56 citations · 487 across the 25 of their papers we have counts for
25 papers
Radio polarization from runaway star bowshocks-I. The general case
M. V. del Valle, R Santos-Lima, M Pohl
High velocity stars move through the interstellar medium with V > 30 km/s. When the star has powerful winds, under the appropriate conditions, the interaction of the wind with the…
Chasing Gravitational Waves with the Cherenkov Telescope Array
Jarred Gershon Green, Alessandro Carosi, Lara Nava +563
The detection of gravitational waves from a binary neutron star merger by Advanced LIGO and Advanced Virgo (GW170817), along with the discovery of the electromagnetic counterparts…
Interpolation of Instrument Response Functions for the Cherenkov Telescope Array in the Context of pyirf
Rune Michael Dominik, Maximilian Linhoff, Julian Sitarek
The Cherenkov Telescope Array (CTA) will be the next generation ground-based very-high-energy gamma-ray observatory, constituted by tens of Imaging Atmospheric Cherenkov Telescopes…
Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope Array
Guillaume Grolleron, Josefa Becerra González, Jonathan Biteau +13
Blazars are active galactic nuclei (AGN) with a relativistic jet oriented toward the observer. This jet is composed of accelerated particles which can display emission over the ent…
Performance update of an event-type based analysis for the Cherenkov Telescope Array
Juan Bernete, Orel Gueta, Tarek Hassan +3
The Cherenkov Telescope Array (CTA) will be the next-generation observatory in the field of very-high-energy (20 GeV to 300 TeV) gamma-ray astroparticle physics. The traditional ap…
Dark matter searches in dwarf spheroidal galaxies with the Cherenkov Telescope Array
Francesco Gabriele Saturni, Michele Doro, Aldo Morselli +1
Dark matter (DM) is one of the major components in the Universe. However, at present its existence is still only inferred through indirect astronomical observations. DM particles c…
Sensitivity of the Cherenkov Telescope Array to TeV photon emission from the Large Magellanic Cloud
The Cherenkov Telescope Array Consortium
A deep survey of the Large Magellanic Cloud at ~0.1-100TeV photon energies with the Cherenkov Telescope Array is planned. We assess the detection prospects based on a model for the…
ASTRI Mini-Array Core Science at the Observatorio del Teide
S. Vercellone, C. Bigongiari, A. Burtovoi +84
The ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) Project led by the Italian National Institute for Astrophysics (INAF) is developing and will deploy at the Obse…
Gamma rays from reaccelerated cosmic rays in high velocity clouds colliding with the Galactic disk
Maria Victoria del Valle
High velocity clouds moving toward the disk will reach the Galactic plane and will inevitably collide with the disk. In these collisions a system of two shocks is produced, one pro…
Possible Association of Two Stellar Bowshocks with Unidentified Fermi Sources
E. Sánchez-Ayaso, María V. del Valle, J. Martí +2
The bowshocks of runaway stars had been theoretically proposed as gamma-ray sources. However, this hypothesis has not been confirmed by observations up to date. In this paper, we p…
High-energy radiation from collisions of high velocity clouds and the Galactic disk
Maria Victoria del Valle, Ana Laura Müller, Gustavo E. Romero
High-velocity clouds (HVCs) are interstellar clouds of atomic hydrogen that do not partake of the Galactic rotation and have velocities of a several hundred kilometers per second.…
A model for the repeating FRB 121102 in the AGN scenario
Florencia L. Vieyro, Gustavo E. Romero, Valentí Bosch-Ramon +2
Fast radio bursts, or FRBs, are transient sources of unknown origin. Recent radio and optical observations have provided strong evidence for an extragalactic origin of the phenomen…
Properties of the First-order Fermi acceleration in fast magnetic reconnection driven by turbulence in collisional MHD flows
M. V. del Valle, E. M. de Gouveia Dal Pino, G. Kowal
Fast magnetic reconnection may occur in different astrophysical sources, producing flare-like emission and particle acceleration. Currently, this process is being studied as an eff…
Magnetic Reconnection on Jet-Accretion disk Systems
Elisabete M. de Gouveia Dal Pino, Maria Victoria del Valle, Luis H. S. Kadowaki +4
Fast Magnetic Reconnection is currently regarded as an important process also beyond the solar system, specially in magnetically dominated regions of galactic and extragalactic sou…
Turbulence-induced magnetic fields in shock precursors
Maria Victoria del Valle, Alexandre Lazarian, Reinaldo Santos-Lima
Galactic cosmic rays are believed to be mostly accelerated at supernova shocks. However, the interstellar magnetic field is too weak to efficiently accelerate galactic cosmic rays…
A mechanism for fast radio bursts
Gustavo E. Romero, Maria Victoria del Valle, Florencia L. Vieyro
Fast radio bursts are mysterious transient sources likely located at cosmological distances. The derived brightness temperatures exceed by many orders of magnitude the self-absorpt…
Runaway stars as cosmic ray injectors inside molecular clouds
Maria Victoria del Valle, Gustavo E. Romero, Reinaldo Santos-Lima
Giant molecular clouds (GMCs) are a new population of gamma-ray sources, being the target of cosmic rays (CRs) -- locally accelerated or not --. These clouds host very young stella…
Cosmic reionization by primordial cosmic rays
Matias Tueros, Maria Victoria del Valle, Gustavo Esteban Romero
After the so-called cosmic recombination, the expanding universe entered into a period of darkness since most of the matter was in a neutral state. About a billion years later, how…
A magnetic reconnection model for explaining the multi-wavelength emission of the microquasars Cyg X-1 and Cyg X-3
Behrouz Khiali, Elisabete M. de Gouveia Dal Pino, Maria V. del Valle
Recent studies have indicated that cosmic ray acceleration by a first-order Fermi process in magnetic reconnection current sheets can be efficient enough in the surrounds of compac…
Runaway massive stars as variable gamma-ray sources
Maria V. del Valle, Gustavo E. Romero
Runaway stars are ejected from their formation sites well within molecular cores in giant dark clouds. Eventually, these stars can travel through the molecular clouds, which are hi…
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…
AE Aurigae: first detection of non-thermal X-ray emission from a bow shock produced by a runaway star
J. Lopez-Santiago, M. Miceli, M. V. del Valle +6
Runaway stars produce shocks when passing through interstellar medium at supersonic velocities. Bow shocks have been detected in the mid-infrared for several high-mass runaway star…
Non-thermal processes in bowshocks of runaway stars. Application to Zeta Oph
María Victoria del Valle, Gustavo E. Romero
Runaway massive stars are O- and B-type stars with high spatial velocities with respect to the interstellar medium. These stars can produce bowshocks in the surrounding gas. Bowsho…
High-energy radiation from T Tauri stars
Gustavo E. Romero, María V. del Valle, Josep Martí +1
T Tauri stars are young, low mass, pre-main sequence stars surrounded by an accretion disk. These objects present strong magnetic activity and powerful magnetic reconnection events…