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  • Chandra Identification of 26 New Black Hole Candidates in the Central Region of M31 
    Barnard, R.; Garcia, M. R.; Murray, Stephen S. (2013)
    We have previously identified 10 M31 black hole candidates (BHCs) in M31 from their X-ray properties alone. They exhibit "hard state" emission spectra that are seen at luminosities lsim10% Eddington in X-ray ...
  • Chandra Imaging of the Western Hotspot in the Radio Galaxy Pictor A: Image Deconvolution and Variability Analysis 
    Thimmappa, R.; Stawarz, L.; Marchenko, V.; Balasubramaniam, K.; Cheung, C. C.; Siemiginowska, Aneta (2020)
    Here we present an analysis of the X-ray morphology and flux variability of the particularly bright and extended western hotspot in the nearest powerful (FR II-type) radio galaxy, Pictor A, based on data obtained with the ...
  • The Chandra Local Volume Survey. I. The X-Ray Point Source Populations of NGC 55, NGC 2403, and NGC 4214 
    Binder, B.; Williams, B. F.; Eracleous, M.; Plucinsky, Paul P.; Gaetz, T. J.; Anderson, S. F.; Skillman, E. D.; Dalcanton, J. J.; Kong, A. K. H.; Weisz, D. R. (2015)
    We present comprehensive X-ray point source catalogs of NGC 55, NGC 2403, and NGC 4214 as part of the Chandra Local Volume Survey. The combined archival observations have effective exposure times of 56.5 ks, 190 ks, and ...
  • The Chandra Local Volume Survey: The X-Ray Point-source Catalog of NGC 300 
    Binder, B.; Williams, B. F.; Eracleous, M.; Gaetz, T. J.; Plucinsky, Paul P.; Skillman, E. D.; Dalcanton, J. J.; Anderson, S. F.; Weisz, D. R.; Kong, A. K. H. (2012)
    We present the source catalog of a new Chandra ACIS-I observation of NGC 300 obtained as part of the Chandra Local Volume Survey. Our 63 ks exposure covers ~88% of the D <SUB>25</SUB> isophote (R ? 6.3 kpc) and yields a ...
  • The Chandra Local Volume Survey: The X-Ray Point-source Population of NGC 404 
    Binder, B.; Williams, B. F.; Eracleous, M.; Gaetz, T. J.; Kong, A. K. H.; Skillman, E. D.; Weisz, D. R. (2013)
    We present a comprehensive X-ray point-source catalog of NGC 404 obtained as part of the Chandra Local Volume Survey. A new 97 ks Chandra ACIS-S observation of NGC 404 was combined with archival observations for a total ...
  • Chandra measurements of a complete sample of X-ray luminous galaxy clusters: the luminosity-mass relation 
    Giles, P. A.; Maughan, B. J.; Dahle, H.; Bonamente, M.; Landry, D.; Jones, C.; Joy, M.; Murray, Stephen S.; van der Pyl, N. (2017)
    We present the results of work involving a statistically complete sample of 34 galaxy clusters, in the redshift range 0.15 <= z <= 0.3 observed with Chandra. We investigate the luminosity-mass (LM) relation for the cluster ...
  • Chandra monitoring of the candidate anomalous X-ray pulsar AX J1845.0-0258 
    Tam, Cindy R.; Kaspi, Victoria M.; Gaensler, Bryan M.; Gotthelf, Eric V. (2007)
    The population of clearly identified anomalous X-ray pulsars has recently grown to seven, however, one candidate anomalous X-ray pulsar (AXP) still eludes re-confirmation. Here, we present a set of seven Chandra ACIS-S ...
  • Chandra monitoring of UGC 4203: the structure of the X-ray absorber 
    Risaliti, Guido; Elvis, Martin; Bianchi, S.; Matt, G. (2010)
    ABSTRACT We present a Chandra monitoring campaign of the highly variable Seyfert galaxy UGC 4203 (the `Phoenix Galaxy&#39;) which revealed variations in the X-ray absorbing column density on time-scales of 2 weeks. This ...
  • The Chandra Multi-wavelength Project: Optical Spectroscopy and the Broadband Spectral Energy Distributions of X-Ray-selected AGNs 
    Trichas, Markos; Green, Paul J.; Silverman, John D.; Aldcroft, Thomas L.; Barkhouse, Wayne; Cameron, Robert A.; Constantin, Anca; Ellison, Sara L.; Foltz, Craig; Haggard, Daryl; Jannuzi, Buell T.; Kim, Dong-Woo; Marshall, Herman L.; Mossman, Amy; Pérez, Laura M.; Romero-Colmenero, Encarni; Ruiz, Angel; Smith, Malcolm G.; Smith, Paul S.; Torres, Guillermo; Wik, Daniel R.; Wilkes, Belinda J.; Wolfgang, Angie (2012)
    From optical spectroscopy of X-ray sources observed as part of the Chandra Multi-wavelength Project (ChaMP), we present redshifts and classifications for a total of 1569 Chandra sources from our targeted spectroscopic ...
  • Chandra Observation of Abell 1142: A Cool-core Cluster Lacking a Central Brightest Cluster Galaxy? 
    Su, Yuanyuan; Buote, David A.; Gastaldello, Fabio; van Weeren, Reinout (2016)
    Abell 1142 is a low-mass galaxy cluster at low redshift containing two comparable brightest cluster galaxies (BCGs) resembling a scaled-down version of the Coma Cluster. Our Chandra analysis reveals an X-ray emission peak, ...
  • Chandra Observation of Polaris: Census of Low-mass Companions 
    Evans, Nancy Remage; Guinan, Edward; Engle, Scott; Wolk, Scott J.; Schlegel, Eric; Mason, Brian D.; Karovska, Margarita; Spitzbart, Bradley (2010)
    We have observed Cepheid Polaris (? UMi A: F7 Ib [Aa] + F6 V [Ab]) with Chandra ACIS-I for 10 ks. An X-ray source was found at the location
  • A Chandra Observation of Supernova Remnant G350.1 0.3 and Its Central Compact Object 
    Lovchinsky, I.; Slane, P.; Gaensler, B. M.; Hughes, J. P.; Ng, C. Y.; Lazendic, J. S.; Gelfand, J. D.; Brogan, C. L. (2011)
    We present a new Chandra observation of supernova remnant (SNR) G350.1 0.3. The high-resolution X-ray data reveal previously unresolved filamentary structures and allow us to perform detailed spectroscopy in the diffuse ...
  • Chandra observation of the Galactic supernova remnant CTB 109 (G109.1-1.0) 
    Sasaki, M.; Plucinsky, Paul P.; Gaetz, T. J.; Bocchino, F. (2013)
    Context. We study the X-ray emission of the Galactic supernova remnant (SNR) CTB 109 (G109.1-1.0), which is well-known for its enigmatic half-shell morphology both in radio and in X-rays and is associated with the anomalous ...
  • The Chandra Observational Ontology: Tying the Threads Together 
    Winkelman, S.; Rots, Arnold H.; Ballester, P.; Egret, D.; Lorente, N. P. F. (2012)
    The Chandra Data Archive (CDA) has been providing links between data and astronomical publications to the Astrophysics Data System (ADS) for many years as part of our maintaining of the Chandra Bibliography. In the past ...
  • Chandra Observations of 3C Radio Sources with z &lt; 0.3: Nuclei, Diffuse Emission, Jets, and Hotspots 
    Massaro, Francesco; Harris, D. E.; Tremblay, Grant R.; Axon, D.; Baum, S. A.; Capetti, A.; Chiaberge, M.; Gilli, R.; Giovannini, G.; Grandi, P.; Macchetto, F. D.; O'Dea, C. P.; Risaliti, Guido; Sparks, W. (2010)
    We report on our Chandra Cycle 9 program to observe half of the 60 (unobserved by Chandra) 3C radio sources at z <SUP>22</SUP> cm<SUP>-2</SUP> for one-third of our sources.
  • Chandra Observations of 3C Radio Sources with z < 0.3. II. Completing the Snapshot Survey 
    Massaro, Francesco; Tremblay, Grant R.; Harris, D. E.; Kharb, P.; Axon, D.; Balmaverde, B.; Baum, S. A.; Capetti, A.; Chiaberge, M.; Gilli, R.; Giovannini, G.; Grandi, P.; Macchetto, F. D.; O'Dea, C. P.; Risaliti, G.; Sparks, W.; Torresi, E. (2012)
    We report on the second round of Chandra observations of the 3C snapshot survey developed to observe the complete sample of 3C radio sources with z < 0.3 for 8 ks each. In the first paper, we illustrated the basic data ...
  • Chandra observations of Comet 9P/Tempel 1 during the Deep Impact campaign 
    Lisse, C. M.; Dennerl, K.; Christian, D. J.; Wolk, S. J.; Bodewits, D.; Zurbuchen, T. H.; Hansen, K. C.; Hoekstra, R.; Combi, M.; Fry, C. D.; Dryer, M.; Mäkinen, T.; Sun, W. (2007)
  • Chandra Observations of Comets 8p/Tuttle and 17p/Holmes During Solar Minimum 
    Christian, D. J.; Bodewits, D.; Lisse, C. M.; Dennerl, K.; Wolk, S. J.; Hsieh, H.; Zurbuchen, T. H.; Zhao, L. (2010)
    We present results for Chandra X-ray Observatory observations of two comets made during the minimum of solar cycle 24. The two comets, 17P/Holmes (17P) and 8P/Tuttle (8P), were very different in their activity and geometry. ...
  • Chandra Observations of Comets C/2012 S1 (ISON) and C/2011 L4 (PanSTARRS) 
    Snios, Bradford; Kharchenko, Vasili; Lisse, Carey M.; Wolk, Scott J.; Dennerl, Konrad; Combi, Michael R. (2016)
    We present our results on the Chandra X-ray Observatory Advanced CCD Imaging Spectrometer (ACIS) observations of the bright Oort Cloud comets C/2012 S1 (ISON) and C/2011 L4 (PanSTARRS). ISON was observed between 2013 October ...
  • Chandra Observations of High-energy X-Ray Sources Discovered by INTEGRAL 
    Tomsick, John A.; Bodaghee, Arash; Chaty, Sylvain; Clavel, Maïca; Fornasini, Francesca M.; Hare, Jeremy; Krivonos, Roman; Rahoui, Farid; Rodriguez, Jerome (2020)
    The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) satellite has detected in excess of 1000 sources in the ~20-100 keV band during its surveys of the sky over the past 17 years. We obtained 5 ks observations ...

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