134 citations · 1.2k across the 51 of their papers we have counts for
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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…
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…
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…
Search for particle acceleration in two massive Wolf-Rayet stars using uGMRT observations
Anindya Saha, Anandmayee Tej, Santiago del Palacio +4
Large wind kinetic power of Wolf-Rayet (WR) stars make them ideal targets in low radio frequencies to search for non-thermal emission due to relativistic particle acceleration. In…
Confirmation of two magnetic cataclysmic variables as polars: 1RXS J174320.1-042953 and YY Sex
Nikita Rawat, J. C. Pandey, Arti Joshi +5
We present our analysis of new and archived observations of two candidate magnetic cataclysmic variables, namely 1RXS J174320.1-042953 and YY Sex. 1RXS J174320.1-042953 was observe…
Evidence for non-thermal X-ray emission from the double WR colliding-wind binary Apep
S. del Palacio, F. García, M. De Becker +5
Context: Massive colliding-wind binaries (CWBs) can be non-thermal sources. The emission produced in their wind-collision region (WCR) encodes information of both the shocks proper…
The non-thermal emission from the colliding-wind binary Apep
S. del Palacio, P. Benaglia, M. De Becker +2
The recently discovered massive binary system Apep is the most powerful synchrotron emitter among the known Galactic colliding-wind binaries. This makes this particular system of g…
Quest for the upcoming periastron passage of an episodic dust maker and particle accelerating colliding wind binary: WR 125
Bharti Arora, J. C. Pandey, M. De Becker +4
We have carried out a long term infrared and X-ray investigation of the colliding wind binary WR 125 (WC7+O9III). The source was monitored using AstroSat-Soft X-ray Telescope and T…
An investigation into the fraction of particle accelerators among colliding-wind binaries. Towards an extension of the catalogue
M. De Becker, P. Benaglia, G. E. Romero +1
Particle-accelerating colliding-wind binaries (PACWBs) are multiple systems made of early-type stars able to accelerate particles up to relativistic velocities. The relativistic pa…
Long-term XMM-Newton investigation of two particle-accelerating colliding-wind binaries in NGC6604: HD168112 and HD167971
M. De Becker
The long-term (over more than one decade) X-ray emission from two massive stellar systems known to be particle accelerators is investigated using XMM-Newton. Their X-ray properties…
Catalogue of particle-accelerating colliding-wind binaries
M. De Becker, F. Raucq
Massive systems made of two or more stars are known to be the site for interesting physical processes -- including at least in some cases -- particle acceleration. Over the past de…
The Hot and Energetic Universe: Star formation and evolution
S. Sciortino, G. Rauw, M. Audard +16
Stars over a wide range of masses and evolutionary stages are nowadays known to emit X-rays. This X-ray emission is a unique probe of the most energetic phenomena occurring in the…
The X-ray under-luminosity of the O-type supergiants HD16691 and HD14947 revealed by XMM-Newton
M. De Becker
The members of the scarce category of Of^+ supergiants present properties that are intermediate between regular O-stars and Wolf-Rayet (WR) stars. Significant similarities between…
Multiwavelength Observations of Gamma-ray Binary Candidates
M. Virginia McSwain, Masha Chernyakova, Denis Malishev +2
A rare group of high mass X-ray binaries (HMXBs) are known that also exhibit MeV, GeV, and/or TeV emission ("gamma-ray binaries"). Expanding the sample of gamma-ray binaries and id…
Is the bowshock of the runaway massive star HD 195592 a Fermi source?
M. V. del Valle, G. E. Romero, M. De Becker
HD 195592 is an O-type super-giant star, known as a well-established runaway. Recently, a Fermi gamma-ray source (2FGL J2030.7+4417) with a position compatible with that of HD 1955…
Massive non-thermal radio emitters: new data and their modelling
D. Volpi, R. Blomme, M. De Becker +1
During recent years some non-thermal radio emitting OB stars have been discovered to be binary, or multiple systems. The non-thermal emission is due to synchrotron radiation that i…
Non-thermal radio emission from colliding-wind binaries: modelling Cyg OB2 No. 8A and No. 9
Delia Volpi, Ronny Blomme, Michael De Becker +1
Some OB stars show variable non-thermal radio emission. The non-thermal emission is due to synchrotron radiation that is emitted by electrons accelerated to high energies. The elec…
HD 259440: The Proposed Optical Counterpart of the gamma-ray Binary HESS J0632+057
Christina Aragona, M. Virginia McSwain, Michael De Becker
HD 259440 is a B0pe star that was proposed as the optical counterpart to the gamma-ray source HESS J0632+057. Here we present optical spectra of HD 259440 acquired to investigate t…