221 citations · 626 across the 15 of their papers we have counts for
15 papers
Orbital solution leading to an acceptable interpretation for the enigmatic gamma-ray binary HESS J0632+057
Yuki Moritani, Takafumi Kawano, Sho Chimasu +4
High-dispersion spectroscopic monitoring of HESS J0632+057 has been carried out over four orbital cycles in order to search for orbital modulation, covering the entire orbital phas…
Calibration and performance studies of the balloon-borne hard X-ray polarimeter PoGO+
M. Chauvin, M. Friis, M. Jackson +7
Polarimetric observations of celestial sources in the hard X-ray band stand to provide new information on emission mechanisms and source geometries. PoGO+ is a Compton scattering p…
Black hole spin of Cyg X-1 determined from the softest state ever observed
Takafumi Kawano, Chris Done, Shin'ya Yamada +3
We show the softest ever spectrum from Cyg~X-1, detected in 2013 with Suzaku. This has the weakest high energy Compton tail ever seen from this object, so should give the cleanest…
Optimising a balloon-borne polarimeter in the hard X-ray domain: from the PoGOLite Pathfinder to PoGO+
Maxime Chauvin, Miranda Jackson, Takafumi Kawano +6
PoGOLite is a balloon-borne hard X-ray polarimeter dedicated to the study of point sources. Compton scattered events are registered using an array of plastic scintillator units to…
Observation of polarised hard X-ray emission from the Crab by the PoGOLite Pathfinder
M. Chauvin, H. -G. Florén, M. Jackson +19
We have measured the linear polarisation of hard X-ray emission from the Crab in a previously unexplored energy interval, 20-120 keV. The introduction of two new observational para…
The first demonstration of the concept of "narrow-FOV Si/CdTe semiconductor Compton camera"
Yuto Ichinohe, Yuusuke Uchida, Shin Watanabe +14
The Soft Gamma-ray Detector (SGD), to be deployed onboard the {\it ASTRO-H} satellite, has been developed to provide the highest sensitivity observations of celestial sources in th…
The design and flight performance of the PoGOLite Pathfinder balloon-borne hard X-ray polarimeter
M. Chauvin, H. -G. Florén, M. Jackson +15
In the 50 years since the advent of X-ray astronomy there have been many scientific advances due to the development of new experimental techniques for detecting and characterising…
Preflight performance studies of the PoGOLite hard X-ray polarimeter
M. Chauvin, M. Jackson, T. Kawano +6
Polarimetric studies of astrophysical sources can make important contributions to resolve the geometry of the emitting region and determine the photon emission mechanism. PoGOLite…
Pathfinder flight of the Polarized Gamma-ray Observer (PoGOLite) in 2013
Takafumi Kawano
The Polarized Gamma-ray Observer (PoGOLite) is a balloon-borne instrument that can measure polarization in the energy range 25--240 keV. The instrument adopts an array of well-type…
Observations of Gamma-ray Bursts with ASTRO-H and Fermi
M. Ohno, T. Kawano, M. S. Tashiro +9
ASTRO-H, the sixth Japanese X-ray observatory, which is scheduled to be launched by the end of Japanese fiscal year 2015 has a capability to observe the prompt emission from Gamma-…
PoGOLino: a scintillator-based balloon-borne neutron detector
Merlin Kole, Maxime Chauvin, Yasushi Fukazawa +12
PoGOLino is a balloon-borne scintillator-based experiment developed to study the largely unexplored high altitude neutron environment at high geomagnetic latitudes. The instrument…
A Balloon-borne Measurement of High Latitude Atmospheric Neutrons Using a LiCAF Neutron Detector
Merlin Kole, Yasushi Fukazawa, Kentaro Fukuda +12
PoGOLino is a scintillator-based neutron detector. Its main purpose is to provide data on the neutron flux in the upper stratosphere at high latitudes at thermal and nonthermal ene…
Associating long-term gamma-ray variability with the superorbital period of LS I 61 303
LAT Collaboration
Gamma-ray binaries are stellar systems for which the spectral energy distribution (discounting the thermal stellar emission) peaks at high energies. Detected from radio to TeV gamm…
Constraints on the Galactic Population of TEV Pulsar Wind Nebulae Using Fermi Large Area Telescope Observations
F. Acero, M. Ackermann, M. Ajello +155
Pulsar wind nebulae (PWNe) have been established as the most populous class of TeV gamma-ray emitters. Since launch, the Fermi Large Area Telescope (LAT)identified five high-energy…
The First Fermi-LAT Catalog of Sources Above 10 GeV
LAT Collaboration
We present a catalog of gamma-ray sources at energies above 10 GeV based on data from the Large Area Telescope (LAT) accumulated during the first three years of the Fermi Gamma-ray…