Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Babyk, Iurii"'
Autor:
O'Sullivan, Ewan, Rajpurohit, Kamlesh, Schellenberger, Gerrit, Vrtilek, Jan, David, Laurence P., Babul, Arif, Olivares, Valeria, Ubertosi, Francesco, Kolokythas, Konstantinos, Babyk, Iurii, Loubser, Ilani
NGC 777 provides an example of a phenomenon observed in some group-central ellipticals, in which the temperature profile shows a central peak, despite the short central cooling time of the intra-group medium. We use deep Chandra X-ray observations of
Externí odkaz:
http://arxiv.org/abs/2405.13667
Autor:
Babyk, Iurii, McNamara, Brian
Publikováno v:
2023 ApJ, Vol. 946, P. 54
The halo mass-temperature relation for a sample of 216 galaxy clusters, groups, and individual galaxies observed by $Chandra$ X-ray Observatory is presented. Using accurate spectral measurements of their hot atmospheres, we derive the $M-T$ relation
Externí odkaz:
http://arxiv.org/abs/2302.11247
We present new, deep optical observations of the early-type galaxy NGC 4278, which is located in a small loose group. We find that the galaxy lacks fine substructure, i.e., it appears relaxed, out to a radius of $\sim$70 kpc. Our $g$- and $i$-band su
Externí odkaz:
http://arxiv.org/abs/2301.02292
Autor:
Tamhane, Prathamesh D., McNamara, Brian R., Russell, Helen R., Edge, Alastair C., Fabian, Andrew C., Nulsen, Paul E. J., Babyk, Iurii V.
Publikováno v:
MNRAS 516 October 2022 Pages 861 882
Molecular gas flows are analyzed in 14 cluster galaxies (BCGs) centered in cooling hot atmospheres. The BCGs contain $10^{9}-10^{11}~\rm M_\odot$ of molecular gas, much of which is being moved by radio jets and lobes. The molecular flows and radio je
Externí odkaz:
http://arxiv.org/abs/2207.14326
Publikováno v:
The Astrophysical Journal, Volume 944, Issue 1, id.69, 7 pp., 2023
A strong correlation between atmospheric pressure and molecular gas mass is found in central cluster galaxies and early-type galaxies. This trend and a similar trend with atmospheric gas density would naturally arise if the molecular clouds condensed
Externí odkaz:
http://arxiv.org/abs/2110.15410
Large galaxies may contain an "atmosphere" of hot interstellar X-ray gas, and the temperature and radial density profile of this gas can be used to measure the total mass of the galaxy contained within a given radius r. We use this technique for 102
Externí odkaz:
http://arxiv.org/abs/2010.14372
We compare the empirical relationships between the mass of a galaxy's globular system M_GCS, the gas mass in the hot X-ray atmosphere M_X within a fiducial radius of 5 r_e, the total gravitational mass M_grav within 5 r_e, and lastly the total halo m
Externí odkaz:
http://arxiv.org/abs/1911.08664
Autor:
Chkheidze, Nino, Babyk, Iurii
In the present paper an alternative theoretical interpretation to the generally assumed thermal emission models of the observed X-ray spectrum of isolated pulsar RX J0420.0-5022 is presented. It is well known that the distribution function of relativ
Externí odkaz:
http://arxiv.org/abs/1304.2306
Autor:
Tamhane, Prathamesh D, McNamara, Brian R, Russell, Helen R, Edge, Alastair C, Fabian, Andrew C, Nulsen, Paul E J, Babyk, Iurii V
Publikováno v:
Monthly Notices of the Royal Astronomical Society; 10/15/2022, Vol. 516 Issue 1, p861-882, 22p
Autor:
Vavilova, Irina, Pakuliak, Ludmila, Babyk, Iurii, Elyiv, Andrii, Dobrycheva, Daria, Melnyk, Olga
Publikováno v:
In Knowledge Discovery in Big Data from Astronomy and Earth Observation 2020:57-102