Shuo Zhang
A5100450366- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- High-pressure geophysics and materials
- Solar and Space Plasma Dynamics
- Astronomical Observations and Instrumentation
- Astronomy and Astrophysical Research
- Radio Astronomy Observations and Technology
- Galaxies: Formation, Evolution, Phenomena
- Cyclone Separators and Fluid Dynamics
- Ionosphere and magnetosphere dynamics
- Stellar, planetary, and galactic studies
- Particle Accelerators and Free-Electron Lasers
- Aerosol Filtration and Electrostatic Precipitation
- Mechanics and Biomechanics Studies
- Fluid Dynamics and Thin Films
- Neutrino Physics Research
- Superconducting Materials and Applications
- Dark Matter and Cosmic Phenomena
- Fluid Dynamics and Heat Transfer
- Geophysics and Gravity Measurements
- Molecular Junctions and Nanostructures
- Astrophysics and Star Formation Studies
- Calibration and Measurement Techniques
Michigan State University
2023-2025
Southeast University
2024
Zhengzhou University
2020-2024
First Affiliated Hospital of Zhengzhou University
2020-2024
Bard College
2020-2023
Chinese Academy of Sciences
2013-2023
Northeastern University
2017-2023
Institute of High Energy Physics
2018-2023
V.E. Zuev Institute of Atmospheric Optics
2020-2023
Russian Academy of Sciences
2020-2023
Severe fever with thrombocytopenia syndrome bunyavirus is a newly discovered high pathogenicity to human. The transmission model has been largely uncharacterized. Investigation on cluster of severe cases provided evidence person-to-person through blood contact the index patient serum virus load.
We report the discovery of 3.76 s pulsations from a new burst source near Sgr A* observed by NuSTAR observatory. The strong signal SGR J1745−29 presents complex pulse profile modulated with pulsed fraction 27% ± 3% in 3–10 keV band. Two observations spaced nine days apart yield spin-down rate =(6.5 1.4) × 10−12. This implies magnetic field B = 1.6 1014 G, power =5 1033 erg s−1, and characteristic age P/2 =9 103 yr for rotating dipole model. However, current may be erratic, especially during...
There is a high demand for potent, selective, and brain-penetrant small molecule inhibitors of leucine-rich repeat kinase 2 (LRRK2) to test whether inhibition LRRK2 activity potentially viable treatment option Parkinson's disease patients. Herein we disclose the use property structure-based drug design optimization highly ligand efficient aminopyrimidine lead compounds. High throughput in vivo rodent cassette pharmacokinetic studies enabled rapid validation vitro-in correlations. Guided by...
We present the first fully simultaneous fits to NIR and X-ray spectral slope (and its evolution) during a very bright flare from Sgr A*, supermassive black hole at Milky Way's center. Our study arises ambitious multi-wavelength monitoring campaigns with XMM-Newton, NuSTAR SINFONI. The average spectrum is well reproduced by broken power-law $\Gamma_{NIR}=1.7\pm0.1$ $\Gamma_X=2.27\pm0.12$. difference in slopes ($\Delta\Gamma=0.57\pm0.09$) strongly supports synchrotron emission cooling break....
We present the X-ray timing results of new black hole candidate (BHC) MAXI J1535-571 during its 2017 outburst from Hard Modulation Telescope (\emph{Insight}-HXMT) observations taken September 6 to 23. Following definitions given by \citet{Belloni2010}, we find that source exhibits state transitions Low/Hard (LHS) Intermediate (HIMS) and eventually Soft (SIMS). Quasi-periodic oscillations (QPOs) are found in intermediate states, which suggest different types QPOs. With large effective area...
We report measurements of the gravitationally lensed secondary image -- first in an infinite series so-called "photon rings" around supermassive black hole M87* via simultaneous modeling and imaging 2017 Event Horizon Telescope (EHT) observations. The inferred ring size remains constant across seven days EHT observing campaign is consistent with theoretical expectations, providing clear evidence that such probe spacetime a striking confirmation models underlying set results. residual diffuse...
The dissipation process of GRB prompt emission is still unknown. Study temporal variability may provide a unique way to discriminate the imprint inner engine activity from geometry and propagation related effects. We define minimum timescale (MVT) as shortest duration individual pulses that shape light curve for sample GRBs test correlations with peak luminosity, Lorentz factor, jet opening angle. compare these predictions recent numerical simulations relativistic structured -- possibly...
Abstract We report a new CO observation survey of LHAASO J0341+5258, using the Nobeyama Radio Observatory 45-m telescope. J0341+5258 is one unidentified ultra-high-energy (UHE; E > 100 TeV) gamma-ray sources detected by LHAASO. Our observations were conducted in 2024 February and March, with total time 36 hr, covering source (∼0 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mover> <mml:mrow> <mml:mo>.</mml:mo> </mml:mrow> <mml:mtext>°</mml:mtext>...
Abstract The astronomical origins of the most energetic galactic cosmic rays and gamma are still uncertain. X-ray follow-up candidate “PeVatrons”—systems producing with energies exceeding 1 PeV—can constrain their spatial origin, identify likely counterparts, test particle emission models. Using ∼120 ks XMM-Newton observations, we report discovery a pulsar wind nebula, possible counterpart for LHAASO PeVatron J0343+5254u. This extended source has power-law spectrum spectral index Γ X =...
We present a study of the X-ray flaring activity Sgr A⋆ during all 150 XMM–Newton and Chandra observations pointed at Milky Way centre over last 15 years. This includes latest campaigns devoted to monitoring closest approach very red Brγ emitting object called G2. The entire data set analysed extends from 1999 September through 2014 November. employed Bayesian block analysis investigate any possible variations in characteristics (frequency, energetics, peak intensity, duration) events that...
We report the time-resolved spectral analysis of a bright near-infrared and moderate X-ray flare Sgr A*. obtained light curves in $M$-, $K$-, $H$-bands mid- $2-8~\mathrm{keV}$ $2-70~\mathrm{keV}$ bands X-ray. The observed slope band is $\nu L_\nu\propto \nu^{0.5\pm0.2}$; L_\nu \propto \nu^{-0.7\pm0.5}$. tested synchrotron self-Compton (SSC) scenarios. brightness faintness, together with slopes, pose challenges for all models explored. rule out scenario which emission SSC. A one-zone model...
Abstract GaN is the most promising upgrade to traditional Si-based radiation-hard technologies. However, underlying mechanisms driving its resistance are unclear, especially for strongly ionising radiation. Here, we use swift heavy ions show that a strong recrystallisation effect induced by key mechanism behind observed resistance. We atomistic simulations examine and predict damage evolution. These lowers expected levels significantly has implications when studying high fluences which...
Sagittarius A* harbors the supermassive black hole that lies at dynamical center of our Galaxy. spends most its time in a low luminosity emission state but flares frequently infrared and X-ray, increasing up to few hundred fold brightness for hours time. The physical processes giving rise X-ray are uncertain. Here we report detection with NuSTAR observatory Summer Fall 2012 four medium amplitude energies 79 keV. For first time, clearly see power-law spectrum extends high energy, no evidence...
Abstract We report on a detailed spectral analysis of the transient X-ray pulsar 1A 0535+262, which underwent brightest giant outburst ever recorded for this source from 2020 November to December with peak luminosity 1.2 × 10 38 erg s −1 . Thanks unprecedented energy coverage and high-cadence observations provided by Insight-HXMT, we were able find first time evidence transition accretion regime. At high luminosity, above critical 6.7 37 , cyclotron absorption line anticorrelates luminosity....
We present the first sub-arcminute images of Galactic Center above 10 keV, obtained with NuSTAR. NuSTAR resolves hard X-ray source IGR J17456–2901 into non-thermal filaments, molecular clouds, point sources, and a previously unknown central component emission (CHXE). detects four extending detection their power-law spectra Γ ∼ 1.3–2.3 up to ∼50 keV. A morphological spectral study filaments suggests that origin may be heterogeneous, where previous studies suggested common in young pulsar wind...
X-ray flares have routinely been observed from the supermassive black hole, Sagittarius A$^\star$ (Sgr A$^\star$), at our Galactic center. The nature of these remains largely unclear, despite many theoretical models. In this paper, we study statistical properties Sgr flares, by fitting count rate (CR) distribution and structure function (SF) light curve with a Markov Chain Monte Carlo (MCMC) method. With 3 million second \textit{Chandra} observations accumulated in Visionary Project,...
In 2013, NuSTAR observed the Sgr B2 region and for first time resolved its hard X-ray emission on subarcminute scales. Two prominent features are detected above 10 keV: a newly emerging cloud, G0.66−0.13, central 90'' radius containing two compact cores, B2(M) B2(N), surrounded by diffuse emission. It is inconclusive whether remaining level of still decreasing or has reached constant background level. A can be best explained reflection nebula scenario, where cloud reprocesses past giant...
We present the first survey results of hard X-ray point sources in Galactic Center (GC) region by NuSTAR. have discovered 70 (3-79 keV) a 0.6 deg^2 around Sgr A* with total exposure 1.7 Ms, and 7 B2 field 300 ks. identify clear Chandra counterparts for 58 NuSTAR assign candidate remaining 19. The reaches luminosities ~4 x ~8 10^32 erg s^-1 at GC (8 kpc) 3-10 10-40 keV bands, respectively. source list includes three persistent luminous binaries likely run-away pulsar called Cannonball. New...
Corona cooling was detected previously from stacking a series of short type-I bursts occurred during the low/had state atoll outburst. Type-I are hence regarded as sharp probe to our better understanding on basic property corona. The launch first Chinese X-ray satellite Insight-HXMT has large detection area at hard X-rays which provide almost unique chance move further in this research field. We report corona by single burst showing up {\bf flare} 4U 1636-536. This duration $\sim$13 seconds...
Abstract The time-variable emission from the accretion flow of Sgr A*, supermassive black hole at Galactic center, has long been examined in radio-to-millimeter, near-infrared (NIR), and X-ray regimes electromagnetic spectrum. However, until now, sensitivity angular resolution have insufficient crucial mid-infrared (MIR) regime. MIRI instrument on JWST changed that, we report first MIR detection A*. was during a flare that lasted about 40 minutes, duration similar to NIR flares, source's...
We append an additional fifteen years (2009-2024) to the Chandra X-ray light curve of M31*, supermassive black hole at center M31, Andromeda galaxy. Extending and expanding on work in Li et al. 2011, we show that M31* has remained elevated state from 2006 through least 2016 (when regular monitoring ceased) likely 2024, with most recent observations still showing flux. identify one moderate flare 2013 where other nuclear sources are low-flux states, making a valuable target for followup...