A5102963842- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Molecular Spectroscopy and Structure
- Astronomy and Astrophysical Research
- Photonic and Optical Devices
- Galaxies: Formation, Evolution, Phenomena
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Satellite Communication Systems
- Atmospheric Ozone and Climate
- Particle Detector Development and Performance
- Radio Astronomy Observations and Technology
- Spectroscopy and Laser Applications
- International Science and Diplomacy
- CCD and CMOS Imaging Sensors
- Superconducting and THz Device Technology
- History and Developments in Astronomy
- Advanced Thermodynamic Systems and Engines
- Space exploration and regulation
- Advanced Combustion Engine Technologies
Saint Petersburg State Electrotechnical University
2020
Astronomy and Space
2018-2019
Netherlands Institute for Radio Astronomy
2018
SRON Netherlands Institute for Space Research
2009-2016
The gas-solid budget of carbon in protoplanetary disks is related to the composition cores and atmospheres planets forming them. key gas-phase carriers CO, C$^{0}$ C$^{+}$ can now be observed disks. abundance has not yet been well characterized, we aim obtain new constraints on [C]/[H] ratio a sample disks, get an overview strength [CI] warm CO emission. We carried out survey CO$\,6$--$5$ [CI]$\,1$--$0$ $2$--$1$ lines towards $37$ with APEX, supplemented it [CII] data from literature. are...
AIMS Our aim is to characterize the size, mass, density and temperature profiles of protostellar envelope HH~46 IRS 1 its surrounding cloud material as well effect outflow has on environment.METHODS The CHAMP+ LABOCA arrays APEX telescope, combined with lower frequency line receivers, are used obtain a large continuum map smaller heterodyne maps in various isotopologues CO HCO+. high-J lines (6--5 7--6) together [C I] 2--1, observed CHAMP+, probe warm molecular gas inner few hundred AU...
The disc around the Herbig Ae/Be star HD 100546 is one of most extensively studied discs in southern sky. Although there a wealth information about its dust content and composition, not much known gas large scale kinematics. We detect study molecular at spatial resolution from 7.7" to 18.9" using APEX telescope. lines 12CO J=7-6, J=6-5, J=3-2, 13CO J=3-2 [C I] 3P2-3P1 are observed, diagnostic temperature, size, chemistry, use parametric models that reproduce low-J emission Herbig~Ae stars...
Since the main cooling lines of gas phase are important tracers interstellar medium in Galactic and extragalactic sources, proper detailed understanding their emission, ambient conditions emitting gas, is necessary for a robust interpretation observations. With high resolution (7"-9") maps (~3x3 pc^2) mid-J molecular we aim to probe physical spatial distribution warm (50 few hundred K) dense (n(H_2)>10^5 cm^-3) across interface region M17 SW nebula. We have used dual color multiple pixel...
New observations of high-redshift objects are crucial for the improvement standard $\Lambda$CDM cosmological model and our understanding Universe. One main directions modern observational cosmology is analysis large-scale structure Universe, in particular, deep fields. We study Universe along line sight using latest version COSMOS2015 catalogue, which contains 518,404 high quality photometric redshifts galaxies selected optical range COSMOS field ($2\times 2$ deg$^2$), with depth up to...
Improvement of ALMA observatory requires increase bandwidth, sensitivity and number antennas. All these improvements will meet a bottleneck if digital system is not addressed. Currently 2 bit digitizer supporting <8 GHz bandwidth per polarization employed limiting correlation efficiency at 88%. Implementation downconverter substantially limits line searches compared to limit it's extendable. We have initiated study on possible implementation front-end which includes modular digitizer,...