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Multi-messenger Observations of a Binary Neutron Star Merger
On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced…
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Significant and variable linear polarization during the prompt optical flash of GRB 160625B
TLDR
The authors' measurements probe the structure of the magnetic field at an early stage of the jet, closer to its central black hole, and show that the prompt phase is produced via fast-cooling synchrotron radiation in a large-scale magnetic field that is advected from the black hole and distorted by dissipation processes within the jet.
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Master Robotic Net
TLDR
A unique fast sky survey with all sky observed over a single night down to a limiting magnitude of 19-20 will make it possible to address a number of fundamental problems: search for dark energy via the discovery and photometry of supernovae, search for exoplanets, microlensing effects, discovery of minor bodies in the Solar System, and space-junk monitoring.
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Accurate seeing measurements with MASS and DIMM
Astronomical seeing is quantified by a single parameter, the turbulence integral, in the framework of the Kolmogorov turbulence model. This parameter can be routinely measured by a Differential Image…
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MASTER Optical Detection of the First LIGO/Virgo Neutron Star Binary Merger GW170817
Following the discovery of the gravitational-wave source GW170817 by three Laser Interferometer Gravitational-wave Observatory (LIGO)/Virgo antennae (Abbott et al., 2017a), the MASTER Global Robotic…
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Study on Atmospheric Optical Turbulence above Mount Shatdzhatmaz in 2007–2013
We present the results of the atmospheric optical turbulence (OT) measurements performed atop Mount Shatdzhatmaz at the installation site of new 2.5 m telescope of the Sternberg Astronomical…
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Combined MASS-DIMM instruments for atmospheric turbulence studies
Several site-testing programs and observatories currently use combined MASS-DIMM instruments for monitoring parameters of optical turbulence. The instrument is described here. After a short recall of…
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MASS: a monitor of the vertical turbulence distribution
The MASS (Multi-Aperture Scintillation Sensor) instrument consists of a 14-cm off-axis reflecting telescope and a detector unit which measures the scintillations of single stars in four concentric…
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The MASTER-II network of robotic optical telescopes. First results
The main stages in the creation of the Russian segment of the MASTER network of robotic telescopes is described. This network is designed for studies of the prompt optical emission of gammaray bursts…
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Comparison of the scintillation noise above different observatories measured with MASS instruments
Aims. Scintillation noise is a major limitation of ground-based photometric precision. Methods. An extensive dataset of stellar scintillation collected at 11 astronomical sites world-wide with…
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