F. J. Lu
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View article: Constraints on Emission Models by Broadband Observations of Soft Gamma-Ray Pulsar PSR B1509–58
Constraints on Emission Models by Broadband Observations of Soft Gamma-Ray Pulsar PSR B1509–58 Open
Soft γ -ray pulsars featuring broad single peaks exhibit different observational properties compared to ordinary double-peaked high-energy pulsars. These two types of pulsars are considered to be the result of different viewing angles. The…
View article: Eleflai: Towards primary care-centered AI-driven mobile otoscope
Eleflai: Towards primary care-centered AI-driven mobile otoscope Open
Ear diseases are among the leading causes of medical consultation, antibiotic misuse, and hearing loss, affecting over one billion people worldwide. Early and accurate diagnosis is critical to alleviating this burden, yet remains challengi…
View article: A CNN-GS Hybrid Algorithm for Generating Pump Light Fields in Atomic Magnetometers
A CNN-GS Hybrid Algorithm for Generating Pump Light Fields in Atomic Magnetometers Open
Atomic magnetometers (AMs), recognized for their ultra-high magnetic sensitivity, demand highly uniform pump light fields to maximize measurement accuracy. In this paper, a phase modulation-based method using convolutional neural networks …
View article: Einstein Probe discovery of the short-period intermediate polar EP J115415.8−501810
Einstein Probe discovery of the short-period intermediate polar EP J115415.8−501810 Open
The X-ray transient source EP240309a/EP J115415.8−501810 was first detected by the Wide-field X-ray Telescope on board the Einstein Probe (EP) instrument during the commissioning phase. Subsequent optical observations confirmed it as a cat…
View article: Imaging-spectroscopy diagnosis of the giant sloshing spiral in the Virgo cluster with the Einstein Probe Follow-up X-ray Telescope
Imaging-spectroscopy diagnosis of the giant sloshing spiral in the Virgo cluster with the Einstein Probe Follow-up X-ray Telescope Open
We performed deep X-ray observations of the Virgo cluster using the Einstein Probe Follow-up X-ray Telescope ( EP-FXT ) with a total exposure of 295 ks. Taking advantage of the large field of view (FoV) and low particle background of EP-FX…
View article: Intimate Heterostructured Electrocatalyst for Functional Tandem Catalysts of Lithium Polysulfides in Separator‐Modified Lithium‐Sulfur Batteries
Intimate Heterostructured Electrocatalyst for Functional Tandem Catalysts of Lithium Polysulfides in Separator‐Modified Lithium‐Sulfur Batteries Open
Developing electrocatalysts to inhibit polysulfide shuttling and expedite sulfur species conversion is vital for the evolution of Lithium‐sulfur (Li‐S) batteries. This work provides a facile strategy to design an intimate heterostructure o…
View article: The First Insight-HXMT Localization Catalog of Short-duration Gamma-Ray Bursts: The First Six Years
The First Insight-HXMT Localization Catalog of Short-duration Gamma-Ray Bursts: The First Six Years Open
As of 2023 December, the high-energy telescope (HE) of Insight-HXMT has detected 72 short-duration gamma-ray bursts (sGRBs), which may be related to binary compact star mergers. In this work, we locate these sGRBs by adopting an enhanced t…
View article: Efficacy and safety of SYSA1902 versus reference ustekinumab in moderate-to-severe plaque psoriasis: A multicenter, randomized, phase III study
Efficacy and safety of SYSA1902 versus reference ustekinumab in moderate-to-severe plaque psoriasis: A multicenter, randomized, phase III study Open
SYSA1902 is equivalent to ustekinumab for the treatment of moderate-to-severe plaque psoriasis.
View article: PSR J1231–1411 Revisited: Pulse Profile Analysis of X-Ray Observation
PSR J1231–1411 Revisited: Pulse Profile Analysis of X-Ray Observation Open
One of the primary goals of Neutron Star Interior Composition Explorer (NICER)-like X-ray missions is to impose stringent constraints on the neutron star equation of state by precisely measuring their masses and radii. NICER has recently e…
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: Broadband X-ray spectral and timing properties of the accreting millisecond X-ray pulsar IGR J17498−2921 during the 2023 outburst
Broadband X-ray spectral and timing properties of the accreting millisecond X-ray pulsar IGR J17498−2921 during the 2023 outburst Open
We report on the broadband spectral and timing properties of the accreting millisecond X-ray pulsar IGR J17498−2921 during its April 2023 outburst. We used data from NICER (1–10 keV), NuSTAR (3–79 keV), Insight-HXMT (2–150 keV), and INTEGR…
View article: The Wide Field Monitor (WFM) of the China-Europe eXTP (enhanced X-ray Timing and Polarimetry) mission
The Wide Field Monitor (WFM) of the China-Europe eXTP (enhanced X-ray Timing and Polarimetry) mission Open
The eXTP mission is a major project of the Chinese Academy of Sciences (CAS), with a large involvement of Europe. Its scientific payload includes four instruments: SFA, PFA, LAD and WFM. They offer an unprecedented simultaneous wide-band X…
View article: A Localization Method of High Energy Transients for All-sky Gamma-ray Monitor
A Localization Method of High Energy Transients for All-sky Gamma-ray Monitor Open
Fast and reliable localization of high-energy transients is crucial for characterizing the burst properties and guiding the follow-up observations. Localization based on the relative counts of different detectors has been widely used for a…
View article: Abnormal planar Hall effect and disentanglement of incoherent and coherent transport in a Kondo lattice
Abnormal planar Hall effect and disentanglement of incoherent and coherent transport in a Kondo lattice Open
The nature of localized-itinerant transition in Kondo lattice systems remains a mystery despite intensive investigations in past decades. While it is often identified from the coherent peak in magnetic resistivity, recent angle-resolved ph…
View article: The Peculiar Precursor of a Gamma-Ray Burst from a Binary Merger Involving a Magnetar
The Peculiar Precursor of a Gamma-Ray Burst from a Binary Merger Involving a Magnetar Open
The milestone discovery of GW170817-GRB 170817A-AT 2017gfo has shown that gravitational waves (GWs) could be produced during the merger of a neutron star–neutron star/black hole and that in electromagnetic (EM) waves, a gamma-ray burst (GR…
View article: Evidence for a nearly orthogonal rotator in GX 301–2 with phase-resolved cyclotron resonant scattering features
Evidence for a nearly orthogonal rotator in GX 301–2 with phase-resolved cyclotron resonant scattering features Open
Cyclotron resonant scattering features (CRSFs) are the absorption features in the X-ray spectra of strongly magnetized accretion neutron stars (NSs), which are probably the most reliable probe to the surface magnetic fields of NSs. The hig…
View article: Evidence for a nearly orthogonal rotator in GX 301--2 with phase-resolved cyclotron resonant scattering features
Evidence for a nearly orthogonal rotator in GX 301--2 with phase-resolved cyclotron resonant scattering features Open
Cyclotron resonant scattering features (CRSFs) are the absorption features in the X-ray spectra of strongly magnetized accretion neutron stars (NSs), which are probably the most reliable probe to the surface magnetic fields of NSs. The hig…
View article: Pulsed Iron Line Emission from the First Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124
Pulsed Iron Line Emission from the First Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124 Open
We report the phase-resolved spectral results of the first Galactic pulsating ultraluminous X-ray source (PULX) Swift J0243.6+6124, modeling its 2017–2018 outburst peak using data collected by the Hard X-ray Modulation Telescope (Insight-H…
View article: Characterization of the eXTP-LAD collimators
Characterization of the eXTP-LAD collimators Open
The enhanced X-ray Timing and Polarimetry mission (eXTP) is a nextgeneration flagship X-ray astronomy satellite currently in phase-B study. The large Area Detector (LAD) on board eXTP contains 40 modules, each consisting of a set of 4×4 la…
View article: Observation of GRB 221009A Early Afterglow in X-Ray/Gamma-Ray Energy Bands
Observation of GRB 221009A Early Afterglow in X-Ray/Gamma-Ray Energy Bands Open
The early afterglow of a gamma-ray burst (GRB) can provide critical information on the jet and progenitor of the GRB. The extreme brightness of GRB 221009A allows us to probe its early afterglow in unprecedented detail. In this Letter, we …
View article: Pulsed Iron line Emission from the First Galactic Ultraluminous X-ray Pulsar Swift J0243.6+6124
Pulsed Iron line Emission from the First Galactic Ultraluminous X-ray Pulsar Swift J0243.6+6124 Open
We report the phase-resolved spectral results of the first Galactic Pulsating Ultra-Luminous X-ray source (PULX) Swift J0243.6+6124, modeling at its 2017-2018 outburst peak using data collected by the Hard X-ray Modulation Telescope (Insig…
View article: The peculiar precursor of a gamma-ray burst from a binary merger involving a magnetar
The peculiar precursor of a gamma-ray burst from a binary merger involving a magnetar Open
The milestone discovery of GW 170817-GRB 170817A-AT 2017gfo 1 has shown that gravitational wave (GW) could be produced during the merger of neutron star-neutron star/black hole and that in electromagnetic (EM) wave a gamma-ray burst (GRB) …
View article: Design and characterization of a 90 GHz CMB TES bolometer
Design and characterization of a 90 GHz CMB TES bolometer Open
Transition-edge sensor (TES) as a type of low-temperature superconducting detector offers superior sensitivity due to its low thermal noise. In this work, we present a prototype of TES bolometer designed for cosmic microwave background (CM…
View article: Broadband X-Ray Timing and Spectral Characteristics of the Accretion-powered Millisecond X-Ray Pulsar MAXIJ1816-195
Broadband X-Ray Timing and Spectral Characteristics of the Accretion-powered Millisecond X-Ray Pulsar MAXIJ1816-195 Open
We studied the broadband X-ray timing and spectral behaviors of the newly confirmed accreting millisecond X-ray pulsar MAXI J1816−195 during its 2022 outburst. We used data from the Insight-HXMT Medium Energy (ME) and High Energy (HE) tele…
View article: Spin Evolution of the Magnetar SGR J1935+2154
Spin Evolution of the Magnetar SGR J1935+2154 Open
Fast radio bursts (FRBs) are short pulses observed in radio frequencies usually originating from cosmological distances. The discovery of FRB 200428 and its X-ray counterpart from the Galactic magnetar SGR J1935+2154 suggests that at least…
View article: Observation of GRB 221009A early afterglow in X/$γ$-ray energy band
Observation of GRB 221009A early afterglow in X/$γ$-ray energy band Open
The early afterglow of a Gamma-ray burst (GRB) can provide critical information on the jet and progenitor of the GRB. The extreme brightness of GRB 221009A allows us to probe its early afterglow in unprecedented detail. In this letter, we …