• Mar. 17, 2016, Deng et al. ("Collision-induced magnetic reconnection and a unified interpretation of polarization properties of GRBs and blazars") accepted for publication in ApJL (here).
  • Mar. 10, 2016, Liu et al. ("A method to constrain mass and spin of GRB black hole within the NDAF model") accepted for publication in ApJ (here).
  • Mar. 6, 2016, Chu et al. ("Capturing the electromagnetic counterparts of binary neutron star mergers through low latency gravitational wave triggers") accepted for publication in MNRAS (here).
  • Mar. 4, 2016, Zhang (Bin-Bin), Zhang & Castro-Tirado ("Central engine memory of Gamma-Ray Bursts and Soft Gamma-Ray Repeaters") accepted for publication in ApJL (here).
  • Mar. 2, 2016, Quanta Magazine reports recent Fermi GBM signal following GW 150914 as well as theoretical challenges and possible models - including this model. (see this link, also this link).
  • Feb. 25, 2016, a short paper (in ApJL style) to discuss the implications of afterglow and progenitor of FRB 150418 finished and posted to arXiv. (here).
  • Feb. 23, 2016, a discovery (Keane et al.) of a radio afterglow of a fast radio burst (FRB 150418) published in Nature.
  • Feb. 16, 2016, Yang, Zhang & Dai accepted for publication in ApJL (synchrotron heating by an FRB in a self-absorbed nebula) (here).
  • Feb. 15, 2016, a toy model of interpreting LIGO-GBM associations within the framework of double black hole mergers (with slight charge) posted to arXiv. (here).
  • Feb. 14, 2016, Fermi GBM team announced in arXiv the discovery of a putative short GRB candidate following GW 150914.
  • Feb. 11, 2016, Advanced LIGO team announced the discovery of gravitational waves! Many GW 150914 papers flooded in on arXiv.
  • Feb. 3, 2016, Gao, Zhang & Lü accepted for publication in Physical Review D (using short GRB data to constrain neutron star equation of state and the birth properties of the supra-massive neutron stars) (here).
  • Jan. 21, 2016, Dr. Ang Li (Xiamen University) begins her three-month visit.
  • Jan. 22, 2016, a Fermi proposal submitted.
  • Jan. 20-22, 2016, Dr. Davide Radice (Caltech) visits group, discusses a collaboration, and gives a talk.
  • Jan. 19, 2016, new semester starts, first lecture.
  • Jan. 17, 2016, a complete draft of Chapter 8 (Afterglow physics) of the book "The Physics of Gamma-Ray Bursts" finished.
  • Jun. 2, 2015, long paper led by Xiang-Gao Wang on testing the external forward shock models with broad-band data accepted for publication in ApJS. (here).
  • Jun. 1, 2015, Uhm & Zhang paper on curvature effect accepted for publication in ApJ. (here).
  • Jun. 1-3, 2015, Prof. Xue-Feng Wu visited the group.
  • May 25-27, 2015, Prof. Banibrata Mukhopadhyay visited the group and gave a talk.
  • May 14-Jun. 4, 2015, Dr. Lekshmi Resmi visited the group and gave a talk.
  • May 12-15, 2015, UT Austin student Wenbin Lu visited the group and gave a talk.
  • May 14, 2015, Wei Deng successfully defended his PhD dissertation entitled "Study the mechanism of the prompt emission of Gamma-Ray Bursts".
  • May. 13, 2015, Guiriec et al. (three-spectral-component fit to Fermi GRB data) accepted for publication in ApJ (here).
  • May 4, 2015, traveled to NRAO, Soccorro to have a working lunch with Dale Frail, Sarah Burke-Spolaor, and Bryan Butler to discuss FRB observations.
  • May 3-6, 2015, traveled to Los Alamos to attend a workshop entitled "Plasma Energization: Exchanges between Fluid and Kinetic Scales". Delivered on May 6 on "The composition of GRB jets and the ICMART model".
    Apr. 22, 2015, a new paper led by Hui Sun on event rate densities and luminosity functions of extra-galactic high-energy transients submitted for publication.
  • Apr. 20, 2015, Dr. Z. Lucas Uhm formally joined the group as a postdoctoral research associate.
  • Apr. 11-18, 2015, traveled to China to attend ISSI-Beijing workshop on "GRBs as cosmological tools". Delivered a talk on "GRB populations" on Monday Apr. 13.
  • Apr. 18, 2015, attended a POLAR science meeting on Friday Apr. 17, delivered a talk entitled "GRB prompt emission, ICMART model, and polarization".
  • Apr. 9, 2015, Houjun Lu successfully defended his PhD dissertation entitled "Constraining the progenitor and central engine of gamma-ray bursts with observational data".
  • Mar. 23, 2015, Heard from NASA that a three-year proposal to the Astrophysics Theory Program (ATP) was selected for funding.
  • Mar. 23, 2015, Wei Deng et al. (numerical simulations of collision induced magnetic dissipation in Poynting flux dominated jets) accepted for publication in ApJ (here).
  • Mar. 23, 2015, Hou-Jun Lu et al. paper on short GRB central engine / NS equation-of-state accepted for publication in ApJ. (here).
  • Mar. 1, 2015, a collaboration paper led by Liang Li on a GRB afterglow study accepted for publication in ApJ (here).
  • Feb. 27, 2015, Shri Kulkarni visited UNLV and gave a public talk at the Russell Frank Lecture Series.
  • Feb. 25, 2015, the Niino, Nagamine & Zhang paper on metallicity of GRB hosts accepted for publication in MNRAS (here).
  • Feb. 9, 2015, a collaboration paper led by formal postdoc Massimilliano De Pasquale accepted for publication in MNRAS (here).
  • Jan. 29-30, 2015, Prof. Fulvio Melia and Mr. Jun-Jie Wei visited UNLV and our group. Mr. Wei gave a morning talk on "Constraining cosmological models with different cosmic rulers". Prof. Melia gave an afternoon colloquium on "The zero active mass condition in FRW cosmologies".
  • Jan. 28, 2015, The numerical simulation work led by Wei Deng finally submitted for publication. It verified several hypotheses of the ICMART model, and revealed some new interesting features (including a correlation between initial and final sigma values in an ICMART event. (here)
  • Jan. 15, 2015, UNLV College of Sciences news on APS fellow (here)
  • Jan. 14, 2015, the paper Gao & Zhang, "Photosphere emission from a hybrid relativistic outflow with arbitrary dimensionless entropy and magnetization in GRBs", accepted for publication in ApJ. (here)
  • Jan. 12, 2015, new paper led by Hou-Jun Lu submitted for publication. It uses the Swift data to study the putative magnetar central engine of short GRBs, and constrain NS equation of state. (here)

  • Dec. 9-12, 2014, Dr. Soeb Razzaque visited our group, and delivered a talk on high-energy neutrinos
  • Dec. 4, 2014, received notification, elected as a Fellow of American Physical Society, with citation: "For his significant scientific contributions to the understanding of the physical mechanisms of high-energy astrophysical sources, especially the prompt emission and afterglows of cosmological gamma-ray bursts." See link here.
  • Nov. 25, 2014, a new paper led by Mengxiang Lin (an undergraduate student in Peking University), entitled "Oscillation Driven Magnetospheric Activity In Pulsars" accepted for publication in ApJ (here)
  • Nov. 6-7, 2014, Dr. Wen-fai Fong visited our group and gave a Physics Forum talk.
  • Oct. 22-24, 2014, former group member, Dr. Bin-Bin Zhang from UAU, visited our group and gave a Physics Forum talk.
  • Sep. 11, 2014, a new paper with He Gao submitted to ApJ. We developed a theory of photosphere emission of a hybrid relativistic jet with arbitrary dimensionless entropy and magnetization, and a method to diagnose central engine properties using Fermi data. (here)
  • Sep. 4, 2014, a long review paper with Pawan Kumar accepted for publication in Physics Reports (here)
  • Aug. 29, 2014, a new paper led by Yuu Niino and Ken Nagamine about metallicity of GRB amd SN host galaxies submitted for publication. (here)
  • Jul. 31, 2014, the Yi, Gao & Zhang paper accepted for publication in ApJL. (here)
  • Jul. 27, 2014, a new paper led by Ken-Ichi Nishikawa, entitled "Magnetic Field Generation in Core-Sheath Jets via the Kinetic Kelvin-Helmholtz Instability" accepted for publication in ApJ (here)
  • Jul. 23, 2014, a new paper led by Fen Lyu, entitled "Distributions of Gamma-Ray Bursts and Blazars in the Lp-Ep Plane and Possible Implications for their Radiation Physics" accepted for publication in ApJ (here)
  • Jul. 21-25, 2014, attended INT Program INT-14-2a, "Binary Neutron Star Coalescence as a Fundamental Physics Laboratory" (Week 4 on "Merger astrophysics") (website), Institute for Nuclear Theory (INT), University of Washington
  • Jul. 18, 2014, short visit to SLAC, attending morning coffee.
  • Jul. 14, 2014, visit Caltech, gave a special talk entitled "Fast Radio Bursts: Mysterious Transients and Implications".
  • Jul. 6, 2014, back to Las Vegas.
  • Jul. 1, 2014, a new paper ("Multi-wavelength afterglows of fast radio bursts") led by Shuang-Xi Yi (co-authored by He Gao and me) submitted to ApJL for publication (here). It gave a detailed calculation on faint multi-wavelength afterglows of FRBs, and discuss observational strategies.
  • Jun. 28 - Jul. 3, 2014, visited Guangxi University and gave two lectures on GRBs and FRBs.
  • Jun. 25, 2014, colloquium at National Astronomical Observatory of China (NAOC), title: "Fast Radio Bursts: Mysterious Transients and Implications".
  • Jun. 23-24, 2014, organized/attended a workshop on GRB cosmology at KIAA, gave a talk entitled "GRBs in the cosmological content" (Jun. 23, 2014).
  • Jun. 16, 2014, Yuan & Zhang paper accepted for publication in JHEAp (here).
  • Jun. 15-19, 2014, attended "Gamma-ray bursts in the multi-messenger era" meeting (website), gave an invited talk entitled "Radiation Processes in GRBs" (Jun. 17, 2014).
  • Jun. 9-14, 2014, attended "The Unquiet Universe" meeting (website), gave an invited talk entitled "Gamma-ray bursts prompt emission and afterglow: observations vs. theory" (Jun. 9, 2014).
  • May 28-31, 2014, attended SPCS2014 (Shanghai Particle Physics and Cosmology Symposium) (website), gave an invited talk entitled "High energy neutrinos from gamma-ray bursts" (May 31, 2014).
  • May 24-27, 2014, visited Huazhong University of Science Technology (HUST), gave a colloquium entitled "On the nature of fasr radio bursts".
  • May 23, 2014, a new paper led by You-Dong Hu, entitled "Internal Energy Dissipation of Gamma-Ray Bursts Observed with Swift: Precursors, Prompt Gamma-rays, Extended emission and Late X-ray Flares" accepted for publication in ApJ (here)
  • May 22-23, 2014, visited Purple Mountain Observatory and Nanjing University, gave a colloquium at PMO entitled "Fermi GeV gamma-ray excess in the Galactic center".
  • May 21, 2014, gave two lectures at Summer School of SPCS2014 (Shanghai Particle Physics and Cosmology Symposium) on GRBs.
  • May 6-7, 2014, attended "Exploring the Dynamic Universe Forum. ISSI-Beijing, China, and delivered an invited talk entitled "Electromagnetic counterparts of gravitational wave events" (May 6, 2014).

  • Apr. 30, 2014, a new paper led by Jiu-Zhou Wang and Wei-Hua Lei accepted for publication in ApJ (here). In this paper, we interpret the two-frequency QPOs and radio emission rebrightening within a unified two-component jet model.
  • Apr. 9, 2014, a new paper "Millisecond pulsar interpretation of the Galactic center gamma-ray excess", was submitted for publication in Journal of High Energy Astrophysics (here). In this paper, we suggest that millisecond pulsars are adequate to interpret the gamma-ray excess in the Galactic center without the need of introducing dark matter annihilation.
  • Apr. 1, 2014, the paper led by Bin-Bin Zhang "How long does a burst burst", accepted for publication in ApJ (here). In this paper, we suggest that current data do not allow us to draw the conclusion that the so-called "ultra-long GRBs" form a distinct population with a new type of progenitor.
  • Mar. 28, 2014, He Gao defended his PhD thesis entitled "Physics of Gamma-ray bursts and multi-messenger signals from double neutron star mergers". He will move to Pennsylvania State University to take a postdoc position in August.
  • Mar. 21 (Mar. 22 in China), 2014, attended a discussion meeting on POLAR mission (in IHEP, Beijing) over Skype. Delivered an invited talk entitled "Gamma-ray burst polarization & POLAR connection".
  • Mar. 20, 2014, one day visit to University of Utah. Delivered a colloquium entitled "On the nature of fast radio bursts".
  • Mar. 19, 2014, A paper led by Qiang Yuan, entitled "Fermi Large Area Telescope detection of supernova remnant RCW 86", accepted for publication in ApJL (here).
  • Feb. 26, 2014, Uhm & Zhang, "Fast cooling synchrotron radiation in a decaying magnetic field and gamma-ray burst emission mechanism", accepted for publication in Nature Physics (here). In this paper, we overcome the standard fast-cooling problem of GRB prompt emission, and suggest that the famous phenomenological "Band" function of GRB prompt emission with a mysterious low-energy photon index around -1 could be simply due to synchrotron emission in a varying magnetic field. This model requires a relatively large emission radius, as is expected in the "ICMART model" (here) of GRB prompt emission.
  • Feb. 19, 2014, Deng & Zhang, "Low energy spectral index and Ep evolution of quasi-thermal photosphere emission of gamma-ray bursts", accepted for publication in ApJ (here).
  • Feb. 19, 2014, Lü & Zhang, "A test of the millisecond magnetar central engine model of GRBs with Swift data", accepted for publication in ApJ (here).
  • Feb. 9, 2014, first-author review paper with Peter Meszaros (here) hits 500 citation mark. For a full citation statistics, see here.
  • Jan. 31, 2014, Szary, Zhang, Melikidze, Gil & Xu, "Radio efficiency of pulsars", accepted for publication in ApJ (here).
  • Jan. 28, 2014, Deng & Zhang, "Cosmological implications of Fast Radio Burst / Gamma-Ray Burst Associations" accepted for publication in ApJL (here).
  • Jan. 27, 2014, a new paper on GRB blastwave encountering a bump or void, led by Lucas Uhm, submitted for publication (here).
  • Jan. 27, 2014, a new paper entitled "Magnetic Field Amplification and Saturation in Turbulence Behind a Relativistic Shock", led by Yosuke Mizuno, accepted for publication in MNRAS (here).
  • Jan. 12, 2014, returned to UNLV.
  • Jan. 10, 2014, delivered a lunch talk at KIAA and Department of Astronomy, Peking University, China. Title: "On the nature of fast radio bursts".
  • Jan. 6, 2014, a new paper on a statistical analysis of GRB millisecond magnetar central engine, led by Houjun Lü,, submitted for publication in ApJ (here).
  • Jan. 4, 2014, attended a workshop on "GRBs and related physics frontier" in Nanjing, China. Delivered an invited talk on "On the nature of fast radio bursts".

    News from Aug. to Dec., 2013:

  • Dec. 30, 2013, a new paper on using FRB/GRB association to study cosmology, led by Wei Deng, submitted for publication in ApJL (here).
  • Dec. 28, 2013, a paper on GRB light curves in the ICMART model led by Bo Zhang accepted for publication in ApJ (here).
  • Dec. 11-12, 2013, traveled to KIAA, Beijing for a collaborative visit.
  • Dec. 10, 2013, finished AST 713 (Astrophysics I) teaching.
  • Nov. 26, 2013, the FRB/GRB connection paper accepted for publication in ApJ Letters (here).
  • Nov. 23, 2013, a paper on interpreting afterglow and "kilonova" of GRB 130603B within the framework of a supra-massive magnetar central engine, led by Y.-Z. Fan, accepted for publication in ApJ Letters (here).
  • Nov. 21-22, 2013, visited University of Oklahoma, and delivered a colloquium talk entitled "Physics of gamma-ray bursts and prospects in the multi-messenger era".
  • Nov. 12, 2013, a paper on the origin of smooth cooling break in GRB afterglows, led by Z. Lucas Uhm, accepted for publication in ApJ (here).
  • Nov. 11-15, 2013, attended "Supernova and Gamma-Ray Bursts 2013", Kyoto, Japan. Delivered an invited talk entitled "GRB prompt emission models" (Nov. 11, 2013).
  • Oct. 31, 2013, Mr. Shuang-Xi Yi joined our group as a visiting student (from Nanjing University), supported by Chinese Scholarship Program.
  • Oct. 30, 2013, heard from NASA ADAP program that our proposal entitled "Understanding GRB physics with multi-wavelength data" (13-ADAP13-0134) has been selected for funding (3 years).
  • Oct. 28-29, 2013, attended Swift Science Planning Meeting, State College, Pennsylvania. Delivered a talk entitled "A possible FRB/GRB connection" (Oct. 28, 2013).
  • Oct. 22, 2013, Dr. Xiang-Gao Wang joined our group as a postdoc fellow, supported by Chinese Scholarship Program.
  • Oct. 17, 2013, a new single-author paper "A possible FRB/GRB connection: towards a multi-wavelength campaign to unveil the nature of fast radio bursts" submitted for publication (here).
  • Oct. 9, 2013, 1st first-author paper (here) hits 500 citation mark. For a full citation statistics, see here.
  • Oct. 9, 2013, a new paper "How long does a burst burst?", led by Bin-Bin Zhang at CSPAR, UAH, submitted for publication (here).
  • Oct. 6, 2013, long review for New Astronomy Reviews, led by He Gao, accepted for publication (here). This is a very detailed review of the analytical synchrotron external shock models of GRBs. Many useful formulae are collected.
  • Sep. 26, 2013, 14th first-author paper (here) hits 100 citation mark. For a full citation statistics, see here.
  • Sep. 23-26, 2013, Dr. Hui Li (Los Alamos National Laboratory) visited our group. Collaboration discussions.
  • Sep. 19, 2013, a paper on magnetar-powered "mergernova", led by Yun-Wei Yu, accepted for publication in ApJ Letters (here).
  • Sep. 15-20, 2013, attended "Explosive Transients: Lighthouses of the Universe" in Santorini, Greece (web site). Delivered a talk "Theories of GRB prompt emission: the case of a strongly magnetized outflow" (Sep. 19, 2013).
  • Aug. 6, 2013, back to UNLV after one-year sabbatical leave.