I. Manulis
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View article: An isolated stellar-mass black hole detected through astrometric microlensing
An isolated stellar-mass black hole detected through astrometric microlensing Open
We report the first unambiguous detection and mass measurement of an isolated stellar-mass black hole (BH). We used the Hubble Space Telescope (HST) to carry out precise astrometry of the source star of the long-duration (tE ≃ 270 days), h…
View article: Physical properties of the trans-Neptunian object (38628) Huya from a multi-chord stellar occultation
Physical properties of the trans-Neptunian object (38628) Huya from a multi-chord stellar occultation Open
Context. As part of our international program aimed at obtaining accurate physical properties of trans-Neptunian objects (TNOs), we predicted a stellar occultation by the TNO (38628) Huya of the star Gaia DR2 4352760586390566400 ( m G = 11…
A high-rate foreground of sub-second flares from geosynchronous satellites Open
The Weizmann Fast Astronomical Survey Telescope is a 55 cm optical survey telescope with a high-cadence (25 Hz) monitoring of the sky over a wide field of view (≈7 deg2). The high frame rate allows detection of sub-second transients over m…
PTF11rka: an interacting supernova at the crossroads of stripped-envelope and H-poor superluminous stellar core collapses Open
The hydrogen-poor supernova (SN) PTF11rka (z = 0.0744), reported by the Palomar Transient Factory, was observed with various telescopes starting a few days after the estimated explosion time of 2011 December 5 UT and up to 432 rest-frame d…
Did Simon Marius observe Jupiter's satellites on January 8, 1610? An exercise in computation Open
The question, Did Simon Marius (1573-1625) observe Jupiter's satellites on January 8, 1610 (December 29, 1609 in the Julian calendar) is moot, for he did not disclose his research method and the instrument he used. To resolve this issue we…
The Trans-Neptunian Object (84922) 2003 VS<sub>2</sub> through Stellar Occultations Open
We present results from three world-wide campaigns that resulted in the detections of two single-chord and one multi-chord stellar occultations by the plutino object (84922) 2003 VS 2 . From the single-chord occultations in 2013 and 2014 w…
View article: Lower atmosphere and pressure evolution on Pluto from ground-based stellar occultations, 1988–2016
Lower atmosphere and pressure evolution on Pluto from ground-based stellar occultations, 1988–2016 Open
Context. The tenuous nitrogen (N 2 ) atmosphere on Pluto undergoes strong seasonal effects due to high obliquity and orbital eccentricity, and has recently (July 2015) been observed by the New Horizons spacecraft. Aims. The main goals of t…
A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary Open
Explosive origin of a binary neutron star Some types of core-collapse supernovae are known to produce a neutron star (NS). A binary NS merger was recently detected from its gravitational wave emission, but it is unclear how such a tight bi…
View article: Study of the Plutino Object (208996) 2003 AZ<sub>84</sub> from Stellar Occultations: Size, Shape, and Topographic Features
Study of the Plutino Object (208996) 2003 AZ<sub>84</sub> from Stellar Occultations: Size, Shape, and Topographic Features Open
We present results derived from four stellar occultations by the plutino object (208996) 2003 AZ 84 , detected on 2011 January 8 (single-chord event), 2012 February 3 (multi-chord), 2013 December 2 (single-chord), and 2014 November 15 (mul…
Common envelope ejection for a luminous red nova in M101 Open
We present the results of optical, near-infrared, and mid-infrared observations of M101 OT2015-1 (PSN J14021678+5426205), a luminous red transient in the Pinwheel galaxy (M101), spanning a total of 16 years. The light curve showed two dist…
View article: 2003 AZ84: Size, shape, albedo and first detection of topographic features
2003 AZ84: Size, shape, albedo and first detection of topographic features Open
International audience
TYPE II SUPERNOVA ENERGETICS AND COMPARISON OF LIGHT CURVES TO SHOCK-COOLING MODELS Open
During the first few days after explosion, Type II supernovae (SNe) are dominated by relatively simple physics. Theoretical predictions regarding early-time SN light curves in the ultraviolet (UV) and optical bands are thus quite robust. W…
FLASH SPECTROSCOPY: EMISSION LINES FROM THE IONIZED CIRCUMSTELLAR MATERIAL AROUND <10-DAY-OLD TYPE II SUPERNOVAE Open
Supernovae (SNe) embedded in dense circumstellar material (CSM) may show prominent emission lines in their early-time spectra (≤10 days after the explosion), owing to recombination of the CSM ionized by the shock-breakout flash. From such …