XMM-Newton observations of SDSS J143030.22$-$001115.1: an unusually flat spectrum AGN

TL;DR

This study presents XMM-Newton observations revealing a complex X-ray spectrum in the AGN SDSS 1430-0011, characterized by an unusual flat continuum likely caused by ionized or partial covering absorption, with variable luminosity.

Contribution

It provides detailed X-ray spectral analysis of SDSS 1430-0011, demonstrating the presence of complex absorption features and variability, expanding understanding of AGN spectral diversity.

Findings

Spectrum is complex with ionized or partial covering absorber

Underlying power-law is typical for AGNs

Luminosity varies due to absorber property changes

Abstract

We present XMM observations of the AGN SDSS 1430-0011. The low S/N spectrum of this source obtained in a snap shot Chandra observation showed an unusually flat continuum. With the follow up XMM observations we find that the source spectrum is complex; it either has an ionized absorber or a partially covering absorber. The underlying power-law is in the normal range observed for AGNs. The low luminosity of the source during Chandra observations can be understood in terms of variations in the absorber properties. The X-ray and optical properties of this source are such that it cannot be securely classified as either a narrow line Seyfert 1 or a broad line Seyfert 1 galaxy.