Pedro L. Luque‐Escamilla

Search for signatures of outflow interaction around Cygnus X-3

Josep Martí, Pedro L. Luque‐Escamilla, V. Bosch-Ramón, Josep Maria Paredes

Abstract Cygnus X-3 is a microquasar hosting a Wolf–Rayet star, recently identified as a Galactic PeVatron and a potential ULX source. We analyzed high-resolution H i data to search for interstellar medium interaction signatures across all proposed distances. We identify a candidate …

es (code pays fourni par la source)

Constraints on the VHE Counterpart of Two Binary Black Hole Mergers Observed by the MAGIC and CTAO LST-1 Telescopes

K. Abe, S. Abe, Jayant Abhir, A. Abhishek et autres

Abstract We present very-high-energy gamma-ray observations of two binary black hole merger candidates, GW240615_113620 and GW241125_010116, performed with the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes and the first Large-Sized Telescope of the Cherenkov Telescope Array Observatory’s (CTAO LST-1). GW240615_113620 was the …

jp, ch, it, es, fr, us, de, hr, in, ec, br, pl, am, cz (code pays fourni par la source)

Spreading viscous fluids on a horizontal surface: Project-based learning in fluid mechanics

R. Bolaños-Jiménez, Pedro L. Luque‐Escamilla

The spreading of a thin viscous fluid film on a horizontal surface is an interesting problem in fluid mechanics with many practical applications ranging from coating processes to biological systems and environmental flows. It can even be observed in everyday situations, such …

es (code pays fourni par la source)

CTAO LST-1 observations of magnetar SGR 1935+2154: Deep limits on sub-second bursts and persistent tera-electronvolt emission

K. Abe, Shotaro Abe, A. Abhishek, F. Acero et autres

The Galactic magnetar SGR 1935+2154 has exhibited prolific high-energy (HE) bursting activity in recent years. Investigating its potential tera-electronvolt counterpart could provide insights into the underlying mechanisms of magnetar emission and very high-energy (VHE) processes in extreme astrophysical environments. We aim to …

fr, jp (code pays fourni par la source)

CTAO LST–1 observations of magnetar SGR 1935+2154: Deep limits on sub-second bursts and persistent tera-electronvolt emission

K. Abe, Shotaro Abe, A. Abhishek, F. Acero et autres

Context. The Galactic magnetar SGR 1935+2154 has exhibited prolific high-energy (HE) bursting activity in recent years. Aims. Investigating its potential tera-electronvolt counterpart could provide insights into the underlying mechanisms of magnetar emission and very high-energy (VHE) processes in extreme astrophysical environments. We …

jp, it, fr, us, es, ch, de, ec, br, pl, cz, hr, fi (code pays fourni par la source)

Alignment of radio jets in the microquasar V4641 Sagittarii with its high-energy structures

Josep Martí, Pedro L. Luque‐Escamilla

ABSTRACT V4641 Sagittarii (V4641 Sgr) is a unique Galactic microquasar system featuring a stellar-mass black hole accreting matter from a massive companion. One of its intriguing features is the presence of relativistic radio jets almost perpendicular to the observed extended gamma-ray emission, …

es (code pays fourni par la source)

Alignment of radio jets in the microquasar V4641 Sagittarii with its high-energy structures

Josep Martí, Pedro L. Luque‐Escamilla

V4641 Sagittarii (V4641 Sgr) is a unique Galactic microquasar system featuring a stellar-mass black hole accreting matter from a massive companion. One of its intriguing features is the presence of relativistic radio jets almost perpendicular to the observed extended gamma-ray emission, implying …

A MeerKAT view of the parsec-scale jets in the black-hole X-ray binary GRS 1758–258

I. Mariani, S. Motta, P. Atri, John H. L. Matthews et autres

Context. Jets from accreting black-hole (BH) X-ray binary (XRB) systems are powerful outflows that release a large fraction of the accretion energy to the surrounding environment, providing a feedback mechanism that may alter the properties of the interstellar medium (ISM). Studying accretion …

it, gb, nl, es, Afrique du Sud (code pays fourni par la source)

Prospects for dark matter observations in dwarf spheroidal galaxies with the Cherenkov Telescope Array Observatory

K. Abe, Shinsuke Abe, Jayant Abhir, A. Abhishek et autres

ABSTRACT The dwarf spheroidal galaxies (dSphs) orbiting the Milky Way are widely regarded as systems supported by velocity dispersion against self-gravity, and as prime targets for the search for indirect dark matter (DM) signatures in the GeV-to-TeV $\gamma$-ray range owing to their …

jp, fr, ch, ca, it, es, us, gb, cl, mx, br, Namibie, Afrique du Sud, au, ec, sk, de, ua, si, cz, hr, no, ie, th (code pays fourni par la source)

VHE γ-ray observations of bright BL Lacs with the Large-Sized Telescope prototype (LST-1) of the CTAO

K. Abe, Shotaro Abe, A. Abhishek, F. Acero et autres

ABSTRACT Cherenkov Telescope Array Observatory (CTAO) is the next-generation ground-based $\gamma$-ray observatory operating in the energy range from $20\, \mathrm{GeV}$ up to $300\, \mathrm{TeV}$, with two sites in La Palma (Spain) and Paranal (Chile). It will consist of telescopes of three sizes, …

jp, it, fr, es, ch, de, ec, br, pl, us, cz, hr, fi (code pays fourni par la source)

Constraining the TeV gamma-ray emission of SN 2024bch, a possible type IIn-L from a red supergiant progenitor

K. Abe, Shotaro Abe, A. Abhishek, F. Acero et autres

We present very high-energy optical photometry and spectroscopic observations of SN 2024bch in the nearby galaxy NGC 3206 (∼20 Mpc). We used gamma-ray observations performed with the first Large-Sized Telescope (LST-1) of the Cherenkov Telescope Array Observatory (CTAO) and optical observations with …

jp, it, fr, es, ch, de, ec, br, pl, cz, hr, fi (code pays fourni par la source)

A MeerKAT view of the parsec-scale jets in the black-hole X-ray binary GRS 1758-258

I. Mariani, S. E. Motta, P. Atri, JAMES H. MATTHEWS et autres

Jets from accreting black hole (BH) X-ray binaries (XRBs) are powerful outflows that release a large fraction of the accretion energy to the surrounding environment, providing a feedback mechanism that may alter the interstellar medium (ISM) properties. Studying accretion and feedback together …