A5040861534- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Computational Physics and Python Applications
- Astronomical Observations and Instrumentation
- Cosmology and Gravitation Theories
- Pulsars and Gravitational Waves Research
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- SAS software applications and methods
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Solar and Space Plasma Dynamics
- Astronomy and Astrophysical Research
- Statistical and numerical algorithms
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Stellar, planetary, and galactic studies
Harvard University
2016-2025
Harvard University Press
2010-2025
Northern Illinois University
2020-2024
Japan Aerospace Exploration Agency
2005-2024
Institute for High Energy Physics
2023-2024
Institute of Space and Astronautical Science
2007-2024
Institute of Science and Technology
2023-2024
Atlas Scientific (United States)
2024
A. Alikhanyan National Laboratory
2024
SR Research (Canada)
2024
The Large Underground Xenon (LUX) experiment is a dual-phase xenon time-projection chamber operating at the Sanford Research Facility (Lead, South Dakota). LUX cryostat was filled for first time in underground laboratory February 2013. We report results of WIMP search data set, taken during period from April to August 2013, presenting analysis 85.3 live days with fiducial volume 118 kg. A profile-likelihood technique shows our be consistent background-only hypothesis, allowing 90% confidence...
High-sensitivity wide-band X-ray spectroscopy is the key feature of Suzaku observatory, launched on 2005 July 10. This paper summarizes spacecraft, in-orbit performance, operations, and data processing that are related to observations. The scientific instruments, high-throughput telescopes, CCD cameras, non-imaging hard detector also described.
The MAXI (Monitor of All-sky X-ray Image) mission is the first astronomical payload to be installed on Japanese Experiment Module-Exposed Facility (JEM-EF) ISS. It scheduled for launch in middle 2009 monitor all-sky objects every ISS orbit. will more powerful than any previous All Sky Monitor (ASM) payloads, being able hundreds AGN. provide all sky images sources about 20 mCrab energy band 2-30 keV from observation one orbit (90 min), 4.5 day, and 1 month. A final detectability could 0.2 2...
A search for the relic neutrinos from all past core-collapse supernovae was conducted using 1496 days of data Super-Kamiokande detector. This analysis looked electron-type antineutrinos that had produced a positron with an energy greater than 18 MeV. In absence signal, 90% C.L. upper limits on total flux were set several theoretical models; these ranged 20 to 130 macro nu(e) cm(-2) s(-1). Additionally, bound 1.2 s(-1) supernova neutrino in region E(nu)>19.3
Abstract The Gas Slit Camera (GSC) is an X-ray instrument on the MAXI (Monitor of All-sky Image) mission aboard International Space Station. It designed to scan entire sky every 92-minute orbital period in 2–30 keV band and achieve highest sensitivity among all-sky monitors ever flown so far. GSC employs large-area position-sensitive proportional counters with a total detector area 5350 cm $^2$. on-board data processor has functions format telemetry as well control high voltage protect them...
We report the discovery and detailed monitoring of X-ray emission associated with Type IIb SN 2011dh using data from Swift Chandra satellites, placing it among best-studied supernovae (SNe) to date. further present millimeter radio obtained Submillimeter Array, Combined Array for Research in Millimeter-wave Astronomy, Expanded Very Large during first three weeks after explosion. Combining these observations early optical photometry, we show that panchromatic set is well described by...
We present a measurement of the total branching fraction flavor-changing neutral-current process B->Xsl+l-, along with partial fractions in bins dilepton and hadronic system (Xs) mass, using sample 471x10^6 Upsilon(4S)->BBbar events recorded BaBar detector at PEP-II e+e- collider. B mesons are reconstructed by combining pair, either or mu+mu-, 10 different Xs final states containing exactly one charged neutral kaon, two fewer pions, most pi0. Using sum over these exclusive modes as basis for...
The birth properties of neutron stars yield important information on the still debated physical processes that trigger explosion and intrinsic neutron-star physics. These include high space velocities young with average values several 100 km/s, whose underlying "kick" mechanism is not finally clarified. There are two competing possibilities could accelerate NSs during their birth: anisotropic ejection either stellar debris or neutrinos. We here present new evidence from X-ray measurements...
We report the in-orbit performance of Gas Slit Camera (GSC) on MAXI (Monitor All-sky X-ray Image) mission carried International Space Station (ISS). Its commissioning operation started August 8, 2009, confirmed basic performances effective area in energy band 2--30 keV, spatial resolution slit-and-slat collimator and detector with 1.5 degree FWHM, source visibility 40-150 seconds for each scan cycle, sky coverage 85% per 92-minute orbital period 95% day. The gas gains read-out amplifier have...
We present a measurement of the b-quark inclusive fragmentation function in ${Z}^{0}$ decays using novel kinematic B-hadron energy reconstruction technique. The was performed 350 000 hadronic events recorded SLD experiment at SLAC between 1997 and 1998. small stable SLC beam spot charge-coupled-device--based vertex detector were used to reconstruct B-decay vertices with high efficiency purity, provide precise measurements quantities this measured B good resolution over full range. compared...
We study the processes $e^+ e^-\to K_S^0 K_L^0 \gamma$, $K_S^0 \pi^+\pi^-\gamma$, and K^+K^-\gamma$, where photon is radiated from initial state, providing cross section measurements for hadronic states over a continuum of center-of-mass energies. The results are based on 469 fb$^{-1}$ data collected with BaBar detector at SLAC. observe $\phi(1020)$ resonance in K_L^0$ final state measure product its electronic width branching fraction about 3% uncertainty. present measurement $ energy range...
We present new evidence that the bright non-thermal X-ray emission features in interior of Cassiopeia A supernova remnant (SNR) are caused by inward moving shocks based on Chandra and NuSTAR observations. Several inward-moving filaments were identified using monitoring data taken 2000-2014. These shock locations nearly coincident with hard (15-40 keV) hot spots seen NuSTAR. From proper motion measurements, transverse velocities estimated to be range $\sim$2,100-3,800 km s$^{-1}$ for a...
Abstract Various transient phenomena on a timescale ranging from seconds to days appear at unexpected sky positions in X-rays. MAXI, Monitor of All-sky X-ray Image, the International Space Station has been monitoring about 95% day and detected objects since 2009 August. Here, we describe quasi-real-time data processing systems MAXI subsequent nova-alert system find objects, present capabilities for detect events with excess fluxes ≳80 mCrab single scan transit ≳8 4 d, send prompt alert...
Abstract Twenty-three giant flares from thirteen active stars (eight RS CVn systems, one Algol system, three dMe stars, and young stellar object) were detected during the first two years of our all-sky X-ray monitoring with gas propotional counters (GSC) Monitor All-sky Image (MAXI). The observed parameters all these MAXI/GSC are found to be at upper ends for luminosity 1031–34 erg s−1 in 2–20 keV band, emission measure 1054–57 cm−3, e-folding time 1 hr 1.5 d, total radiative energy released...
We present a measurement of the left-right cross-section asymmetry ( A(LR)) for Z boson production by e(+)e(-) collisions. The includes final data taken with SLD detector at SLAC Linear Collider during period 1996-1998. Using sample 383 487 decays collected 1996-1998 runs we measure pole value asymmetry, A(0)(LR), to be 0.150 56+/-0.002 39 which is equivalent an effective weak mixing angle sin (2)straight theta(eff)(W) = 0.231 07+/-0.000 30. Our result complete 1992-1998 set comprising...
We present improved measurements of the differential production rates stable charged particles in hadronic Z0 decays, and pions, kaons protons identified over a wide momentum range using SLD Cherenkov Ring Imaging Detector. In addition to flavor-inclusive are made for decays into light (u, d, s), c b primary flavors, selected upgraded Vertex Large differences between flavors observed that qualitatively consistent with expectations based upon previously measured decay properties heavy...
Optical wide-field surveys with a high cadence are expected to create new field of astronomy, so-called "movie astronomy," in the near future. The amount data from observations will be huge, and hence efficient compression indispensable. Here we propose low-rank matrix approximation sparse decomposition as promising solution reduce size effectively while preserving sufficient scientific information. We apply one methods movie obtained prototype model Tomo-e Gozen mounted on 1.0 m Schmidt...
We report on a search for eleven lepton-number violating processes B+→X−ℓ+ℓ'+ with X−=K−, π−, ρ−, K*−, or D− and ℓ+/ℓ'+=e+ μ+, using sample of 471±3 million B¯B events collected the BABAR detector at PEP-II e+e− collider SLAC National Accelerator Laboratory. find no evidence any these modes place 90% confidence level upper limits their branching fractions in range (1.5–26)×10−7.Received 5 November 2013DOI:https://doi.org/10.1103/PhysRevD.89.011102© 2014 American Physical Society
We study the processes γγ→K+K−η and γγ→K+K−π0 using a data sample of 519 fb−1 recorded with BABAR detector operating at SLAC PEP-II asymmetric-energy e+e− collider center-of-mass energies near Υ(nS) (n=2,3,4) resonances. observe ηc→K+K−π0 ηc→K+K−η decays, measure their relative branching fraction, perform Dalitz plot analysis for each decay. K∗0(1430)→Kη decay its fraction to Kπ mode be R(K∗0(1430))=B(K∗0(1430)→Kη)B(K∗0(1430)→Kπ)=0.092±0.025+0.010−0.025. The results correspond first...
The Tomo-e Gozen is a wide-field high-speed camera for the Kiso 1.0-m Schmidt telescope, with field-of-view of 20.7-deg<sup>2</sup> covered by 84 chips 2k x 1k CMOS image sensors 19-μm pixels. It capable to take consecutive images at 2-fps in full-frame read an absolute time accuracy 0.2 millisecond. are operated without mechanical coolers owing low dark current room temperature. A noise 2-e<sup>-</sup> achieves higher sensitivity than that CCD sensor short exposures. Big data 30-TBytes per...