G. Gancio

Narrowband Searches for Continuous Gravitational Waves from known Pulsars in the First Two Parts of the Fourth LIGO–Virgo–KAGRA Observing Run

Adrian Abac, I. Abouelfettouh, F. Acernese, K. Ackley et autres

Abstract Rotating nonaxisymmetric neutron stars (NSs) are promising sources for continuous gravitational waves (CWs). CWs may, if detected, inform us about the internal structure and equation of state of NSs. Here, we present a narrowband search for CWs from known pulsars, for …

de, it, gb, au, us, in, fr, be, br, jp, nl, mx, kr (code pays fourni par la source)

Constraints on Gravitational Waves from the 2024 Vela Pulsar Glitch

Adrian Abac, I. Abouelfettouh, F. Acernese, K. Ackley et autres

Abstract Among known neutron stars, the Vela pulsar is one of the best targets for gravitational-wave searches. It is also one of the most prolific in terms of glitches, which are sudden frequency changes in a pulsar’s rotation. Such glitches could cause …

de, it, gb, au, us, in, fr, be, br, jp, nl, es, mx, kr (code pays fourni par la source)

Study of the 2024 major Vela glitch at the Argentine Institute of Radioastronomy

Ezequiel Zubieta, Ryan Missel, S. B. Araujo Furlan, Carlos O. Lousto et autres

Context. We report here on new results of the systematic monitoring of southern glitching pulsars at the Argentine Institute of Radioastronomy. In particular, we study in this work the new major glitch in the Vela pulsar (PSR J0835−4510) that occurred on 2024 …

ar, us, se (code pays fourni par la source)

Search for Continuous Gravitational Waves from Known Pulsars in the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run

Adrian Abac, Robert Abbott, I. Abouelfettouh, F Acernese et autres

Abstract Continuous gravitational waves (CWs) emission from neutron stars carries information about their internal structure and equation of state, and it can provide tests of general relativity. We present a search for CWs from a set of 45 known pulsars in the …

fr (code pays fourni par la source)

The Argentine Institute of Radio Astronomy and its Observatory: Present and Future

G. Gancio, Gustavo E. Romero

The Argentine Institute of Radio Astronomy (IAR) has been a cornerstone of Argentine radio astronomy since its inception in 1962. Located in the Province of Buenos Aires and supported by CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), CICPBA (Comisión de Investigaciones …

Glitch-induced pulse profile change of PSR J0742−2822 observed from the IAR

Ezequiel Zubieta, F. García, S. del Palacio, C. M. Espinoza et autres

Context. The radio pulsar PSR J0742−2822 is known to exhibit rapid changes between different pulse profile states that correlate with changes in its spin-down rate. However, the connection between these variations and the glitch activity of the pulsar remains unclear. Aims. We …

ar, se, cl, us, cn (code pays fourni par la source)

Multi-stage Optimization for the Multipurpose Interferometer Array

L. F. Cabral, Mariano Fernández-Corazza, G. Gancio, P. Benaglia

The antenna-elements that make up a radio interferometer form a spatial filter that defines the main characteristics of the instrument, such as the resolution of the synthesized beam and the sampled spatial frequencies together with their density. For this reason, it is …

ar (code pays fourni par la source)

Timing irregularities and glitches from the pulsar monitoring campaign at IAR

Ezequiel Zubieta, Federico García, S. del Palacio, S. B. Araujo Furlan et autres

Context. Pulsars have a very stable rotation overall. However, sudden increases in their rotation frequency, known as glitches, perturb their evolution. While many observatories commonly detect large glitches, small glitches are harder to detect because of the lack of daily cadence observations …

ar, se, us, cl (code pays fourni par la source)

Timing irregularities and glitches from the pulsar monitoring campaign at IAR

Ezequiel Zubieta, Federico García, S. del Palacio, S. B. Araujo Furlan et autres

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 detected, small glitches are harder to detect because of the lack of daily-cadence observations over long periods …

Prospects for Detecting Fast Transients with the Radio Telescopes of the Argentine Institute of Radio Astronomy

S. B. Araujo Furlan, Ezequiel Zubieta, G. Gancio, Gustavo E. Romero et autres

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 telescopes of the Instituto Argentino de Radioastronomía (IAR). To this aim, we made daily …

Updates on the glitching pulsar monitoring campaign performed from IAR

Ezequiel Zubieta, S. del Palacio, Federico García, S. B. Araujo Furlan et autres

Pulsars are known for their exceptionally stable rotation. However, this stability can be disrupted by glitches, sudden increases in rotation frequency whose cause is poorly understood. In this study, we present some preliminary results from the pulsar monitoring campaign conducted at the …

The Multipurpose Interferometric Array and the development of its technological demonstrator

Gustavo E. Romero, G. Gancio, P. Benaglia, J. M. González et autres

We present a proposal for the construction and development of a new instrument for radio astronomical observations based on interferometric techniques, that will provide high angular resolution in the 21 cm band, with the intention of improving and extending the current performance …