M. Usatov

AAVSO Observer Code UMAB

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  • Research
  • Notes & EssaysMy essays on various astronomy topics.
  • PostersMy posters and collages designed to concentrate overview information about a particular topic and serve as quick go-to knowledgebases.
  • Galaxies
  • Planetary Nebulae
  • Diffuse Nebulae
  • Star Clusters
  • Solar System
  • Equipment
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Research Solar System

Main Belt asteroid as a Possible Younger Dryas impactor

September 21, 2020September 21, 2020

My latest work has just been published in Astronomische Nachrichten, early access link below. It suggests that an asteroid from […]

Galaxies Research

Optically Variable Quasars in AllWISE/PS1

March 26, 2019August 24, 2020

My latest publication (2018) abstract: Multi-wavelength variability, arising due to the supermassive black hole accretion instabilities, is one of the […]

Lenovo ThinkPad X1 Yoga (1st generation). Pardon me for this unrepresentative and beaten up Ikea table.
Other

Mac-like FreeBSD Laptop

August 26, 2018August 24, 2020

This is a tour of my FreeBSD laptop. I’ve set a goal of configuring a Unix laptop with focused and […]

Posters

Galaxy Types

November 20, 2016August 24, 2020

Do you know a difference between a dwarf spheroidal and a dwarf elliptical? This poster shows all the major morphological and […]

Posters

LambdaCDM and Galaxies

November 20, 2016

A poster about our universe, in particular the LambdaCDM cosmology and galaxies. Evolution of the universe via hierarchical clustering can be tracked from the […]

Posters

Planetary Sciences

November 20, 2016November 20, 2016

A poster about the solar system. Evolution is shown from a protoplanetary disk (center left) towards planet growth. The Grand Tack and the […]

Posters

Stellar-Mass Objects

November 20, 2016November 20, 2016

A poster with the most common objects you will find in a galaxy, most are of stellar mass. Evolution can be […]

Notes & Essays

Supermassive Black Holes

October 21, 2016

Supermassive black holes (SMBHs) represent an important aspect of galaxy evolution theory that remains at the frontier of modern research. […]

Notes & Essays

Definition of Photosphere, Optical Depth and Effective Temperature

October 21, 2016October 21, 2016

The stellar photosphere, the “surface of a star,” is defined as the layer of its atmosphere at an optical depth […]

Notes & Essays

Migrating Planets

October 21, 2016October 21, 2016

Among the pioneers of the idea of swirling vortices of gas being responsible for the formation of the solar system […]

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