Browsing by Author "Boggs, S."
Now showing 1 - 17 of 17
Results Per Page
Sort Options
- ItemA New Compton-thick AGN in Our Cosmic Backyard: Unveiling the Buried Nucleus in NGC 1448 with NuSTAR(2017) Annuar, A.; Alexander, D.; Gandhi, P.; Lansbury, G.; Asmus, D.; Ballantyne, D.; Bauer, Franz Erik; Boggs, S.; Boorman, P.; Brandt W.; Brightman, M.|Christensen, F.; Craig, W.; Farrah, D.; Goulding, A.; Hailey, C.; Harrison, F.; Koss, M.; Lamassa, S.; Murray, S.; Ricci, Claudio; Rosario, D.; Stanley, F.; Stern, D.; Zhang, W.
- ItemExtended hard-X-ray emission in the inner few parsecs of the Galaxy(2015) Perez, K.; Hailey, C.; Bauer, Franz Erik; Krivonos, R.; Mori, K.; Baganoff, F.; Barriere, N.; Boggs, S.; Christensen, F.
- ItemFirst hard X-ray detection of the non-thermal emission around the arches cluster : Morphology and spectral studies with NuStar(2014) Krivonos, R.; Tomsick, J.; Bauer, Franz Erik; Baganoff, F.; Barriere, N.; Bodaghee, A.; Boggs, S.; Christensen, F.
- ItemHard X-ray emission of the luminous infrared galaxy NGC 6240 as observed by NuSTAR(2016) Puccetti, S.; Comastri, A.; Bauer, Franz Erik; Brandt, W.; Fiore, E.; Harrison, F.; Luo, B.; Stern, D.; Urry, C.; Alexander, D.; Annuar, A.; Arevalo, P.; Balokovic, M.; Boggs, S.; Brightman, M.; Craig, W.; Ricci, Claudio
- ItemHIGH-ENERGY X-RAY DETECTION OF G359.89-0.08 (SGR A-E) : MAGNETIC FLUX TUBE EMISSION POWERED BY COSMIC RAYS?(2014) Zhang, S.; Hailey, C.; Baganoff, F.; Bauer, Franz Erik; Boggs, S.; Craig, W.; Christensen, F.; Gotthelf, E.
- ItemNustar and suzaku X-Ray spectroscopy of NGC 4151: evidence for reflection from the inner accretion disk(2015) Keck, M.; Brenneman, L.; Ballantyne, D.; Bauer, Franz Erik; Boggs, S.; Christensen, F.; Craig, W.; Dauser, T.; Elvis, M.; Fabian, A.; Fuerst, F.; García, J.; Grefenstette, B.; Hailey, C.; Harrison, F.; Madejski, G.; Marinucci, A.; Matt, G.; Reynolds, C.; Stern, D.; Walton, D.; Zoghbi, A.
- ItemNuSTAR and XMM-Newton observations of NGC 1365 : Extreme absorption variability and a constant inner accretion disk(2014) Walton, D.; Risaliti, G.; Harrison, F.; Fabian, A.; Miller, J.; Arévalo, Patricia; Ballantyne, D.; Boggs, S.
- ItemNuStar hard X-Ray survey of the galactic center region. I. Hard X-Ray morphology and spectroscopy of the diffuse emission(2015) Mori, K.; Hailey, C.; Krivonos, R.; Hong, J.; Ponti, G.; Bauer, Franz Erik; Pérez, K.; Nynka, M.; Zhang, S.; Tomsick, J.; Alexander, D.; Baganoff, F.; Barret, D.; Barriere, N.; Boggs, S.; Canipe, A.
- ItemNuSTAR J163433-4738.7: A fast X-ray transient in the galactic plane(2014) Tomsick, J.; Gotthelf, E.; Rahoui, F.; Assef, R.; Bauer, Franz Erik; Bodaghee, A.; Boggs, S.; Christensen, F.
- ItemNuStar observations of the compton-thick active galactic nucleus and ultraluminous X-Ray source candidate in NGC 5643(2015) Annuar, A.; Gandhi, P.; Alexander, D.; Lansbury, G.; Arévalo, P.; Ballantyne, D.; Balokovic, M.; Boggs, S.; Brandt, W.; Brightman, M.; Christensen, F.; Craig, W.; Del Moro, A.; Hailey, C.; Harrison, F.; Bauer, Franz Erik
- ItemNuStar reveals extreme absorption in z < 0.5 type 2 quasars(2015) Lansbury, G.; Gandhi, P.; Alexander, D.; Assef, R.; Aird, J.; Annuar, A.; Ballantyne, D.; Balokovic, M.; Bauer, Franz Erik; Boggs, S.; Brandt, W.; Brightman, M.; Christensen, F.; Civano, F.; Comastri, A.; Craig, W.
- ItemNuStar spectroscopy of multiI-component X-Ray reflection from NGC 1068(2015) Bauer, Franz Erik; Arévalo, P.; Walton, D.; Koss, M.; Puccetti, S.; Gandhi, P.; Stern, D.; Alexander, D.; Balokovic, M.; Boggs, S.; Brandt, W.; Brightman, M.; Christensen, F.; Comastri, A.; Craig, W.; Del Moro, A.
- ItemNuSTAR unveils a Compton-thick type 2 quasar in Mrk 34(2014) Gandhi, P.; Lansbury, G.; Alexander, D.; Stern, D.; Arevalo, P.; Ballantyne, D.; Balokovic, M.; Bauer, Franz Erik; Boggs, S.; Brandt, W.
- ItemNuSTAR. reveals the extreme properties of the super-Eddington accreting supermassive black hole in PG. 1247+267(2016) Lanzuisi, G.; Perna, M.; Comastri, A.; Cappi, M.; Dadina, M.; Marinucci, A.; Masini, A.; Matt, G.; Vagnetti, F.; Bauer, Franz Erik; Vignali, C.; Ballantyne, D.; Boggs, S.; Brandt, W.; Brusa, M.; Craig, W.; Ricci, Claudio
- ItemThe NuSTAR view of nearby compton-thick active galactic nuclei: The cases of NGC 424, NGC 1320, and IC 2560(2014) Balokovic, M.; Comastri, A.; Harrison, F.; Alexander, D.; Ballantyne, D.; Bauer, Franz Erik; Boggs, S.; Brandt, W.; Brightman, M.
- ItemThe NuSTAR view of the non-thermal emission from PSR J0437-4715(OXFORD UNIV PRESS, 2016) Guillot, S.; Kaspi, V. M.; Archibald, R. F.; Bachetti, M.; Flynn, C.; Jankowski, F.; Bailes, M.; Boggs, S.; Christensen, F. E.; Craig, W. W.; Hailey, C. A.; Harrison, F. A.; Stern, D.; Zhang, W. W.We present a hard X-ray Nuclear Spectroscopic Telescope Array (NuSTAR) observation of PSR J0437-4715, the nearest millisecond pulsar. The known pulsations at the apparent pulse period similar to 5.76 ms are observed with a significance of 3.7 sigma, at energies up to 20 keV above which the NuSTAR background dominates. We measure a photon index Gamma = 1.50 +/- 0.25 (90 per cent confidence) for the power-law fit to the non-thermal emission. It had been shown that spectral models with two or three thermal components fit the XMM-Newton spectrum of PSR J0437-4715, depending on the slope of the power-law component, and the amount of absorption of soft X-rays. The new constraint on the high-energy emission provided by NuSTAR removes ambiguities regarding the thermal components of the emission below 3 keV. We performed a simultaneous spectral analysis of the XMM-Newton and NuSTAR data to confirm that three thermal components and a power law are required to fit the 0.3-20 keV emission of PSR J0437-4715. Adding a ROSAT-PSPC spectrum further confirmed this result and allowed us to better constrain the temperatures of the three thermal components. A phase-resolved analysis of the NuSTAR data revealed no significant change in the photon index of the high-energy emission. This NuSTAR observation provides further impetus for future observations with the NICER mission (Neutron Star Interior Composition Explorer) whose sensitivity will provide much stricter constraints on the equation of state of nuclear matter by combining model fits to the pulsar's phase-folded light curve with the pulsar's well-defined mass and distance from radio timing observations.
- ItemThe Phoenix galaxy as seen by NuSTAR(2017) Masini, A.; Comastri, A.; Puccetti, S.; Balokovic, M.; Gandhi, P.; Guainazzi, M.; Boggs, S.; Ricci, Claudio; Bauer, Franz Erik; Boorman, P.; Brightman, M.; Christensen, F.; Craig, W.; Farrah, D.; Hailey, C.; Harrison, F.; Koss, M.