Zong-Kai Peng
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View article: Extragalactic fast X-ray transient from a weak relativistic jet associated with a Type Ic-BL supernova
Extragalactic fast X-ray transient from a weak relativistic jet associated with a Type Ic-BL supernova Open
Massive stars end their life as core-collapse supernovae, amongst which some extremes are Type Ic broad-lined supernovae associated with long-duration gamma-ray bursts (LGRBs) having powerful relativistic jets. Their less-extreme brethren …
View article: A lanthanide-rich kilonova in the aftermath of a long gamma-ray burst
A lanthanide-rich kilonova in the aftermath of a long gamma-ray burst Open
Kilonovae are a rare class of astrophysical transients powered by the radioactive decay of nuclei heavier than iron, synthesized in the merger of two compact objects 1–4 . Over the first few days, the kilonova evolution is dominated by a l…
View article: A lanthanide-rich kilonova in the aftermath of a long gamma-ray burst
A lanthanide-rich kilonova in the aftermath of a long gamma-ray burst Open
Kilonovae are a rare class of astrophysical transients powered by the radioactive decay of nuclei heavier than iron, synthesized in the merger of two compact objects. Over the first few days, the kilonova evolution is dominated by a large …
View article: GRB 221009A: An Ordinary Nearby GRB with Extraordinary Observational Properties
GRB 221009A: An Ordinary Nearby GRB with Extraordinary Observational Properties Open
The gamma-ray burst GRB 221009A, known as the “brightest of all time,” is the closest energetic burst detected so far, with an energy of E γ ,iso ∼ 10 55 erg. This study aims to assess its compatibility with known GRB energy and luminosity…
View article: GRB 221009A: An ordinary nearby GRB with extraordinary observational properties
GRB 221009A: An ordinary nearby GRB with extraordinary observational properties Open
The gamma-ray burst GRB 221009A, known as the ``brightest-of-all-time" (BOAT), is the closest energetic burst detected so far, with an energy of $E_{γ,\rm iso} \sim 10^{55}$ ergs. This study aims to assess its compatibility with known GRB …
View article: GRBs from Collapse of Thorne-Żytkow-like Objects as the Aftermath of WD-NS Coalescence
GRBs from Collapse of Thorne-Żytkow-like Objects as the Aftermath of WD-NS Coalescence Open
The Type II gamma-ray burst (GRB) 200826A challenges collapsar models by questioning how they can generate a genuinely short-duration event. The other Type I GRB 211211A confused us with a kilonova signature observed in the afterglow of a …
View article: A Genuinely Short Gamma-Ray Burst from Massive Star Core Collapse
A Genuinely Short Gamma-Ray Burst from Massive Star Core Collapse Open
Gamma-ray bursts have been phenomenologically classified into long and short populations based on whether the observed duration is longer or shorter than two seconds. Multi-wavelength and multi-messenger observations in recent years have r…
View article: Stringent Search for Precursor Emission in Short GRBs from Fermi/GBM Data and Physical Implications
Stringent Search for Precursor Emission in Short GRBs from Fermi/GBM Data and Physical Implications Open
We perform a stringent search for precursor emission of short gamma-ray bursts (SGRBs) from the Fermi/GBM data and find 16 precursor events with ≳4.5 σ significance. We find that the durations of the main SGRB emission ( ) and the precurso…