2.3k citations · 3.1k across the 23 of their papers we have counts for
25 papers
Science-driven design and performance evaluation of a Silicon Laue Component lens for hard X-ray polarimetry
L. Abalo, N. M. Barrière, M. W. Beijersbergen
Focusing hard X-rays above 80 keV is challenging for grazing-incidence optics. Laue lenses offer an alternative based on crystal diffraction. We assess a lens based on Silicon Laue…
First light of BEaTriX, the new testing facility for the modular X-ray optics of the ATHENA mission
S. Basso, B. Salmaso, D. Spiga +35
The Beam Expander Testing X-ray facility (BEaTriX) is a unique X-ray apparatus now operated at the Istituto Nazionale di Astrofisica (INAF), Osservatorio Astronomico di Brera (OAB)…
Silicon Pore Optics
Nicolas M. Barrière, Marcos Bavdaz, Maximilien J. Collon +4
Silicon Pore Optics (SPO) uses commercially available monocrystalline double-sided super-polished silicon wafers as a basis to produce mirrors that form lightweight high-resolution…
Sagittarius A* High Energy X-ray Flare Properties During NuSTAR Monitoring of the Galactic Center from 2012 to 2015
Shuo Zhang, Frederick K. Baganoff, Gabriele Ponti +17
Understanding the origin of the flaring activity from the Galactic center supermassive black hole, Sagittarius A*, is a major scientific goal of the NuSTAR Galactic plane survey ca…
NuSTAR Hard X-ray Survey of the Galactic Center Region II: X-ray Point Sources
JaeSub Hong, Kaya Mori, Charles J. Hailey +41
We present the first survey results of hard X-ray point sources in the Galactic Center (GC) region by NuSTAR. We have discovered 70 hard (3-79 keV) X-ray point sources in a 0.6 deg…
NuSTAR Hard X-ray Survey of the Galactic Center Region I: Hard X-ray Morphology and Spectroscopy of the Diffuse Emission
Kaya Mori, Charles J. Hailey, Roman Krivonos +35
We present the first sub-arcminute images of the Galactic Center above 10 keV, obtained with NuSTAR. NuSTAR resolves the hard X-ray source IGR J17456-2901 into non-thermal X-ray fi…
Exploring plasma evolution during Sagittarius A* flares
Salome Dibi, Sera Markoff, Renaud Belmont +3
We present a new way of describing the flares from Sgr A* with a self-consistent calculation of the particle distribution. All relevant radiative processes are taken into account i…
Chandra Identification of Two AGN Discovered by INTEGRAL
John A. Tomsick, Roman Krivonos, Farid Rahoui +5
Here, we report on observations of two hard X-ray sources that were originally discovered with the INTEGRAL satellite: IGR J04059+5416 and IGR J08297-4250. We use the Chandra X-ray…
The X-ray Flux Distribution of Sagittarius A* as Seen by Chandra
J. Neilsen, S. Markoff, M. A. Nowak +11
We present a statistical analysis of the X-ray flux distribution of Sgr A* from the Chandra X-ray Observatory's 3 Ms Sgr A* X-ray Visionary Project (XVP) in 2012. Our analysis indi…
NuSTAR observation of a Type I X-ray burst from GRS 1741.9-2853
Nicolas M. Barrière, Roman Krivonos, John A. Tomsick +11
We report on two NuSTAR observations of GRS 1741.9-2853, a faint neutron star low mass X-ray binary burster located 10' away from the Galactic center. NuSTAR detected the source se…
Source identification in the IGR J17448-3232 field: discovery of the Scorpius galaxy cluster
Nicolas M. Barrière, John A. Tomsick, Daniel R. Wik +2
We use a 43-ks XMM-Newton observation to investigate the nature of sources first distinguished by a follow-up Chandra observation of the field surrounding INTEGRAL source IGR J1744…
Initial Results from NuSTAR Observations of the Norma Arm
Arash Bodaghee, John A. Tomsick, Roman Krivonos +12
Results are presented for an initial survey of the Norma Arm gathered with the focusing hard X-ray telescope NuSTAR. The survey covers 0.2 deg of sky area in the 3-79 keV range…
NuSTAR detection of high-energy X-ray emission and rapid variability from Sagittarius A* flares
Nicolas M. Barrière, John A. Tomsick, Frederick K. Baganoff +13
Sagittarius A* harbors the supermassive black hole that lies at the dynamical center of our Galaxy. Sagittarius A* spends most of its time in a low luminosity emission state but fl…
X-ray Spectral Components in the Afterglow of GRB 130925A
Eric C. Bellm, Nicolas M. Barriere, Varun Bhalerao +19
We have identified spectral features in the late-time X-ray afterglow of the unusually long, slow-decaying GRB 130925A using NuSTAR, Swift-XRT, and Chandra. A spectral component in…
First hard X-ray detection of the non-thermal emission around the Arches cluster: morphology and spectral studies with NuSTAR
Roman A. Krivonos, John A. Tomsick, Franz E. Bauer +15
The Arches cluster is a young, densely packed massive star cluster in our Galaxy that shows a high level of star formation activity. The nature of the extended non-thermal X-ray em…
Developing a method for soft gamma-ray Laue lens assembly and calibration
Nicolas M. Barrière, John A. Tomsick, Steven E. Boggs +6
Laue lenses constitute a promising option for concentrating soft gamma rays with a large collection area and reasonable focal lengths. In astronomy they could lead to increased tel…
SN 2010jl: Optical to hard X-ray observations reveal an explosion embedded in a ten solar mass cocoon
E. O. Ofek, A. Zoglauer, S. E. Boggs +24
(Abridged) Some supernovae (SNe) may be powered by the interaction of the SN ejecta with a large amount of circumstellar matter (CSM). Here we outline a method to measure the mass…
NuSTAR discovery of a 3.76-second transient magnetar near Sagittarius A*
Kaya Mori, Eric V. Gotthelf, Shuo Zhang +20
We report the discovery of 3.76-s pulsations from a new burst source near Sgr A* observed by the NuSTAR Observatory. The strong signal from SGR J1745-29 presents a complex pulse pr…
The Nuclear Spectroscopic Telescope Array (NuSTAR) Mission
Fiona A. Harrison, William W. Craig, Finn E. Christensen +77
The Nuclear Spectroscopic Telescope Array (NuSTAR) mission, launched on 13 June 2012, is the first focusing high-energy X-ray telescope in orbit. NuSTAR operates in the band from 3…
Developing a second generation Laue lens prototype: high reflectivity crystals and accurate assembly
Nicolas M. Barrière, John A. Tomsick, Steven E. Boggs +2
Laue lenses are an emerging technology that will enhance gamma-ray telescope sensitivity by one to two orders of magnitude in selected energy bands of the \sim 100 keV to \sim 1.5…
Hard X / soft gamma ray polarimetry using a Laue lens
Nicolas M. Barrière, Lorenzo Natalucci, Pietro Ubertini
Hard X / soft gamma-ray polarimetric analysis can be performed efficiently by the study of Compton scattering anisotropy in a detector composed of fine pixels. But in the energy ra…
Unveiling Physical Processes in Type Ia Supernovae With a Laue Lens Telescope
Nicolas M. Barrière, John A Tomsick, Steven E. Boggs +2
We present in this paper a focusing gamma-ray telescope that has only one goal: addressing the true nature of Type Ia Supernovae (SNe Ia). This telescope is based on a Laue lens fo…
Soft gamma-ray optics: new Laue lens design and performance estimates
N. Barriere, L. Natalucci, N. Abrosimov +7
Laue lenses are an emerging technology based on diffraction in crystals that allows the concentration of soft gamma rays. This kind of optics that works in the 100 keV - 1.5 MeV ba…
Experimental and theoretical study of diffraction properties of various crystals for the realization of a soft gamma-ray Laue lens
Nicolas Barriere, Julien Rousselle, Peter von Ballmoos +10
Crystals are the elementary constituents of Laue lenses, an emerging technology which could allow the realization of a space borne telescope 10 to 100 times more sensitive than exi…