555 citations · 3.3k across the 37 of their papers we have counts for
23 papers · 1 filter
The Gamow Explorer: A gamma-ray burst observatory to study the high redshift universe and enable multi-messenger astrophysics
N. E. White, F. E. Bauer, W. Baumgartner +63
The Gamow Explorer will use Gamma Ray Bursts (GRBs) to: 1) probe the high redshift universe (z > 6) when the first stars were born, galaxies formed and Hydrogen was reionized; and…
The NuSTAR Extragalactic Surveys: X-ray spectroscopic analysis of the bright hard-band selected sample
L. Zappacosta, A. Comastri, F. Civano +23
We discuss the spectral analysis of a sample of 63 Active Galactic Nuclei (AGN) detected above a limiting flux of keV erg/s/cm in the multi-tiered N…
BAT AGN Spectroscopic Survey - V. X-ray properties of the Swift/BAT 70-month AGN catalog
Claudio Ricci, Benny Trakhtenbrot, Michael J. Koss +18
Hard X-ray ( keV) observations of Active Galactic Nuclei (AGN) can shed light on some of the most obscured episodes of accretion onto supermassive black holes. The 70-mont…
A New Compton-thick AGN in our Cosmic Backyard: Unveiling the Buried Nucleus in NGC 1448 with NuSTAR
A. Annuar, D. M. Alexander, P. Gandhi +22
NGC 1448 is one of the nearest luminous galaxies ( 10) to ours ( 0.00390), and yet the active galactic nucleus (AGN) it hosts was only recent…
The NuSTAR Serendipitous Survey: The 40 month Catalog and the Properties of the Distant High Energy X-ray Source Population
G. B. Lansbury, D. Stern, J. Aird +35
We present the first full catalog and science results for the NuSTAR serendipitous survey. The catalog incorporates data taken during the first 40 months of NuSTAR operation, which…
Long-Term X-ray Variability of Typical Active Galactic Nuclei in the Distant Universe
G. Yang, W. Brandt, B. Luo +13
We perform long-term ( yr, observed-frame) X-ray variability analyses of the 68 brightest radio-quiet active galactic nuclei (AGNs) in the 6 Ms Deep Field-Sou…
X-Ray and Radio Emission from the Luminous Supernova 2005kd
Vikram V. Dwarkadas, C. Romero-Cañizales, R. Reddy +1
SN 2005kd is among the most luminous supernovae (SNe) to be discovered at X-ray wavelengths. We have re-analysed all good angular resolution (better than FWHM PSF) archival X…
The weak neutral Fe fluorescence line and long-term X-ray evolution of the Compton-thick AGN in NGC 7674
P. Gandhi, A. Annuar, G. B. Lansbury +26
We present X-ray observations of the active galactic nucleus (AGN) in NGC 7674. The source shows a flat X-ray spectrum, suggesting that it is obscured by Compton-thick gas…
A New Population of Compton-Thick AGN Identified Using the Spectral Curvature Above 10 keV
Michael J. Koss, R. Assef, M. Balokovic +18
We present a new metric that uses the spectral curvature (SC) above 10 keV to identify Compton-thick AGN in low-quality Swift BAT X-ray data. Using NuSTAR, we observe nine high SC-…
Compton-thick Accretion in the local Universe
C. Ricci, Y. Ueda, M. J. Koss +3
Heavily obscured accretion is believed to represent an important stage in the growth of supermassive black holes, and to play an important role in shaping the observed spectrum of…
The NuSTAR Extragalactic Surveys: Initial Results and Catalog from the Extended Chandra Deep Field South
J. R. Mullaney, A. Del-Moro, J. Aird +33
We present initial results and the source catalog from the NuSTAR survey of the Extended Chandra Deep Field South (hereafter, ECDFS) - currently the deepest contiguous component of…
The NuSTAR Extragalactic Surveys: Overview and Catalog from the COSMOS Field
F. Civano, R. C. Hickox, S. Puccetti +28
To provide the census of the sources contributing to the X-ray background peak above 10 keV, NuSTAR is performing extragalactic surveys using a three-tier "wedding cake" approach.…
NuSTAR catches the unveiling nucleus of NGC 1068
A. Marinucci, S. Bianchi, G. Matt +15
We present a NuSTAR and XMM-Newton monitoring campaign in 2014/2015 of the Compton-thick Seyfert 2 galaxy, NGC 1068. During the August 2014 observation, we detect with NuSTAR a flu…
The NuSTAR view of reflection and absorption in NGC 7582
E. Rivers, M. Baloković, P. Arévalo +14
NGC 7582 is a well-studied X-ray bright Seyfert 2 with moderately heavy (~cm), highly variable absorption and strong reflection spectral fea…
The NuSTAR Extragalactic Surveys: The Number Counts of Active Galactic Nuclei and the Resolved Fraction of the Cosmic X-ray Background
F. A. Harrison, J. Aird, F. Civano +41
We present the 3-8 keV and 8-24 keV number counts of active galactic nuclei (AGN) identified in the NuSTAR extragalactic surveys. NuSTAR has now resolved 33-39% of the X-ray backgr…
The Seyfert 2 galaxy NGC 2110: hard X-ray emission observed by NuSTAR and variability of the iron K line
A. Marinucci, G. Matt, S. Bianchi +16
We present NuSTAR observations of the bright Seyfert 2 galaxy NGC 2110 obtained in 2012, when the source was at the highest flux level ever observed, and in 2013, when the source w…
NuSTAR Spectroscopy of Multi-Component X-ray Reflection from NGC 1068
Franz E. Bauer, Patricia Arevalo, Dominic J. Walton +26
We report on observations of NGC1068 with NuSTAR, which provide the best constraints to date on its ~keV spectral shape. We find no strong variability over the past two decade…
The NuSTAR View of Nearby Compton-thick AGN: The Cases of NGC 424, NGC 1320 and IC 2560
M. Baloković, A. Comastri, F. A. Harrison +25
We present X-ray spectral analyses for three Seyfert 2 active galactic nuclei, NGC 424, NGC 1320, and IC 2560, observed by NuSTAR in the 3-79 keV band. The high quality hard X-ray…
Weak Hard X-ray Emission from Broad Absorption Line Quasars: Evidence for Intrinsic X-ray Weakness
B. Luo, W. N. Brandt, D. M. Alexander +19
We report NuSTAR observations of a sample of six X-ray weak broad absorption line (BAL) quasars. These targets, at z=0.148-1.223, are among the optically brightest and most luminou…
NuSTAR unveils a Compton-thick Type 2 quasar in Mrk 34
P. Gandhi, G. B. Lansbury, D. M. Alexander +27
We present Nustar 3-40 keV observations of the optically selected Type 2 quasar (QSO2) SDSS J1034+6001 or Mrk 34. The high-quality hard X-ray spectrum and archival XMM-Newton data…
Simultaneous NuSTAR and XMM-Newton 0.5-80 keV spectroscopy of the Narrow Line Seyfert 1 galaxy SWIFT J2127.4+5654
A. Marinucci, G. Matt, E. Kara +20
We present a broad band spectral analysis of the joint XMM-Newton and NuSTAR observational campaign of the Narrow Line Seyfert 1 SWIFT J2127.4+5654, consisting of 300 ks performed…
{\it NuSTAR} Reveals an Intrinsically X-ray Weak Broad Absorption Line Quasar in the Ultraluminous Infrared Galaxy Markarian 231
Stacy H. Teng, W. N. Brandt, F. A. Harrison +24
We present high-energy (3--30 keV) {\it NuSTAR} observations of the nearest quasar, the ultraluminous infrared galaxy (ULIRG) Markarian 231 (Mrk 231), supplemented with new and sim…
An Extremely Luminous and Variable Ultraluminous X-ray Source in the Outskirts of Circinus Observed with NuSTAR
D. J. Walton, F. Fuerst, F. A. Harrison +16
Following a serendipitous detection with the NuSTAR observatory, we present a multi-epoch spectral and temporal analysis of an extreme ultraluminous X-ray source (ULX) located in t…