Conveners
GRB-SN connection: Tuesday block 1
- Giulia Stratta (Goethe University Frankfurt)
- Achille Fiore (Goethe Universität Frankfurt am Main)
GRB-SN connection: Tuesday block 2
- Giulia Stratta (Goethe University Frankfurt)
- Achille Fiore (Goethe Universität Frankfurt am Main)
Description
Since the first association of a core-collapse supernova with a long gamma-ray burst (SN 1998bw), about 45 very energetic type-Ic broad lined supernovae have been observed in spatial and temporal connection with long GRB, thus demonstrating their common origin in the vast majority of cases and establishing the ‘hypernova’ classification. In the last two decades, also other type of hypernovae (different from type-Ic broad lined supernovae) were discovered in association with long GRBs, but no
consensus has been reached about the universality of their affinity.
This parallel session focuses on the status of the art on both the observational and theoretical findings of very energetic SNe analogous to those associated with GRBs.
Among the topics we aim to address: i) long GRB SNe observational properties; ii) long GRB - SNe - magnetar connection; iii) long and ultra long GRBs - SLSN connection; iv) GRB supernovae as potential r-process sources; iv) GRB-SN studies in a multi-messenger framework.
Although astronomers quickly identified stellar implosion as the dominant progenitor of long-duration gamma-ray bursts, the exact mechanism that produces the high angular momenta in the progenitor that is required to produce gamma-ray bursts. The properties of the supernovae associated with these bursts (currently believed to be primarily/all type Ic supernovae) provide key insight into the...
The binary-driven hypernova (BdHN) model proposes long gamma-ray bursts (GRBs) originate in binaries composed of a carbon-oxygen (CO) star and a neutron star (NS) companion. The CO collapse triggers the GRB. It generates a newborn NS ($\nu$NS) and a supernova (SN) that accretes onto the NS and the $\nu$NS. This accretion process, which is highly super-Eddington, rapidly transfers mass and...
The era of long gamma-ray bursts (LGRBs) and supernovae (SNe) connections started with the discovery of the first direct temporal and spatial connection of GRB 980425 and SN 1998bw. This field has evolved enormously over the last two decades, with more than fifty LGRBs and SNe association events. The association of a SN with a GRB can be seen as a late-time bump in the optical/NIR light curves...
Detection, observation, and description of supernovae associated with gamma-ray bursts are currently topical tasks in the field of transient phenomena. However, there is a certain pool of factors that can complicate or even make it impossible to identify a supernova in the light curve of a gamma-ray burst. And even if a supernova signature has been detected, further steps to determine its...
GRB 210704A is a burst of intermediate duration (T90~1-4 s) followed by a fading afterglow and an optical excess that peaked about 7 days after the explosion. Its properties, and in particular those of the excess, do not easily fit into the well established classification scheme of GRBs as being long or short.
In this talk, I will present multi-wavelength observations of the GRB and its...
In this talk, I will present and discuss the evidence for an off-axis jet in the nearby broad-lined SN 2020bvc. Particular attention will be devoted to the modeling of the multi-wavelength late-time emission detected from this event, and on the signatures of cocoon emission in the very early spectra of this event.
In this talk, we will discuss the origins of Long-duration Gamma-Ray Bursts (LGRBs). Typically associated with Type-Ic Supernovae, LGRBs are linked to massive stars. However, it remains unclear whether the progenitors are in binary systems or are effectively single stars. Our emphasis will be on single-star pathways. Our emphasis will be on single-star pathways. Specifically, we will explore...
