359 citations · 1.5k across the 16 of their papers we have counts for
16 papers
Visual Analysis and Demographics of Kepler Transit Timing Variations
Mackenzie Kane, Darin Ragozzine, Xzavier Flowers +3
We visually analyzed the Transit Timing Variation (TTV) data of 5930 Kepler Objects of Interest (KOIs) homogeneously. Using data from Rowe et al. 2014 and Holczer et al. 2016, we i…
Transit Timing Observations from Kepler. IX. Catalog of the Full Long-Cadence Data Set
Tomer Holczer, Tsevi Mazeh, Gil Nachmani +6
We present a new transit timing catalog of 2599 Kepler Objects of Interest (=KOIs), using the PDC-MAP long-cadence light curves that include the full seventeen quarters of the miss…
The thermal instability of the warm absorber in NGC 3783
R. W. Goosmann, T. Holczer, M. Mouchet +5
We model the observed X-ray spectral continuum shape, ionic column densities, and absorption measure distribution (AMD) of the warm absorber in the Seyfert galaxy NGC 3783. We assu…
Dearth of short-period Neptunian exoplanets - a desert in period-mass and period-radius planes
Tsevi Mazeh, Tomer Holczer, Simchon Faigler
A few studies have reported a significant dearth of exoplanets with Neptune mass and radius with orbital periods below -- d. This cannot be explained by observational biases…
Secure TTV Mass Measurements: Ten Kepler Exoplanets between 3 and 8 Earth Masses with Diverse Densities and Incident Fluxes
Daniel Jontof-Hutter, Eric B. Ford, Jason F. Rowe +7
We infer dynamical masses in eight multi-planet systems using transit times measured from Kepler's complete dataset, including short-cadence data where available. Of the eighteen d…
Time variation of Kepler transits induced by stellar spots - a way to distinguish between prograde and retrograde motion. II. Application to KOIs
Tomer Holczer, Avi Shporer, Tsevi Mazeh +8
Mazeh, Holczer, and Shporer (2015) have presented an approach that can, in principle, use the derived transit timing variation (TTV) of some transiting planets observed by the $Kep…
Radiation Pressure Confinement -- III. The origin of the broad ionization distribution in AGN outflows
Jonathan Stern, Ehud Behar, Ari Laor +2
The winds of ionized gas driven by Active Galactic Nuclei (AGN) can be studied through absorption lines in their X-ray spectra. A recurring feature of these outflows is their broad…
Kepler423b: a half-Jupiter mass planet transiting a very old solar-like star
D. Gandolfi, H. Parviainen, H. J. Deeg +16
We report the spectroscopic confirmation of the Kepler object of interest KOI-183.01 (Kepler-423b), a half-Jupiter mass planet transiting an old solar-like star every 2.7 days. Our…
Time variation of Kepler transits induced by stellar rotating spots - a way to distinguish between prograde and retrograde motion I. Theory
Tsevi Mazeh, Tomer Holczer, Avi Shporer
Some transiting planets discovered by the Kepler mission display transit timing variations (TTVs) induced by stellar spots that rotate on the visible hemisphere of their parent sta…
Transit Timing Observations from Kepler. VIII Catalog of Transit Timing Measurements of the First Twelve Quarters
Tsevi Mazeh, Gil Nachmani, Tomer Holczer +13
Following Ford et al. (2011, 2012) and Steffen et al. (2012) we derived the transit timing of 1960 Kepler KOIs using the pre-search data conditioning (PDC) light curves of the firs…
X-Ray Absorption Analysis of NGC3516: Appearance of Fast Components with Increased Source Flux
Tomer Holczer, Ehud Behar
By analyzing the X-ray spectra of NGC 3516 from 2001 and 2006 obtained with the HETGS spectrometer on board the Chandra observatory, we find that the kinematic structure of the out…
X-Ray Absorption Analysis of MCG-6-30-15: Discerning Three Kinematic Systems
Tomer Holczer, Ehud Behar, Nahum Arav
By analyzing the X-ray spectrum of MCG-6-30-15 obtained with the HETG spectrometer on board the Chandra Observatory, we identify three kinematically distinct absorption systems; tw…
Absorption Measure Distribution of the Outflow in IRAS 13349+2438: Direct Observation of Thermal Instability?
Tomer Holczer, Ehud Behar, Shai Kaspi
We analyze the Chandra X-ray spectrum obtained with the HETGS grating spectrometer of IRAS 13349+2438, which has one of the richest absorption spectra of a quasar outflow. Absorpti…
The mass-energy budget of the ionised outflow in NGC 7469
A. J. Blustin, G. A. Kriss, T. Holczer +6
Although AGN feedback through ionised winds is of great importance in models of AGN/galaxy coevolution, the mass and energy output via these winds, even in the nearby universe, is…
Inner-shell Absorption Lines of Fe~VI-- Fe~XVI: A Many-body Perturbation Theory Approach
Ming F. Gu, Tomer Holczer, Ehud Behar +1
We provide improved atomic calculation of wavelengths, oscillator strengths, and autoionization rates relevant to the inner-shell transitions of Fe~VI--XVI, the so-called…
Is The Fe M-shell Absorber Part of The Outflow in Active Galactic Nuclei?
Tomer Holczer, Ehud Behar, Shai Kaspi
The X-ray emission of many active galactic nuclei (AGNs) is absorbed between 15 and 17 Angstrom by means of unresolved (inner-shell) transition arrays (UTAs) of Fe M-shell ions. Th…