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Items where Person is "Gandhi-Poshak"

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Number of items: 61.

2019

Buisson, D. J. K. and Fabian, A. C. and Barret, D. et al. (2019) MAXI J1820+070 with NuSTAR I. An increase in variability frequency but a stable reflection spectrum: coronal properties and implications for the inner disc in black hole binaries. . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20190917-134739032

Xu, Yanjun and Harrison, Fiona A. and Tomsick, John A. et al. (2019) Broadband X-ray Spectral and Timing Analyses of the Black Hole Binary Candidate Swift J1658.2-4242: Rapid Flux Variation and the Turn-on of a Transient QPO. Astrophysical Journal, 879 (2). Art. No. 93. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20190619-085644567

Hickox, R. C. and Civano, F. and Ballantyne, D. R. et al. (2019) Resolving the cosmic X-ray background with a next-generation high-energy X-ray observatory. Astro2020 Science White Paper, . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20190619-095513937

García, Javier A. and Bachetti, Matteo and Ballantyne, David R. et al. (2019) Probing the Black Hole Engine with Measurements of the Relativistic X-ray Reflection Component. . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20190619-103025261

Yan, Wei and Hickox, Ryan C. and Hainline, Kevin N. et al. (2019) NuSTAR and Keck Observations of Heavily Obscured Quasars Selected by WISE. Astrophysical Journal, 870 (1). Art. No. 33. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20181108-091200724

2018

Brightman, M. and Baloković, M. and Koss, M. et al. (2018) A Long Hard-X-Ray Look at the Dual Active Galactic Nuclei of M51 with NuSTAR. Astrophysical Journal, 867 (2). Art. No. 110. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20181106-105511630

Xu, Yanjun and Harrison, Fiona A. and Kennea, Jamie A. et al. (2018) The Hard State of the Highly Absorbed High Inclination Black Hole Binary Candidate Swift J1658.2–4242 Observed by NuSTAR and Swift. Astrophysical Journal, 865 (1). Art. No. 18. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20180918-091012752

Boorman, Peter G. and Gandhi, Poshak and Baloković, Mislav et al. (2018) An Iwasawa-Taniguchi Effect for Compton-thick Active Galactic Nuclei. Monthly Notices of the Royal Astronomical Society, 477 (3). pp. 3775-3790. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20180620-160311395

Tomsick, John A. and Parker, Michael L. and García, Javier A. et al. (2018) Alternative Explanations for Extreme Supersolar Iron Abundances Inferred from the Energy Spectrum of Cygnus X-1. Astrophysical Journal, 855 (1). Art. No. 3. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20180227-133907106

Masini, A. and Civano, F. and Comastri, A. et al. (2018) The NuSTAR Extragalactic Surveys: Source Catalog and the Compton-thick Fraction in the UDS Field. Astrophysical Journal Supplement Series, 235 (1). Art. No. 17. ISSN 1538-4365. https://resolver.caltech.edu/CaltechAUTHORS:20180308-120302328

Sartori, Lia F and Schawinski, Kevin and Koss, Michael J. et al. (2018) Joint NuSTAR and Chandra analysis of the obscured quasar in IC 2497 - Hanny's Voorwerp system. Monthly Notices of the Royal Astronomical Society, 474 (2). pp. 2444-2451. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20180301-135652234

Baloković, M. and Brightman, M. and Harrison, F. A. et al. (2018) New Spectral Model for Constraining Torus Covering Factors from Broadband X-Ray Spectra of Active Galactic Nuclei. Astrophysical Journal, 854 (1). Art. No. 42. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20180212-071654657

Xu, Yanjun and Harrison, Fiona A. and García, Javier A. et al. (2018) Reflection Spectra of the Black Hole Binary Candidate MAXI J1535-571 in the Hard State Observed by NuSTAR. Astrophysical Journal Letters, 852 (2). Art. No. L34. ISSN 2041-8213. https://resolver.caltech.edu/CaltechAUTHORS:20180116-152713791

2017

Kosec, P. and Brightman, M. and Stern, D. et al. (2017) Investigating the Evolution of the Dual AGN System ESO 509-IG066. Astrophysical Journal, 850 (2). Art. No. 168. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20171128-141327069

Ricci, C. and Trakhtenbrot, B. and Koss, M. J. et al. (2017) BAT AGN Spectroscopic Survey. V. X-Ray Properties of the Swift/BAT 70-month AGN Catalog. Astrophysical Journal Supplement Series, 233 (2). Art. No. 17. ISSN 1538-4365. https://resolver.caltech.edu/CaltechAUTHORS:20171206-080317236

Gandhi, P. and Harrison, F. A. (2017) An elevation of 0.1 light-seconds for the optical jet base in an accreting Galactic black hole system. Nature Astronomy, 1 (12). pp. 859-864. ISSN 2397-3366. https://resolver.caltech.edu/CaltechAUTHORS:20170829-115834040

Del Moro, A. and Alexander, D. M. and Aird, J. A. et al. (2017) The NuSTAR Extragalactic Survey: Average Broadband X-Ray Spectral Properties of the NuSTAR-detected AGNs. Astrophysical Journal, 849 (1). Art. No. 57. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20171031-103333243

Brightman, M. and Baloković, M. and Ballantyne, D. R. et al. (2017) X-ray bolometric corrections for Compton-thick active galactic nuclei. Astrophysical Journal, 844 (1). Art. No. 10. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20170601-152924591

Gandhi, P. and Annuar, A. and Lansbury, G. B. et al. (2017) The weak Fe fluorescence line and long-term X-ray evolution of the Compton-thick active galactic nucleus in NGC 7674. Monthly Notices of the Royal Astronomical Society, 467 (4). pp. 4606-4621. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20170428-150646304

Tortosa, A. and Marinucci, A. and Matt, G. et al. (2017) Broadband X-ray spectral analysis of the Seyfert 1 galaxy GRS 1734-292. Monthly Notices of the Royal Astronomical Society, 466 (4). pp. 4193-4200. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20170623-134323659

Walton, D. J. and Mooley, K. and King, A. L. et al. (2017) Living on a Flare: Relativistic Reflection in V404 Cyg Observed by NuSTAR During its Summer 2015 Outburst. Astrophysical Journal, 839 (2). Art. No. 110. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20161117-111407065

Chen, C.-T. J. and Brandt, W. N. and Reines, A. E. et al. (2017) Hard X-Ray-selected AGNs in Low-mass Galaxies from the NuSTAR Serendipitous Survey. Astrophysical Journal, 837 (1). Art. No. 48. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20170201-075210760

Rahoui, Farid and Tomsick, J. A. and Gandhi, P. et al. (2017) The nova-like nebular optical spectrum of V404 Cygni at the beginning of the 2015 outburst decay. Monthly Notices of the Royal Astronomical Society, 465 (4). pp. 4468-4481. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20170331-120251653

Annuar, A. and Alexander, D. M. and Gandhi, P. et al. (2017) A New Compton-thick AGN in Our Cosmic Backyard: Unveiling the Buried Nucleus in NGC 1448 with NuSTAR. Astrophysical Journal, 836 (2). Art. No. 165. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20170222-080503232

Masini, A. and Comastri, A. and Puccetti, S. et al. (2017) The Phoenix galaxy as seen by NuSTAR. Astronomy and Astrophysics, 597 . Art. No. A100. ISSN 0004-6361. https://resolver.caltech.edu/CaltechAUTHORS:20170310-121538992

2016

Boorman, Peter G. and Gandhi, P. and Alexander, D. M. et al. (2016) IC 3639—A New Bona Fide Compton-Thick AGN Unveiled by NuSTAR. Astrophysical Journal, 833 (2). Art. No. 245. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20161220-081623292

Fürst, F. and Grinberg, V. and Tomsick, J. A. et al. (2016) Spectro-Timing Study of GX 339-4 in a Hard Intermediate State. Astrophysical Journal, 828 (1). Art. No. 34. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20160829-082500504

Brightman, M. and Masini, A. and Ballantyne, D. R. et al. (2016) A Growth-rate Indicator for Compton-thick Active Galactic Nuclei. Astrophysical Journal, 826 (1). Art. No. 93. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20160802-065750850

Koss, Michael J. and Assef, R. and Baloković, M. et al. (2016) A New Population of Compton-thick AGNs Identified Using the Spectral Curvature above 10 keV. Astrophysical Journal, 825 (2). Art. No. 85. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20160729-140218146

Koss, Michael J. and Glidden, Ana and Baloković, Mislav et al. (2016) NuSTAR Resolves the First Dual AGN Above 10 keV in SWIFT J2028.5+2543. Astrophysical Journal Letters, 824 (1). Art. No. L4. ISSN 2041-8205. https://resolver.caltech.edu/CaltechAUTHORS:20160601-100649101

Shaw, A. W. and Gandhi, P. and Altamirano, D. et al. (2016) A low-luminosity soft state in the short-period black hole X-ray binary Swift J1753.5-0127. Monthly Notices of the Royal Astronomical Society, 458 (2). pp. 1636-1644. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20160602-082013397

Masini, A. and Comastri, A. and Baloković, M. et al. (2016) NuSTAR observations of water megamaser AGN. Astronomy and Astrophysics, 589 . Art. No. A59. ISSN 0004-6361. https://resolver.caltech.edu/CaltechAUTHORS:20160318-101742575

Rana, Vikram and Loh, Alan and Corbel, Stéphane et al. (2016) Characterizing X-ray and Radio emission in the Black Hole X-Ray Binary V404 Cygni during Quiescence. Astrophysical Journal, 821 (2). Art. No. 103. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150801-085134688

Ricci, C. and Bauer, F. E. and Arevalo, P. et al. (2016) IC 751: a new changing-look AGN discovered by NuSTAR. Astrophysical Journal, 820 (1). Art. No. 5. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20160317-141351548

Marinucci, A. and Bianchi, S. and Matt, G. et al. (2016) NuSTAR catches the unveiling nucleus of NGC 1068. Monthly Notices of the Royal Astronomical Society: Letters, 456 (1). L94-L98. ISSN 1745-3925. https://resolver.caltech.edu/CaltechAUTHORS:20160128-143037685

Puccetti, S. and Comastri, A. and Bauer, F. E. et al. (2016) Hard X-ray emission of the luminous infrared galaxy NGC 6240 as observed by NuSTAR. Astronomy and Astrophysics, 585 . Art. No. A157. ISSN 0004-6361. https://resolver.caltech.edu/CaltechAUTHORS:20160204-180325331

2015

Annuar, A. and Gandhi, P. and Alexander, D. M. et al. (2015) NuSTAR Observations of the Compton-thick Active Galactic Nucleus and Ultraluminous X-ray Source Candidate in NGC 5643. Astrophysical Journal, 815 (1). Art. No. 36. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20160115-121320570

Rivers, E. and Baloković, M. and Arévalo, P. et al. (2015) The NuSTAR view of reflection and absorption in NGC 7582. Astrophysical Journal, 815 (1). p. 55. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20160115-072024011

Teng, Stacy H. and Rigby, Jane R. and Stern, Daniel et al. (2015) A NuSTAR Survey of Nearby Ultraluminous Infrared Galaxies. Astrophysical Journal, 814 (1). Art. No. 56. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20151022-145255616

Tao, Lian and Tomsick, John A. and Walton, Dominic J. et al. (2015) NuSTAR and Swift observations of the black hole candidate XTE J1908+094 during its 2013 outburst. Astrophysical Journal, 811 (1). Art. No. 51. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150802-092031817

Rahoui, Farid and Tomsick, John A. and Coriat, Mickael et al. (2015) Optical and Near-Infrared Spectroscopy of the Black Hole Swift J1753.5-0127. Astrophysical Journal, 810 (2). Art. No. 161. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20151027-124325882

Lansbury, G. B. and Gandhi, P. and Alexander, D. M. et al. (2015) NuSTAR Reveals Extreme Absorption in z < 0.5 Type 2 Quasars. Astrophysical Journal, 809 (2). Art. No. 115. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150708-124636254

Civano, F. and Hickox, R. C. and Puccetti, S. et al. (2015) The NuSTAR Extragalactic Surveys: Overview and catalog from the COSMOS field. Astrophysical Journal, 808 (2). Art. No. 185. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150907-154658360

Fürst, F. and Nowak, M. A. and Tomsick, J. A. et al. (2015) The complex accretion geometry of GX 339-4 as seen by NuSTAR and Swift. Astrophysical Journal, 808 (2). Art. No. 122. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150802-092749093

Annuar, Adlyka and Gandhi, Poshak and Alexander, Dave et al. (2015) Constraining the Population of Compton-Thick AGN and N_H Distribution in the Local Universe. In: International Conference on Space Science and Communication (IconSpace), 2015. IEEE , Piscataway, NJ, pp. 329-331. ISBN 978-1-4799-1939-0. https://resolver.caltech.edu/CaltechAUTHORS:20161014-095514513

Tomsick, John A. and Rahoui, Farid and Kolehmainen, Mari et al. (2015) The Accreting Black Hole Swift J1753.5-0127 from Radio to Hard X-Ray. Astrophysical Journal, 808 (1). Art. No. 85. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150802-075928230

Parker, M. L. and Tomsick, J. A. and Miller, J. M. et al. (2015) NuSTAR and Suzaku observations of the hard state in Cygnus X-1: locating the inner accretion disk. Astrophysical Journal, 808 (1). Art. No. 9. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150802-155802162

Koss, Michael J. and Romero-Cañizales, C. and Baronchelli, L. et al. (2015) Broadband Observations of the Compton-thick Nucleus of NGC 3393. Astrophysical Journal, 807 (2). Art. No. 149. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150802-194947106

Mullaney, J. R. and Del-Moro, A. and Aird, J. et al. (2015) The NuSTAR Extragalactic Surveys: Initial Results and Catalog from the Extended Chandra Deep Field South. Astrophysical Journal, 808 (2). Art. No. 184. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150907-151739240

Brightman, M. and Baloković, M. and Stern, D. et al. (2015) Determining the Covering Factor of Compton-thick Active Galactic Nuclei with NuSTAR. Astrophysical Journal, 805 (1). Art. No. 41. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150619-091157800

Bachetti, Matteo and Harrison, Fiona A. and Cook, Rick et al. (2015) No Time for Dead Time: Timing analysis of bright black hole binaries with NuSTAR. Astrophysical Journal, 800 (2). Art. No. 109. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20141211-085027843

Marinucci, A. and Matt, G. and Bianchi, S. et al. (2015) The Seyfert 2 galaxy NGC 2110: hard X-ray emission observed by NuSTAR and variability of the iron Kα line. Monthly Notices of the Royal Astronomical Society, 447 (1). pp. 160-167. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20150403-083343981

Ivanov, V. D. and Vaisanen, P. and Kniazev, A. Y. et al. (2015) Properties of the solar neighbor WISE J072003.20−084651.2. Astronomy and Astrophysics, 574 . Art. No. A64. ISSN 0004-6361. https://resolver.caltech.edu/CaltechAUTHORS:20150529-101522107

2014

Ballantyne, D. R. and Bollenbacher, J. M. and Brenneman, L. W. et al. (2014) NuSTAR Reveals the Comptonizing Corona of the Broad-line Radio Galaxy 3C 382. Astrophysical Journal, 794 (1). Art. No. 62. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20141106-132347774

Luo, B. and Brandt, W. N. and Alexander, D. M. et al. (2014) Weak Hard X-Ray Emission from Broad Absorption Line Quasars: Evidence for Intrinsic X-Ray Weakness. Astrophysical Journal, 794 (1). Art. No. 70. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20141106-132623873

Stern, Daniel and Lansbury, G. B. and Assef, R. J. et al. (2014) NuSTAR and XMM-Newton Observations of Luminous, Heavily Obscured, WISE-selected Quasars at z ~ 2. Astrophysical Journal, 79 (2). Art No.102. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20160824-144504856

Puccetti, Simonetta and Comastri, Andrea and Fiore, Fabrizio et al. (2014) The Variable Hard X-Ray Emission of NGC 4945 as Observed by NuSTAR. Astrophysical Journal, 793 (1). Art. No. 26. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20141003-074456235

Gandhi, P. and Baloković, M. and Harrison, F. A. et al. (2014) NuSTAR Unveils a Compton-thick Type 2 Quasar in Mrk 34. Astrophysical Journal, 792 (2). Art. No. 117. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20140925-140514974

Younes, G. and Kouveliotou, C. and Grefenstette, B. W. et al. (2014) Simultaneous NuSTAR/Chandra Observations of the Bursting Pulsar GRO J1744-28 during Its Third Reactivation. Astrophysical Journal, 804 (1). Art. No. 43. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150605-135807207

Matt, G. and Baloković, M. and Marinucci, A. et al. (2014) The hard X-ray spectrum of NGC 5506 as seen by NuSTAR. Monthly Notices of the Royal Astronomical Society, 447 (4). pp. 3029-3033. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20150404-122323766

2011

Gandhi, P. and Blain, A. W. and Russell, D. M. et al. (2011) A Variable Mid-infrared Synchrotron Break Associated with the Compact Jet in GX 339-4. Astrophysical Journal Letters, 740 (1). Art. No. L13. ISSN 2041-8205. https://resolver.caltech.edu/CaltechAUTHORS:20111017-103710883

This list was generated on Thu Oct 17 17:17:46 2019 PDT.