O. Pyshna

SN 2024iss: A Multi-Wavelength Exposé of a Type IIb Supernova with an Early-Time Ultraviolet Spectrum and Shock Breakout Constraints

Rujula Yete, Wynn Jacobson-Galan, Ferdinand Ferdinand, Luc Dessart et autres

We present multi-wavelength observations and a comprehensive analysis of the nearby (D$\sim$14 Mpc) Type IIb supernova (SN IIb) 2024iss. Observations of SN2024iss include an early ZTF detection at $\sim$40 minutes after first light and the earliest Hubble Space Telescope UV spectrum for …

SN 2024iss: A Multi-Wavelength Exposé of a Type IIb Supernova with an Early-Time Ultraviolet Spectrum and Shock Breakout Constraints

Rujula Yete, Wynn Jacobson-Galan, Ferdinand Ferdinand, Luc Dessart et autres

We present multi-wavelength observations and a comprehensive analysis of the nearby (D$\sim$14 Mpc) Type IIb supernova (SN IIb) 2024iss. Observations of SN2024iss include an early ZTF detection at $\sim$40 minutes after first light and the earliest Hubble Space Telescope UV spectrum for …

A real-time search for Type Ia Supernovae with late-time interactions with circumstellar material in ZTF data

J. Terwel, K. Maguire, S. Brennan, L. Galbany et autres

While it is generally accepted that Type Ia supernovae (SNe Ia) are the terminal explosions of white dwarfs (WDs), the nature of their progenitor systems and the mechanisms that lead up to these explosions remain widely debated. In rare cases, the SN …

Limits on the ejecta mass during the search for kilonovae associated with neutron star-black hole mergers: A case study of S230518h, GW230529, S230627c and the low-significance candidate S240422ed

S. Antier, K. Ackley, Tomás Ahumada, Dalya Akl et autres

Neutron star-black hole (NSBH) mergers, detectable via their gravitational-wave (GW) emission, are expected to produce kilonovae (KNe). Four NSBH candidates have been identified and followed-up by more than fifty instruments since the start of the fourth GW observing run (O4), in May …

be, fr, gb, us, ae, br, it, kr, de, ge, cz, Égypte, bd, cl, th, ua, rs, uz, nl (code pays fourni par la source)

GRANDMA Observations of SN 2023wrk, a Luminous Type Ia Supernova with Significant Unburned Carbon in the Outer Ejecta

Cristina Andrade, Pierre-Alexandre Duverne, Jialian Liu, Felipe Navarete et autres

Abstract First detected on 2023 November 4 by the Gravitational-wave Optical Transient Observer, SN 2023wrk is a Type Ia Supernova at 40 Mpc, with significant unburned carbon in the outer ejecta. In this note, we present photometric and spectroscopic observations and analysis …

Early-time Observations of SN 2023wrk: A Luminous Type Ia Supernova with Significant Unburned Carbon in the Outer Ejecta

Jialian Liu, Xiaofeng Wang, Cristina Andrade, Pierre-Alexandre Duverne et autres

Abstract We present extensive photometric and spectroscopic observations of the nearby Type Ia supernova (SN) 2023wrk at a distance of about 40 Mpc. The earliest detection of this SN can be traced back to a few hours after the explosion. Within the …

fr (code pays fourni par la source)

Multiband analyses of the bright GRB 230812B and the associated SN2023pel

Thomas Hussenot-Desenonges, Thibeau Wouters, Nidhal Guessoum, I Abdi et autres

ABSTRACT GRB 230812B is a bright and relatively nearby (z = 0.36) long gamma-ray burst (GRB) that has generated significant interest in the community and has thus been observed over the entire electromagnetic spectrum. We report over 80 observations in X-ray, ultraviolet, …

fr, nl, ae, Égypte, es, us, ge, it, ua, cz, gr, uz, br, de, dk, az, cn, gb, sk, bg, cl (code pays fourni par la source)

Ready for O4 II: GRANDMA observations of Swift GRBs over eight weeks in spring 2022

I. Tosta e Melo, J.-G. Ducoin, Z. Vidadi, Cristina Andrade et autres

Aims. We present a campaign designed to train the Global Rapid Advanced Network Devoted to the Multi-messenger Addicts (GRANDMA) network and its infrastructure to follow up on transient alerts and detect their early afterglows. In preparation for O4 II campaign, we focused …

it, fr, az, us, Maroc, ge, cn, ua, pl, nl, cz, uz, au, br, Égypte, ae, de, Burkina Faso, lu, be, vi, cl, th, fi, gb, jp (code pays fourni par la source)

Ready for O4 II: GRANDMA Observations of Swift GRBs during eight-weeks of Spring 2022

I. Tosta e Melo, J.-G. Ducoin, Z. Vidadi, Cristina Andrade et autres

We present a campaign designed to train the GRANDMA network and its infrastructure to follow up on transient alerts and detect their early afterglows. In preparation for O4 II campaign, we focused on GRB alerts as they are expected to be an …

fr (code pays fourni par la source)

Multi-band analyses of the bright GRB 230812B and the associated SN2023pel

Thomas Hussenot-Desenonges, Thibeau Wouters, Nidhal Guessoum, I Abdi et autres

GRB~230812B is a bright and relatively nearby ($z =0.36$) long gamma-ray burst (GRB) that has generated significant interest in the community and has thus been observed over the entire electromagnetic spectrum. We report over 80 observations in X-ray, ultraviolet, optical, infrared, and …

fr (code pays fourni par la source)

GRANDMA and HXMT Observations of GRB 221009A: The Standard Luminosity Afterglow of a Hyperluminous Gamma-Ray Burst—In Gedenken an David Alexander Kann

Д. А. Канн, S. Agayeva, V. Aivazyan, S. Alishov et autres

Abstract Object GRB 221009A is the brightest gamma-ray burst (GRB) detected in more than 50 yr of study. In this paper, we present observations in the X-ray and optical domains obtained by the GRANDMA Collaboration and the Insight Collaboration. We study the …

de, az, ge, us, fr, ua, Maroc, be, it, uz, cn, au, Égypte, br, gb, cz, Burkina Faso, lu, vi, th, nl, ru, ae (code pays fourni par la source)

GRANDMA and HXMT Observations of GRB 221009A -- the Standard-Luminosity Afterglow of a Hyper-Luminous Gamma-Ray Burst

D. A. Kann, Sh. Agayeva, V. Aivazyan, S. Alishov et autres

GRB 221009A is the brightest Gamma-Ray Burst (GRB) detected in more than 50 years of study. In this paper, we present observations in the X-ray and optical domains after the GRB obtained by the GRANDMA Collaboration (which includes observations from more than …

de, az, fr, ua, Maroc, ge, uz, us, cn, nl, Égypte, gb, cz, sk, lu, it, ca, vi, th (code pays fourni par la source)