Hou-Jun Lü
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View article: Probing the Nature of High-Redshift Long GRB 250114A and Its Magnetar Central Engine
Probing the Nature of High-Redshift Long GRB 250114A and Its Magnetar Central Engine Open
GRB 250114A is a long-duration gamma-ray burst (GRB) which triggered the Swift/BAT with a spectroscopic high-redshift at $z = 4.732$. The light curve of the prompt emission is composed of three distinct emission episodes, which are separat…
View article: Constraint on the Physical Origin of Gamma-Ray Burst Prompt Emission via Its Nondetected Diffuse Neutrino Emission
Constraint on the Physical Origin of Gamma-Ray Burst Prompt Emission via Its Nondetected Diffuse Neutrino Emission Open
The physical origin of prompt emission in gamma-ray bursts (GRBs) remains an open question since it has been studied for more than half a century. Three alternative models (i.e., dissipative photosphere, internal shock, and Internal-Collis…
View article: The colour evolution of magnetar-powered kilonova emission in merging neutron star–neutron star systems
The colour evolution of magnetar-powered kilonova emission in merging neutron star–neutron star systems Open
The first direct detection of the gravitational wave (GW) event GW170817 and its electromagnetic (EM) counterpart open a new window for studying of multimessenger astronomy. However, how to identify the remnant of binary neutron star (NS) …
View article: The color evolution of magnetar-powered kilonova emission in merging neutron star-neutron star systems
The color evolution of magnetar-powered kilonova emission in merging neutron star-neutron star systems Open
The first direct detection of the gravitational wave (GW) event GW170817 and its electromagnetic (EM) counterpart open a new window for studying of multi-messenger astronomy. However, how to identify the remnant of binary neutron star (NS)…
View article: Neutron Star–White Dwarf Merger as One Possible Optional Source of Kilonova-like Emission: Implications for GRB 211211A
Neutron Star–White Dwarf Merger as One Possible Optional Source of Kilonova-like Emission: Implications for GRB 211211A Open
Long-duration GRB 211211A, which lacked an associated supernova at very a low redshift z = 0.076 but was associated with a possible kilonova emission, has attracted great attention. The neutron star–white dwarf (NS–WD) merger is proposed a…
View article: Neutron Star-White Dwarf Merger as One Possible Optional Source of Kilonova-like Emission: Implications for GRB 211211A
Neutron Star-White Dwarf Merger as One Possible Optional Source of Kilonova-like Emission: Implications for GRB 211211A Open
Long-duration GRB 211211A, which lacked an associated supernova at such a low redshift $z=0.076$, but was associated with a possible kilonova emission, has attracted great attention. The neutron star-white dwarf (NS-WD) merger is proposed …
View article: How to Identify the Object with a Mass Range of (2.2–3) <i>M</i> <sub>⊙</sub> in the Merger of Compact Star Systems
How to Identify the Object with a Mass Range of (2.2–3) <i>M</i> <sub>⊙</sub> in the Merger of Compact Star Systems Open
High-frequency gravitational-wave (GW) radiation has been detected by LIGO-Virgo-KAGRA in the merger of compact stars. However, in two GW events, GW190814 and GW200210, the mass of one companion object falls into the mass region of (2.2–3)…
View article: Signature of Strange Star as the Central Engine of GRB 240529A
Signature of Strange Star as the Central Engine of GRB 240529A Open
GRB 240529A is a long-duration gamma-ray burst (GRB) whose light curve of prompt emission is composed of a triple-episode structure, separated by quiescent gaps of tens to hundreds of seconds. More interestingly, its X-ray light curve of a…
View article: An Intertwined Short and Long GRB with 4-minute Separation
An Intertwined Short and Long GRB with 4-minute Separation Open
Gamma-ray bursts (GRBs), among the most energetic events in the universe, are traditionally classified into long-duration GRBs, lasting over two seconds, and short-duration GRBs, lasting less than two seconds1 . Long GRBs are ty…
View article: Constraining the Nuclear Equation of State of a Neutron Star via High-frequency Quasi-periodic Oscillation in Short Gamma-Ray Bursts
Constraining the Nuclear Equation of State of a Neutron Star via High-frequency Quasi-periodic Oscillation in Short Gamma-Ray Bursts Open
The determination of the equation of state (EOS) of a neutron star (NS) and its maximum mass is very important for understanding the formation and properties of NSs under extreme conditions, but they remain open questions. Short-duration g…
View article: Discovery of high-frequency quasi-periodic oscillation in short-duration gamma-ray bursts
Discovery of high-frequency quasi-periodic oscillation in short-duration gamma-ray bursts Open
Rapidly rotating newborn magnetars, which originate from binary neutron star (NS) mergers and serve as the central engines of short gamma-ray bursts (GRBs), may leave some imprints on their prompt gamma-ray light curves even though they ar…
View article: Discovery of high-frequency quasi-periodic oscillation in short-duration gamma-ray bursts
Discovery of high-frequency quasi-periodic oscillation in short-duration gamma-ray bursts Open
Rapidly rotating newborn magnetars, which originate from binary neutron star (NS) mergers and serve as the central engines of short gamma-ray bursts (GRBs), may leave some imprints on their prompt gamma-ray light curves even though they ar…
View article: Constraining the Nuclear Equation of State of neutron star via high-frequency quasi-periodic oscillation in short gamma-ray bursts
Constraining the Nuclear Equation of State of neutron star via high-frequency quasi-periodic oscillation in short gamma-ray bursts Open
The determination of the equation of state (EOS) of a neutron star (NS) and its maximum mass is very important for understanding the formation and properties of NSs under extreme conditions, but they remain open questions. Short-duration g…
View article: Neutrino Constraints and Detection Prospects from Gamma-Ray Bursts with Different Jet Compositions
Neutrino Constraints and Detection Prospects from Gamma-Ray Bursts with Different Jet Compositions Open
The prompt emission mechanism of gamma-ray bursts (GRBs) is a long-standing open question, and GRBs have been considered as potential sources of high-energy neutrinos. Despite many years of search for the neutrino events associated with GR…
View article: The X-ray re-brightening of GRB afterglow revisited: a possible signature from activity of the central engine
The X-ray re-brightening of GRB afterglow revisited: a possible signature from activity of the central engine Open
Long-duration gamma-ray bursts (GRBs) are thought to be from core collapse of massive stars, and a rapidly spinning magnetar or black hole may be formed as the central engine. The extended emission in the prompt emission, flares, and plate…
View article: The X-ray re-brightening of GRB afterglow revisited: a possible signature from activity of the central engine
The X-ray re-brightening of GRB afterglow revisited: a possible signature from activity of the central engine Open
Long-duration gamma-ray bursts (GRBs) are thought to be from core collapse of massive stars, and a rapidly spinning magnetar or black hole may be formed as the central engine. The extended emission in the prompt emission, flares and platea…
View article: The Thermal Emission in Short Gamma-Ray Bursts with Extended Emission Observed by Fermi/GBM
The Thermal Emission in Short Gamma-Ray Bursts with Extended Emission Observed by Fermi/GBM Open
Short gamma-ray bursts (SGRBs) with extended emission (EE) are composed of initial main emission (ME) with a short hard spike, followed by a long-lasting EE. Whether the ME and EE originated from the same origin or not, as well as the jet …
View article: Neutrino constraints and detection prospects from gamma-ray bursts with different jet compositions
Neutrino constraints and detection prospects from gamma-ray bursts with different jet compositions Open
The prompt emission mechanism of gamma-ray bursts (GRBs) is a long-standing open question, and GRBs have been considered as potential sources of high-energy neutrinos. Despite many years of search for the neutrino events associated with GR…
View article: The thermal emission in short GRBs with extended emission observed by Fermi/GBM
The thermal emission in short GRBs with extended emission observed by Fermi/GBM Open
Short gamma-ray bursts (SGRBs) with extended emission (EE) are composed of initial main emission (ME) with a short-hard spike, followed by a long-lasting EE. Whether the ME and EE originated from the same origin or not, as well as the jet …
View article: The Progenitor and Central Engine of Short-duration GRB 201006A Associated with a Coherent Radio Flash
The Progenitor and Central Engine of Short-duration GRB 201006A Associated with a Coherent Radio Flash Open
Recently, the detection of a coherent radio flash associated with short-duration GRB 201006A, occurring 76.6 minutes after the burst, has attracted great attention. However, the physical origin of the coherent radio flash remains under deb…
View article: GRB 221009A/SN 2022xiw: A Supernova Obscured by a Gamma-Ray Burst Afterglow?
GRB 221009A/SN 2022xiw: A Supernova Obscured by a Gamma-Ray Burst Afterglow? Open
We present optical photometry for the afterglow of GRB 221009A, in some respects the most extraordinary gamma-ray burst (GRB) ever observed. Good quality in the R -band light curve is obtained, covering 0.32–19.57 days since the Fermi-Gamm…
View article: GRB 221009A/SN 2022xiw: A Supernova Obscured by a Gamma-Ray Burst Afterglow?
GRB 221009A/SN 2022xiw: A Supernova Obscured by a Gamma-Ray Burst Afterglow? Open
We present optical photometry for the afterglow of GRB 221009A, in some respects the most extraordinary gamma-ray burst (GRB) ever observed. Good quality in the R-band light curve is obtained, covering 0.32-19.57 days since the Fermi-GBM t…
View article: GRB 210323A: Signature of Long-lasting Lifetime of Supra-massive Magnetar as the Central Engine from the Merger of Binary Neutron Star
GRB 210323A: Signature of Long-lasting Lifetime of Supra-massive Magnetar as the Central Engine from the Merger of Binary Neutron Star Open
Theoretically, a supra-massive neutron star or magnetar may be formed after the merger of binary neutron stars. GRB 210323A is a short-duration gamma-ray burst (GRB) with a duration of lasting ∼1 s. The light curve of the prompt emission o…
View article: Spin, inclination, and magnetic field evolution of magnetar population in vacuum and plasma-filled magnetospheres
Spin, inclination, and magnetic field evolution of magnetar population in vacuum and plasma-filled magnetospheres Open
Magnetars are potential energy sources or central engines for numerous transient phenomena in the Universe. How newborn magnetars evolve in different environments remains an open question. Based on both observed and candidate magnetars, it…
View article: Ejecta–Circumstellar Medium Interaction in High-density Environment Contribution to Kilonova Emission: Application to GRB 191019A
Ejecta–Circumstellar Medium Interaction in High-density Environment Contribution to Kilonova Emission: Application to GRB 191019A Open
The nearby long-duration GRB 191019A recently detected by Swift lacks an associated supernova and belongs to a host galaxy with little star formation activity, suggesting that the origin of this burst is the result of a merger of two compa…
View article: The progenitor and central engine of a peculiar GRB 230307A
The progenitor and central engine of a peculiar GRB 230307A Open
Recently, a lack of supernova-associated long-duration gamma-ray burst (GRB 230307A) at such a low redshift $z=0.065$, but associated with a possible kilonova emission, has attracted great attention. Its heavy element nucleosynthesis and t…
View article: The Progenitor and Central Engine of a Peculiar GRB 230307A
The Progenitor and Central Engine of a Peculiar GRB 230307A Open
Recently, a lack of supernova-associated with long-duration gamma-ray burst (GRB 230307A) at such a low redshift z = 0.065, but associated with a possible kilonova emission, has attracted great attention. Its heavy element nucleosynthesis …
View article: Can Fallback Accretion on the Magnetar Model Power the X-Ray Flares Simultaneously Observed with Gamma Rays of Gamma-Ray Bursts?
Can Fallback Accretion on the Magnetar Model Power the X-Ray Flares Simultaneously Observed with Gamma Rays of Gamma-Ray Bursts? Open
The prompt emission, X-ray plateau, and X-ray flares of gamma-ray bursts (GRBs) are thought to be from internal dissipation, and the magnetar as the central engine with propeller fallback accretion is proposed to interpret the observed phe…
View article: Ejecta-circumstellar medium interaction in high-density environment contribution to kilonova emission: Application to GRB 191019A
Ejecta-circumstellar medium interaction in high-density environment contribution to kilonova emission: Application to GRB 191019A Open
The nearby long-duration GRB 191019A recently detected by Swift lacks an associated supernova and belongs to a host galaxy with little star formation activity, suggesting that the origin of this burst is the result of a merger of two compa…
View article: The Jet Composition of GRB 230307A: Poynting-Flux-Dominated Outflow?
The Jet Composition of GRB 230307A: Poynting-Flux-Dominated Outflow? Open
The jet composition of GRB plays an important role in understanding the energy dissipation and radiation mechanisms in GRB physics, but it is poorly constrained from the observational data. Recently, an interesting long-duration GRB 230307…