38 citations · 181 across the 35 of their papers we have counts for
38 papers
Resolving the heart of the Wolf-Rayet binary Apep with ALMA
S. del Palacio, W. Vlemmings, M. Fernández-López +5
The Wolf-Rayet (WR) phase is a critical stage in the evolution of massive stars. During this phase, the stars experience a large mass loss in the form of fast winds that are enrich…
The influence of free-free absorption on the radio spectrum of Particle-Accelerating Colliding-Wind Binaries
Michaël De Becker, Agustina Belen Blanco, Mathilde Tasseroul +4
The study of massive stars in binary and higher-multiplicity systems that participate in particle acceleration is a key topic at the crossroads of massive star physics, shock physi…
Radio Emission with Dust: A Bow-Shock Interpretation for the TDE Candidate AT 2019avd
Shuyuan Wei, Yanan Wang, Guobin Mou +5
Forward shocks produced by interactions between a single ejected blob and the circumnuclear medium (CNM) around a supermassive black hole are widely invoked to explain radio emissi…
Single-pulse reanalysis of the 2024 Vela glitch and new observations of PSR~J04374715 and PSR~J16444559
Carlos O. Lousto, Ruby Shrestha, Ezequiel Zubieta +6
The Pulsar Monitoring in Argentina (PuMA) collaboration systematically monitors southern glitching pulsars, maintaining high-cadence single-pulse records of the Vela pulsar. We pre…
Periodic activity on the (sub)mm surface of the AGB star Mira A
M. Andriantsaralaza, B. Bojnordi Arbab, W. Vlemmings +7
Evolved stars on the asymptotic giant branch (AGB) lose mass through stellar winds launched from their dynamic extended atmospheres. Recent high-angular-resolution observations of…
A giant magnetic eruption from the asymptotic giant branch star Mira A
W. Vlemmings, M. Andriantsaralaza, B. Bojnordi Arbab +14
Mass loss during the advanced evolutionary stages of low- and intermediate-mass stars is traditionally attributed to dust-driven winds, whereas the influence of magnetic fields rem…
First fast radio burst search campaign at the Argentine Institute of Radio Astronomy
Carlos O. Lousto, Harsh Prajapati, Ezequiel Zubieta +7
Fast radio bursts (FRBs) are intense millisecond-duration radio transients of extragalactic origin whose physical nature remains under active investigation, and which also serve as…
Enabling population studies on wind-driven Galactic binary systems
B. Marcote, P. Benaglia, V. Bosch-Ramon +8
Galactic binaries driven by stellar wind shocks, such as colliding wind binaries (CWBs) and gamma-ray binaries (gBs), harbor one of the most efficient particle acceleration engines…
Correlation Between Hard X-Ray and Cosmic Neutrino Sources: From Obscured AGN to Blazars
Emma Kun, Imre Bartos, Claudio Ricci +5
The origin of high-energy astrophysical neutrinos remains a key open question in multimessenger astrophysics. A correlation between unabsorbed hard X-ray and high-energy neutrino l…
The Emerging Population of High-energy Emitting Radio Galaxies
G. Bruni, V. S. Paliya, D. J. Saikia +22
High-energy emission from radio galaxies provides a unique laboratory to study the connection between accretion, jet formation, and particle acceleration in active galactic nuclei…
The Millimeter/X-ray Relation in Rapidly Accreting Supermassive Black Holes at
Sophie M. Venselaar, Claudio Ricci, Santiago Del Palacio +12
A tight correlation between nuclear millimeter and X-ray emission has recently been found in nearby () and low-Eddington ratio () radio-quiet Active Ga…
Search for radio polarization in the particle-accelerating colliding-wind binaries WR 147 and HD 167971
A. B. Blanco, M. De Becker, P. Benaglia +1
Particle-accelerating colliding-wind binaries (PACWBs) are multiple systems of massive stars in which strong stellar winds collide, accelerating particles to relativistic energies.…
The PARADIGM Project II: Characterising Nuclear and Diffuse Radio Components in Local U/LIRGs
Geferson Lucatelli, Rob Beswick, Javier Moldón +14
Disentangling SF and AGN emission is essential for understanding galaxy evolution, yet remains challenging in merging systems where both processes are enhanced and spatially intert…
Upstream neutrino production and delayed jet emission in the blazar GB6 J1542+6129
Emma Kun, Imre Bartos, Breshna Hadi +7
We present a multimessenger case study of the blazar GB6 J1542+6129, examining whether its multiwavelength behavior is consistent with neutrino production in a compact region near…
Giant radio pulses in the magnetar XTE J1810-197 detected with the IAR's telescopes
S. B. Araujo Furlan, G. E. Romero, E. Zubieta +4
[...] We observed XTE J1810-197 between 29 September 2022 and 14 July 2023 with the radio telescopes at the Argentine Institute of Radioastronomy (IAR). We searched for single puls…
Unraveling the hybrid origins of the X-ray non-thermal emission from IGR J17091-3624
Zikun Lin, Yanan Wang, Santiago del Palacio +8
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 hol…
Timing irregularities and glitches from the pulsar monitoring campaign at IAR
E. Zubieta, F. Garcia, S. del Palacio +5
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 de…
Study of Wolf-Rayet stars using uGMRT
Anindya Saha, Anandmayee Tej, Santiago del Palacio +4
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 r…
Investigating the Role of Pre-supernova Massive Stars in the Acceleration of Galactic Cosmic Rays
Michael De Becker, Santiago del Palacio, Paula Benaglia +5
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. Thei…
LOFAR Deep Fields: Probing the sub-mJy regime of polarized extragalactic sources in ELAIS-N1. I. The catalog
S. Piras, C. Horellou, J. E. Conway +16
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 pola…
Possible correlation between unabsorbed hard X-rays and neutrinos in radio-loud and radio-quiet AGN
Emma Kun, Imre Bartos, Julia Becker Tjus +5
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 hole…
Joint ALMA/X-ray monitoring of the radio-quiet type 1 AGN IC 4329A
E. Shablovinskaya, C. Ricci, C-S. Chang +20
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…
Prospects for Detecting Fast Transients with the Radio Telescopes of the Argentine Institute of Radio Astronomy
Susana Beatriz Araujo Furlan, Ezequiel Zubieta, Guillermo Gancio +5
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 te…
Rapid dimming followed by a state transition: a study of the highly variable nuclear transient AT 2019avd over 1000+ days
Yanan Wang, Dheeraj R. Pasham, Diego Altamirano +16
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…