161 citations · 921 across the 28 of their papers we have counts for
28 papers
Time-averaging Polarimetric and Spectral Properties of Gamma-Ray Bursts
Liang Li, Soroush Shakeri
The composition and radiation mechanism of gamma-ray bursts (GRBs) within jets continue to be hotly debated. Investigating the joint polarimetric and spectral properties is crucial…
A Cosmological Fireball with Sixteen-Percent Gamma-Ray Radiative Efficiency
Liang Li, Yu Wang, Felix Ryde +9
Gamma-ray bursts (GRBs) are the most powerful explosions in the universe. How efficiently the jet converts its energy to radiation is a long-standing problem and it is poorly const…
Revisiting the Spectral-Energy Correlations of GRBs with {\it Fermi} Data I: Model-wise Properties
Liang Li
Gamma-ray bursts (GRBs) exhibit a diversity of spectra. Several spectral models (e.g., Band, cutoff power-law, and blackbody) and their hybrid versions (e.g., Band+blackbody) have…
The structure of the ultrarelativistic prompt emission phase and the properties of the black hole in GRB 180720B
F. Rastegarnia, R. Moradi, J. A. Rueda +5
In analogy with GRB 190114C, we here analyze the ultrarelativistic prompt emission (UPE) of GRB 180720B observed in the rest-frame time interval --~s by Fer…
Relativistic Effects and GRB Polarization in Power-Law Evolution
Liang Li, She-Sheng Xue, Zi-Gao Dai
Despite decades of polarization observations and high-significance polarized -ray, X-ray, optical, and radio emissions in gamma-ray bursts (GRBs) have been accumulating in dozen…
On the X-ray, optical and radio afterglows of the BdHN I GRB 180720B generated by the synchrotron emission
J. A. Rueda, Liang Li, R. Moradi +3
Gamma-ray bursts (GRBs) are systems of unprecedented complexity across all the electromagnetic spectrum, including the radio, optical, X-rays, gamma-rays in the megaelectronvolt (M…
The white dwarf binary merger model of GRB 170817A
J. A. Rueda, R. Ruffini, Liang Li +3
Following the GRB 170817A prompt emission lasting a fraction of a second, s of data in the X-rays, optical, and radio wavelengths have been acquired. We here present a model…
Is magnetically dominated outflow required to explain GRBs?
Gregory Vereshchagin, Liang Li, Damien Bégué
The composition of relativistic outflows producing gamma-ray bursts is a long standing open question. One of the main arguments in favor of magnetically dominated outflows is the a…
Nature of the ultrarelativistic prompt emission phase of GRB 190114C
R. Moradi, J. A. Rueda, R. Ruffini +7
We address the physical origin of the ultrarelativistic prompt emission (UPE) phase of GRB 190114C observed in the interval 1.9-3.99 s, by the Fermi-GBM in 10 keV-10 MeV . Thanks t…
Is the Birth of PSR J0538+2817 Accompanied by a Gamma-ray Burst?
Fan Xu, Jin-Jun Geng, Xu Wang +2
Recently, the Five-hundred-meter Aperture Spherical radio Telescope (FAST) measured the three-dimensional velocity of PSR J0538+2817 in its associated supernova remnant S147 and fo…
Multi-Messenger Astrophysics with THESEUS in the 2030s
Riccardo Ciolfi, Giulia Stratta, Marica Branchesi +63
Multi-messenger astrophysics is becoming a major avenue to explore the Universe, with the potential to span a vast range of redshifts. The growing synergies between different probe…
X-ray and GeV afterglows and sub-TeV emission of GRB 180720B
R. Moradi, Liang Li, J. A. Rueda +3
GRB 180720B, observed by {\it Fermi}-GBM, with redshift , isotropic energy erg, and X-ray afterglow observed by the XRT onboard the Neil G…
Prevalence of Extra Power-Law Spectral Components in Short Gamma-Ray Bursts
Qing-Wen Tang, Kai Wang, Liang Li +1
Prompt extra power-law (PL) spectral component is discovered in some bright gamma-ray bursts (GRBs), which usually dominates the spectral energy distribution below tens of keV or a…
Testing High-latitude Curvature Effect of Gamma-Ray Bursts with {\it Fermi} Data: Evidence of Bulk Acceleration in Prompt Emission
Liang Li, Bing Zhang
When a gamma-ray burst (GRB) emitter stops emission abruptly, the observer receives rapidly fading emission from high latitudes with respect to the line of sight, known as the ``cu…
Bayesian Time-Resolved Spectroscopy of Multi-Pulsed GRBs: Variations of Emission Properties amongst Pulses
Liang Li, Felix Ryde, Asaf Pe'er +2
Gamma-ray bursts (GRBs) are highly variable and exhibit strong spectral evolution. In particular, the emission properties vary from pulse to pulse in multipulse bursts. Here we pre…
Self-Similarities and Power-laws in the Time-resolved Spectra of GRB 190114C, GRB 130427A, GRB 160509A, and GRB 160625B
L. Liang, R. Ruffini, J. A. Rueda +3
[Shortened] CONTEXT: [...] AIMS: To identify and verify the BdHNe I properties in the additional sources GRB160509A, GRB160625B and GRB1340427A, and compare and contrast the result…
Thermal Components in Gamma-ray Bursts. II. Constraining the Hybrid Jet Model
Liang Li
In explaining the physical origin of the jet composition of gamma-ray bursts (GRBs), a more general picture, i.e. the hybrid jet model (which introduced another magnetization param…
Thermal Components in Gamma-ray Bursts. I. How Do They Affect Non-Thermal Spectral Parameters?
Liang Li
The spectral components of the prompt emission of gamma-ray bursts (GRBs) mainly consist of two possible origins: synchrotron (nonthermal) and photosphere (thermal). The typical sp…
On the -Intensity Correlation in Gamma-Ray Bursts: Subphotospheric Heating with Varying Entropy
Felix Ryde, Hoi-Fung Yu, Hüsne Dereli-Bégué +3
The emission mechanism during the prompt phase in gamma-ray bursts (GRBs) can be investigated through correlations between spectral properties. Here, we revisit the correlation rel…
MultiPulse {\it Fermi} Gamma-Ray Bursts. I. Evidence of the Transition from Fireball to Poynting-flux-dominated Outflow
Liang Li
The composition of a jet is still an unsolved problem in gamma-ray bursts (GRBs). Several previous studies have suggested that the prompt emission spectrum of GRBs is likely to con…
Constraining the Type of Central Engine of GRBs with Swift Data
Liang Li, Xue-Feng Wu, Wei-Hua Lei +3
The central engine of gamma-ray bursts (GRBs) is poorly constrained. There exist two main candidates: a fast-rotating black hole and a rapidly spinning magnetar. Furthermore, the X…
A Correlated Study of Optical and X-ray Afterglows of GRBs
Liang Li, Xue-Feng Wu, Yong-Feng Huang +10
We study an extensive sample of 87 GRBs for which there are well sampled and simultaneous optical and X-ray light-curves. We extract the cleanest possible signal of the afterglow c…
How Bad/Good Are the External Forward Shock Afterglow Models of Gamma-Ray Bursts?
Xiang-Gao Wang, Bing Zhang, En-Wei Liang +8
The external forward shock (EFS) models have been the standard paradigm to interpret the broad-band afterglow data of gamma-ray bursts (GRBs). One prediction of the models is that…
Revisiting the Emission from Relativistic Blast Waves in a Density-Jump Medium
J. J. Geng, X. F. Wu, Liang Li +2
Re-brightening bumps are frequently observed in gamma-ray burst (GRB) afterglows. Many scenarios have been proposed to interpret the origin of these bumps, of which a blast wave en…