma accretion onto traversable wormholes by performing General Relativistic magneto-hydrodynamical (GRMHD) simulations of the flow on both sides of the wormhole. We evolve the ideal MHD equations on a wormho
Externí odkaz:
http://arxiv.org/abs/2405.06900
Autor:
Combi, Jorge A., Fogantini, Federico A., Saavedra, Enzo A., Romero, Gustavo E., Abaroa, Leandro, García, Federico, Luque-Escamilla, Pedro, Martí, Josep, Cruz-Sanchez, Nelson
Publikováno v:
A&A 686, A121 (2024)
We present an X-ray analysis of three different XMM-Newton observations together with simultaneous NICER and NuSTAR observations of the ultraluminous X-ray source NGC 4190 ULX-1. Our goal is to constrain the structure of the accretion disk and the ge
Externí odkaz:
http://arxiv.org/abs/2403.12300
Autor:
Romero, Gustavo E.
I present a brief review of the history of the Instituto Argentino de Radioastronom\'ia, a description of its current facilities and projects, and a view of his prospects for the future.
Comment: 15 pages, 33 figures, RevMexAA (Serie de Conferen
Comment: 15 pages, 33 figures, RevMexAA (Serie de Conferen
Externí odkaz:
http://arxiv.org/abs/2312.10262
Autor:
Saavedra, Enzo A., Fogantini, Federico A., Escobar, Gastón J., Romero, Gustavo E., Combi, Jorge A., Marcel, Estefania
Publikováno v:
A&A 680, A88 (2023)
4FGL J1405.1-6119 is a high-mass $\gamma$-ray emitting binary that has been studied at several wavelengths. The nature of this type of binary is still under debate, with three possible scenarios usually invoked to explain the origin of the $\gamma$-r
Externí odkaz:
http://arxiv.org/abs/2310.11553
We report on the presence of very rapid hard X-ray variability in the $\gamma$-ray binary LS I +61 303. The results were obtained by analysing NuSTAR data, which show two achromatic strong flares on ks time-scales before apastron. The Swift-BAT orbit
Externí odkaz:
http://arxiv.org/abs/2308.00784
Autor:
Roy, Abhradeep, Gupta, Alok C., Chitnis, Varsha R., Cellone, Sergio A., Raiteri, Claudia M., Romero, Gustavo E., Wiita, Paul J., Chatterjee, Anshu, Combi, Jorge A., Liao, Mai, Sarkar, Arkadipta, Villata, Massimo
We present a long-term and intraday variability study on optical multiwaveband ($U\!BV\!RI$) data from the blazar AO 0235+164 collected by various telescopes for $\sim$44 years (1975--2019). The blazar was found to be significantly variable over the
Externí odkaz:
http://arxiv.org/abs/2301.01944
Autor:
Sotomayor, Pablo, Romero, Gustavo E.
Publikováno v:
A&A 664, A178 (2022)
The radio emission mechanism in active galactic nuclei (AGN) with high accretion rates is unclear. It has been suggested that low-power jets may explain the observed radiation at sub-parsec scales. The mechanisms for jet formation at super-Eddington
Externí odkaz:
http://arxiv.org/abs/2206.10731