A dataset provided by the European Space Agency

Name 069458
Title Revealing broad iron line & QPO in the narrow-line Seyfert 1 galaxy II Zw 177


DOI 10.5270/esa-4r08yhv
Author Dr Gulab Dewangan
Description We request a long 130ks XMM-Newton observation of the narrow-line Seyfert 1 galaxy IIZw177. The existing short 8.5ks XMM-Newton exposure has suggested a relativistically broadened iron K line with the red-wing extending down to 4.5keV in the EPIC-pn data. These data also suggest the presence of quasi-periodic oscillations (QPO) at 9e-4 Hz. The long observation can not only determine the relativistic disk emission line but also confirm the presence of QPO and allow us to search for PSD breaks, thus leading to unique and the only discovery of a broad line and QPO from the same AGN.
Publication Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
X-ray-UV variability and the origin of soft X-ray excess emission from II Zw 177 . Pal, Main, Dewangan, Gulab C., et all. . MNRAS . 457-875 . 2016 . 2016MNRAS.457..875P ,
Ensemble X-ray variability of active galactic nuclei. II. Excess variance and updated structure function . Vagnetti, F., Middei, R., et all. . A&A . 593-55 . 2016 . 2016A&A...593A..55V ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton . Svoboda, J., Guainazzi, M., . A&A . 603-127 . 2017 . 2017A&A...603A.127S ,
Are narrow-line Seyfert 1 galaxies highly accreting low-MBH AGNs? . Williams, James K., Gliozzi, Mario, . MNRAS . 480-96 . 2018 . 2018MNRAS.480...96W ,
A Comparison of X-Ray Photon Indices among the Narrow- and Broad-line Seyfert 1 Galaxies . Ojha, Vineet, Chand, Hum, et all. . ApJ . 896-95 . 2020 . 2020ApJ...896...95O ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2012-05-29T03:27:03Z/2012-05-30T17:31:34Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations.
Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2013-06-14T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-06-14T00:00:00Z, 069458, 17.56_20190403_1200. https://doi.org/10.5270/esa-4r08yhv