Search Results - "Kochanek, Christopher S."

Photometry of Saturated Stars with Neural Networks by Winecki, Dominik, Kochanek, Christopher S.

“…Abstract We use a multilevel perceptron (MLP) neural network to obtain photometry of saturated stars in the All-Sky Automated Survey for Supernovae (ASAS-SN)…”
Get full text

A noninteracting low-mass black hole-giant star binary system by Thompson, Todd A, Kochanek, Christopher S, Stanek, Krzysztof Z, Badenes, Carles, Post, Richard S, Jayasinghe, Tharindu, Latham, David W, Bieryla, Allyson, Esquerdo, Gilbert A, Berlind, Perry, Calkins, Michael L, Tayar, Jamie, Lindegren, Lennart, Johnson, Jennifer A, Holoien, Thomas W-S, Auchettl, Katie, Covey, Kevin

“…Black hole binary systems with companion stars are typically found via their x-ray emission, generated by interaction and accretion. Noninteracting binaries…”
Get full text

The Search for Failed Supernovae with the Large Binocular Telescope: The Mid-infrared Counterpart to N6946-BH1 by Kochanek, Christopher S., Neustadt, Jack M. M., Stanek, Krzysztof Z.

“…Abstract We present JWST MIRI 5.6, 10, and 21 μ m observations of the candidate failed supernova N6946-BH1 along with Hubble Space Telescope (HST) WFPC/IR 1.1…”
Get full text

THE BOSS EMISSION-LINE LENS SURVEY. IV. SMOOTH LENS MODELS FOR THE BELLS GALLERY SAMPLE by Shu, Yiping, Bolton, Adam S., Mao, Shude, Kochanek, Christopher S., Pérez-Fournon, Ismael, Oguri, Masamune, Montero-Dorta, Antonio D., Cornachione, Matthew A., Marques-Chaves, Rui, Zheng, Zheng, Brownstein, Joel R., Ménard, Brice

“…ABSTRACT We present Hubble Space Telescope F606W-band imaging observations of 21 galaxy-Ly α emitter lens candidates in the Baryon Oscillation Spectroscopic…”
Get full text

X-Ray and Optical Microlensing in the Lensed Quasar PG 1115+080 by Morgan, Christopher W, Kochanek, Christopher. S, Dai, Xinyu, Morgan, Nicholas D, Falco, Emilio E

“…We analyzed the microlensing of the X-ray and optical emission of the lensed quasar PG 1115+080. We find that the effective radius of the X-ray emission is…”
Get full text

Accretion Disk Size Measurement and Time Delays in the Lensed Quasar WFI 2033-4723 by Morgan, Christopher W., Hyer, Gregory E., Bonvin, Vivien, Mosquera, Ana M., Cornachione, Matthew, Courbin, Frederic, Kochanek, Christopher S., Falco, Emilio E.

“…We present 13 seasons of R-band photometry of the quadruply lensed quasar WFI 2033-4723 from the 1.3 m SMARTS telescope at CTIO and the 1.2 m Euler Swiss…”
Get full text

The LBT satellites of Nearby Galaxies Survey (LBT-SONG): the satellite population of NGC 628 by Davis, A Bianca, Nierenberg, Anna M, Peter, Annika H G, Garling, Christopher T, Greco, Johnny P, Kochanek, Christopher S, Utomo, Dyas, Casey, Kirsten J, Pogge, Richard W, Roberts, Daniella M, Sand, David J, Sardone, Amy

“…ABSTRACT We present the first satellite system of the Large Binocular Telescope Satellites Of Nearby Galaxies Survey (LBT-SONG), a survey to characterize the…”
Get full text

The BOSS Emission-Line Lens Survey (BELLS). I. A Large Spectroscopically Selected Sample of Lens Galaxies at Redshift ~0.5 by Brownstein, Joel R, Bolton, Adam S, Schlegel, David J, Eisenstein, Daniel J, Kochanek, Christopher S, Connolly, Natalia, Maraston, Claudia, Pandey, Parul, Seitz, Stella, Wake, David A, Wood-Vasey, W. Michael, Brinkmann, Jon, Schneider, Donald P, Weaver, Benjamin A

“…We present a catalog of 25 definite and 11 probable strong galaxy-galaxy gravitational lens systems with lens redshifts 0.4 z 0.7, discovered spectroscopically…”
Get full text

Chandra, HST/STIS, NICER, Swift, and TESS Detail the Flare Evolution of the Repeating Nuclear Transient ASASSN -14ko by Payne, Anna V., Auchettl, Katie, Shappee, Benjamin J., Kochanek, Christopher S., Boyd, Patricia T., Holoien, Thomas W.-S., Fausnaugh, Michael M., Ashall, Chris, Hinkle, Jason T., Vallely, Patrick J., Stanek, K. Z., Thompson, Todd A.

“…Abstract ASASSN-14ko is a nuclear transient at the center of the AGN ESO 253−G003 that undergoes periodic flares. Optical flares were first observed in 2014 by…”
Get full text

A Survey About Nothing: Monitoring a Million Supergiants for Failed Supernovae by Kochanek, Christopher S, Beacom, John F, Kistler, Matthew D, Prieto, José L, Stanek, Krzysztof Z, Thompson, Todd A, Yüksel, Hasan

“…Extragalactic transient searches have historically been limited to looking for the appearance of new sources such as supernovae. It is now possible to carry…”
Get full text

The X-Ray and Mid-infrared Luminosities in Luminous Type 1 Quasars by Chen(陳建廷), Chien-Ting J., Hickox, Ryan C., Goulding, Andrew D., Stern, Daniel, Assef, Roberto, Kochanek, Christopher S., Brown, Michael J. I., Harrison, Chris M., Hainline, Kevin N., Alberts, Stacey, Alexander, David M., Brodwin, Mark, Moro, Agnese Del, Forman, William R., Gorjian, Varoujan, Jones, Christine, Murray, Stephen S., Pope, Alexandra, Rovilos, Emmanouel

“…Several recent studies have reported different intrinsic correlations between the active galactic nucleus (AGN) mid-IR luminosity ( ) and the rest-frame 2-10…”
Get full text

Near-infrared background anisotropies from diffuse intrahalo light of galaxies by Cooray, Asantha, Smidt, Joseph, De Bernardis, Francesco, Gong, Yan, Stern, Daniel, Ashby, Matthew L. N., Eisenhardt, Peter R., Frazer, Christopher C., Gonzalez, Anthony H., Kochanek, Christopher S., Kozłowski, Szymon, Wright, Edward L.

“…Measurements of the anisotropy power spectrum of the cosmic near-infrared background radiation show the clustering amplitude to be larger than existing model…”
Get full text

A Metallicity Dependence on the Occurrence of Core-collapse Supernovae by Pessi, Thallis, Anderson, Joseph P., Lyman, Joseph D., Prieto, Jose L., Galbany, Lluís, Kochanek, Christopher S., Sánchez, Sebastian F., Kuncarayakti, Hanindyo

“…Abstract Core-collapse supernovae (CCSNe) are widely accepted to be caused by the explosive death of massive stars with initial masses ≳8 M ⊙ . There is,…”
Get full text

Response to Comment on "A noninteracting low-mass black hole-giant star binary system" by Thompson, Todd A, Kochanek, Christopher S, Stanek, Krzysztof Z, Badenes, Carles, Jayasinghe, Tharindu, Tayar, Jamie, Johnson, Jennifer A, Holoien, Thomas W-S, Auchettl, Katie, Covey, Kevin

“…Van den Heuvel and Tauris argue that if the red giant star in the system 2MASS J05215658+4359220 has a mass of 1 solar mass ( ), then its unseen companion…”
Get full text

The Changing-look Blazar B2 1420+32 by Mishra, Hora D., Dai, Xinyu, Chen, Ping, Cheng, Jigui, Jayasinghe, T., Tucker, Michael A., Vallely, Patrick J., Bersier, David, Bose, Subhash, Do, Aaron, Dong, Subo, Holoien, Thomas W.-S., Huber, Mark E., Kochanek, Christopher S., Liang, Enwei, Payne, Anna V., Prieto, Jose, Shappee, Benjamin J., Stanek, K. Z., Bhatiani, Saloni, Cox, John, DeFrancesco, Cora, Shen, Zhiqiang, Thompson, Todd A., Wang, Junfeng

“…Abstract Blazars are active galactic nuclei with their relativistic jets pointing toward the observer, comprising two major subclasses, flat-spectrum radio…”
Get full text

Probing the Coevolution of Supermassive Black Holes and Galaxies Using Gravitationally Lensed Quasar Hosts by Peng, Chien Y, Impey, Chris D, Rix, Hans-Walter, Kochanek, Christopher S, Keeton, Charles R, Falco, Emilio E, Lehár, Joseph, McLeod, Brian A

“…In the present-day universe, supermassive black hole masses (M sub(BH)) appear to be strongly correlated with their galaxy's bulge luminosity, among other…”
Get full text

THE IMPACT OF METALLICITY ON THE RATE OF TYPE Ia SUPERNOVAE by Kistler, Matthew D, Stanek, K Z, Kochanek, Christopher S, Prieto, Jose L, Thompson, Todd A

“…The metallicity of a star strongly affects both its evolution and the properties of the stellar remnant that results from its demise. It is generally accepted…”
Get full text

The Hidden Fortress: structure and substructure of the complex strong lensing cluster SDSS J1029+2623 by Oguri, Masamune, Schrabback, Tim, Jullo, Eric, Ota, Naomi, Kochanek, Christopher S., Dai, Xinyu, Ofek, Eran O., Richards, Gordon T., Blandford, Roger D., Falco, Emilio E., Fohlmeister, Janine

“…We present Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) and Wide Field Camera 3 (WFC3) observations of SDSS J1029+2623, a three-image quasar…”
Get full text

Detection of a Companion Lens Galaxy Using the Mid-Infrared Flux Ratios of the Gravitationally Lensed Quasar H1413+117 by MacLeod, Chelsea L, Kochanek, Christopher S, Agol, Eric

Get full text

THE GALAXY OPTICAL LUMINOSITY FUNCTION FROM THE AGN AND GALAXY EVOLUTION SURVEY by COOL, Richard J, EISENSTEIN, Daniel J, MOUSTAKAS, John, MURRAY, Stephen S, KOCHANEK, Christopher S, BROWN, Michael J. I, CALDWELL, Nelson, DEY, Arjun, FORMAN, William R, HICKOX, Ryan C, JANNUZI, Buell T, JONES, Christine

“…We present the galaxy optical luminosity function for the redshift range 0.05 < z < 0.75 from the AGN and Galaxy Evolution Survey, a spectroscopic survey of…”
Get full text