37 citations · 131 across the 12 of their papers we have counts for
12 papers
Foreground and internal free-free absorption in particle-accelerating colliding-wind binaries : Insights from the radio emission of WR 147
M. Tasseroul, M. De Becker, A. B Blanco +2
Radio emission from massive binary systems is generally of composite nature, showing both a thermal emission component from the winds and a non-thermal component from relativistic…
Probing the detectability of electromagnetic signatures from Galactic isolated black holes
Javier Rodrigo Martinez, Valenti Bosch-Ramon, Florencia Laura Vieyro +1
Context: A large number of isolated black holes (IBHs) are expected to populate the Galaxy. However, only one has been confirmed by the analysis of a microlensing event, and no con…
Radio study of the colliding wind binary HD93129A near periastron and its surroundings
Paula Benaglia, Santiago del Palacio, Juliana Saponara +3
HD93129A is an O+O stellar system whose CWR has been mapped by high angular resolution observations at cm wavelengths. The synchrotron nature of the radio emission confirms its par…
The innermost jet in the hidden ultra-luminous X-ray source Cygnus X-3
Jun Yang, Federico García, Santiago del Palacio +6
Cygnus X-3 is a high-mass X-ray binary with a compact object accreting matter from a Wolf-Rayet donor star. Recently, it has been revealed by the Imaging X-ray Polarimetry Explorer…
Pulsar Observations at low latitudes and low frequencies
Carlos O. Lousto, R. Missel, E. Zubieta +6
The Pulsar Monitoring in Argentina (PuMA) is a collaboration between the Argentine Institute for Radioastronomy (IAR) and the Rochester Institute of Technology (RIT) that since 201…
Non-thermal emission in hyper-velocity and semi-relativistic stars
J. R. Martinez, S. del Palacio, V. Bosch-Ramon +1
Context. There is a population of runaway stars that move at extremely high speeds with respect to their surroundings. The fast motion and the stellar wind of these stars, plus the…
New insights in the HII region G18.88-0.49: hub-filament system and accreting filaments
L. K. Dewangan, D. K. Ojha, Saurabh Sharma +3
We present an analysis of multi-wavelength observations of an area of 0.27 deg x 0.27 deg around the Galactic HII region G18.88-0.49, which is powered by an O-type star (age ~10^5…
Bow-shocks, nova shells, disc winds and tilted discs: The Nova-Like V341 Ara Has It All
N. Castro Segura, C. Knigge, J. A. Acosta-Pulido +21
V341 Ara was recently recognised as one of the closest (d ~ 150 pc) and brightest (V~ 10) nova-like cataclysmic variables. This unique system is surrounded by a bright emission neb…
Probing the physical conditions and star formation processes in the Galactic HII region S305
L. K. Dewangan, Saurabh Sharma, Rakesh Pandey +5
We present multi-scale and multi-wavelength observations of the Galactic HII region S305, which is excited by massive O8.5V and O9.5V stars. Infrared images reveal an extended sphe…
The high-energy emission from HD~93129A near periastron
S. del Palacio, F. García, D. Altamirano +12
We conducted an observational campaign towards one of the most massive and luminous colliding wind binaries in the Galaxy, HD~93129A, close to its periastron passage in 2018. Durin…
Gamma rays from clumpy wind-jet interactions in high-mass microquasars
V. M. de la Cita, S. del Palacio, V. Bosch-Ramon +3
The stellar winds of the massive stars in high-mass microquasars are thought to be inhomogeneous. The interaction of these inhomogeneities, or clumps, with the jets of these object…
A model for the non-thermal emission of the very massive colliding-wind binary HD 93129A
Santiago del Palacio, Valentí Bosch-Ramon, Gustavo E. Romero +1
The binary stellar system HD 93129A is one of the most massive known binaries in our Galaxy. This system presents non-thermal emission in the radio band, which can be used to infer…