Search Results - "Kochanek, C. S."

Overconstrained gravitational lens models and the Hubble constant by Kochanek, C S

“…ABSTRACT It is well known that measurements of H0 from gravitational lens time delays scale as H0 ∝ 1 − κE, where κE is the mean convergence at the Einstein…”
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The physics of flash (supernova) spectroscopy by Kochanek, C S

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On the red supergiant problem by Kochanek, C S

“…ABSTRACT We examine the problem of estimating the mass range corresponding to the observed red supergiant (RSG) progenitors of Type IIP supernovae. Using Monte…”
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Constraints on core collapse from the black hole mass function by Kochanek, C. S.

“…We model the observed black hole mass function under the assumption that black hole formation is controlled by the compactness of the stellar core at the time…”
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IS QUASAR OPTICAL VARIABILITY A DAMPED RANDOM WALK? by Zu, Ying, Kochanek, C S, Kozlowski, Szymon, Udalski, Andrzej

“…The damped random walk (DRW) model is increasingly used to model the variability in quasar optical light curves, but it is still uncertain whether the DRW…”
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The Astrophysical Implications of Dust Formation during the Eruptions of Hot, Massive Stars by Kochanek, C. S

“…Dust formation in the winds of hot stars is inextricably linked to the classic eruptive state of luminous blue variables because it requires very high…”
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FAILED SUPERNOVAE EXPLAIN THE COMPACT REMNANT MASS FUNCTION by Kochanek, C S

“…One explanation for the absence of higher mass red supergiants (16.5 M sub([middot in circle]) [lap] M [lap] 25 M sub([middot in circle])) as the progenitors…”
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The Quasar Accretion Disk Size-Black Hole Mass Relation by Morgan, Christopher W, Kochanek, C. S, Morgan, Nicholas D, Falco, Emilio E

“…We use the microlensing variability observed for 11 gravitationally lensed quasars to show that the accretion disk size at a rest-frame wavelength of 2500 A is…”
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Quantitative Interpretation of Quasar Microlensing Light Curves by Kochanek, C. S

“…We develop a general method for analyzing the light curves of microlensed quasars and apply it to the OGLE light curves of the four-image lens Q2237+0305. We…”
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ON ABSORPTION BY CIRCUMSTELLAR DUST, WITH THE PROGENITOR OF SN 2012aw AS A CASE STUDY by KOCHANEK, C. S, KHAN, R, DAI, X

“…ABSTRACT We use the progenitor of SN 2012aw to illustrate the consequences of modeling circumstellar dust using Galactic (interstellar) extinction laws that…”
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THE MICROLENSING PROPERTIES OF A SAMPLE OF 87 LENSED QUASARS by MOSQUERA, A. M, KOCHANEK, C. S

“…Gravitational microlensing is a powerful tool for probing the physical properties of quasar accretion disks and properties of the lens galaxy such as its dark…”
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Whimper of a Bang: Documenting the Final Days of the Nearby Type Ia Supernova 2011fe by Shappee, B. J., Stanek, K. Z., Kochanek, C. S., Garnavich, P. M.

“…Using the Hubble Space Telescope (HST) and the Large Binocular Telescope, we followed the evolution of the Type Ia supernova (SN Ia) 2011fe for an…”
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The Distance to the S147 Supernova Remnant by Kochanek, C. S., Raymond, John C., Caldwell, Nelson

“…In the absence of a parallax distance to a pulsar or a surviving binary in a supernova remnant (SNR), distances to Galactic SNRs are generally very uncertain…”
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APPLICATION OF STOCHASTIC MODELING TO ANALYSIS OF PHOTOMETRIC REVERBERATION MAPPING DATA by Zu, Ying, Kochanek, C. S., Koz owski, Szymon, Peterson, B. M.

“…ABSTRACT We use both simulated and real quasar light curves to explore modeling photometric reverberation-mapping (RM) data as a stochastic process. We do this…”
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The Sizes of the X-ray and Optical Emission Regions of RXJ 1131-1231 by Dai, X, Kochanek, C. S, Chartas, G, Kozłowski, S, Morgan, C. W, Garmire, G, Agol, E

“…We use gravitational microlensing of the four images of the z = 0.658 quasar RXJ 1131-1231 to measure the sizes of the optical and X-ray emission regions of…”
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Six months of multiwavelength follow-up of the tidal disruption candidate ASASSN-14li and implied TDE rates from ASAS-SN by Holoien, T W-S, Kochanek, C S, Prieto, J L, Stanek, K Z, Dong, Subo, Shappee, B J, Grupe, D, Brown, J S, Basu, U, Beacom, J F, Bersier, D, Brimacombe, J, Danilet, A B, Falco, E, Guo, Z, Jose, J, Herczeg, G J, Long, F, Pojmanski, G, Simonian, G V, Szczygiel, D M, Thompson, T A, Thorstensen, J R, Wagner, R M, Wozniak, P R

“…We present ground-based and Swift photometric and spectroscopic observations of the candidate tidal disruption event (TDE) ASASSN-14li, found at the centre of…”
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Discovery and follow-up of ASASSN-19dj: an X-ray and UV luminous TDE in an extreme post-starburst galaxy by Hinkle, Jason T, Holoien, T W-S, Auchettl, K, Shappee, B J, Neustadt, J M M, Payne, A V, Brown, J S, Kochanek, C S, Stanek, K Z, Graham, M J, Tucker, M A, Do, A, Anderson, J P, Bose, S, Chen, P, Coulter, D A, Dimitriadis, G, Dong, Subo, Foley, R J, Huber, M E, Hung, T, Kilpatrick, C D, Pignata, G, Piro, A L, Rojas-Bravo, C, Siebert, M R, Stalder, B, Thompson, Todd A, Tonry, J L, Vallely, P J, Wisniewski, J P

“…ABSTRACT We present observations of ASASSN-19dj, a nearby tidal disruption event (TDE) discovered in the post-starburst galaxy KUG 0810+227 by the All-Sky…”
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THE STRUCTURE OF THE X-RAY AND OPTICAL EMITTING REGIONS OF THE LENSED QUASAR Q 2237+0305 by Mosquera, A M, Kochanek, C S, Chen, B, Dai, X, Blackburne, J A, Chartas, G

“…(ProQuest: ... denotes formulae and/or non-USASCII text omitted) We use gravitational microlensing to determine the size of the X-ray and optical emission…”
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Direct Detection of Cold Dark Matter Substructure by Dalal, N, Kochanek, C. S

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X-Ray Microlensing in RXJ1131-1231 and HE1104-1805 by Chartas, G, Kochanek, C. S, Dai, X, Poindexter, S, Garmire, G

“…We present results from a monitoring campaign performed with the Chandra X-ray Observatory of the gravitationally lensed quasars RX J1131-1231 and HE…”
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