Spectra of X-ray galaxies in filaments

Abstract

Eighteen bright X-ray emitting galaxies were found in nearby filaments within SDSS region. Basic X-ray spectral parameters were estimated for these galaxies using power law model with photoelectric absorption. A close pair of X-ray galaxies was found.

X-ray galaxies in nearby filaments

“…Figure 3: Example of new X-ray spectrum of Seyfert galaxy in SDSS filament: 2MASX J15585579+0248338. Details see in [5].…”

“…2. For 7 galaxies X-ray spectra were obtained in [5] at first time. One of them is presented at Fig.…”

“…It was also shown in [4] that the main type of X-ray galaxies is Seyfert 1. X-ray spectra of 42 Seyfert 1 galaxies from SDSS region were analysed in [5]. These galaxies has radial velocities from 4000 to 39000 km/s (appropriate for filament detection) and does not necessary belongs to known filaments from [1].…”

The luminosity - spectral index dependence of the X-ray bright Seyfert galaxies

“…The distribution of the main elements of LSS -filaments, voids and walls -can be recovered for redshifts up to 0.2 ( [16], [18]). It was shown in [14] and [17] that the most frequent type of X-ray emitting galaxies at such distances is Seyfert 1. Spectra of Seyfert 1 galaxies in SDSS region were analyzed in [17].…”

“…It was shown in [14] and [17] that the most frequent type of X-ray emitting galaxies at such distances is Seyfert 1. Spectra of Seyfert 1 galaxies in SDSS region were analyzed in [17]. 30 of them are Compton thin (N H < 10 25 cm −2 ) and thus can be correctly fitted by the powerlaw.…”