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Extreme ultra-soft X-ray variability in an eROSITA observation of the narrow-line Seyfert 1 galaxy 1H 0707−495

Astronomy and astrophysics (Berlin), 2021-03, Vol.647, p.A6

2021

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Steep-spectrum AGN in eROSITA Final Equatorial-Depth Survey (eFEDS): Their host galaxies and multi-wavelength properties

Astronomy and astrophysics (Berlin), 2024-04, Vol.684, p.A153

2024

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eROSITA spectro-imaging analysis of the Abell 3408 galaxy cluster

Astronomy and astrophysics (Berlin), 2022-05, Vol.661, p.A26

2022

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SPIDERS: selection of spectroscopic targets using AGN candidates detected in all-sky X-ray surveys

Monthly notices of the Royal Astronomical Society, 2017-07, Vol.469 (1), p.1065-1095

2017

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Insights on the X‐ray weak quasar phenomenon from XMM–Newton monitoring of PHL 1092

Monthly notices of the Royal Astronomical Society, 2012-09, Vol.425 (3), p.1718-1737

2012

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Large-Amplitude X-Ray Outbursts from Galactic Nuclei: A Systematic Survey using ROSAT Archival Data

The Astronomical journal, 2002-09, Vol.124 (3), p.1308-1321

2002

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X-ray reflection in the narrow-line Seyfert 1 galaxy 1H 0707-495

Monthly notices of the Royal Astronomical Society, 2004-10, Vol.353 (4), p.1071-1077

2004

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2RXS—The deepest and cleanest X‐ray all‐sky catalogue before eROSITA

Astronomische Nachrichten, 2017-12, Vol.338 (9-10), p.972-977

Boller, Th

2017

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The spectral energy distribution of PKS 2004-447: a compact steep-spectrum source and possible radio-loud narrow-line Seyfert 1 galaxy

Monthly notices of the Royal Astronomical Society, 2006-07, Vol.370 (1), p.245-254

2006

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Second ROSAT all-sky survey (2RXS) source catalogue

Astronomy and astrophysics (Berlin), 2016-04, Vol.588, p.A103

2016

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Long-term spectral changes in the partial-covering candidate narrow-line Seyfert 1 galaxy 1H 0707-495

Monthly notices of the Royal Astronomical Society, 2004-10, Vol.353 (4), p.1064-1070

2004

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XMM—Newton observations of bright ROSAT selected active galactic nuclei with low intrinsic absorption

Monthly notices of the Royal Astronomical Society, 2006-01, Vol.365 (2), p.688-698

2006

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A longer XMM-Newton look at I Zwicky 1: physical conditions and variability of the ionized absorbers

Monthly notices of the Royal Astronomical Society, 2007-07, Vol.378 (3), p.873-880

2007

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SDSS-IV/SPIDERS: A catalogue of X-ray selected AGN properties: Spectral properties and black hole mass estimates for SPIDERS SDSS DR14 type 1 AGN

Astronomy and astrophysics (Berlin), 2019-05, Vol.625, p.A123

2019

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The first look at narrow-line Seyfert 1 galaxies with eROSITA

Astronomy and astrophysics (Berlin), 2023-01, Vol.669, p.A37

2023

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A possible line-like emission feature at 8 keV in the Seyfert 1.2 UGC 3973

Monthly notices of the Royal Astronomical Society, 2005-10, Vol.363 (1), p.64-70

2005

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Investigating ionized disc models of the variable narrow-line Seyfert 1 PG 1404+226

Monthly notices of the Royal Astronomical Society, 2005-08, Vol.361 (4), p.1197-1202

2005

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Predictions of the pseudo-complex theory of Gravity for EHT observations – II: theory and predictions

Monthly notices of the Royal Astronomical Society. Letters, 2019-05, Vol.485 (1), p.L121-L125

2019

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The eROSITA Final Equatorial Depth Survey (eFEDS): Complex absorption and soft excesses in hard X-ray–selected active galactic nuclei

Astronomy and astrophysics (Berlin), 2024-10, Vol.690, p.A132

2024

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Predictions of the pseudo-complex theory of gravity for EHT observations – I. Observational tests

Monthly notices of the Royal Astronomical Society. Letters, 2019-05, Vol.485 (1), p.L34-L37

2019

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The eROSITA Final Equatorial-Depth Survey (eFEDS): Variability catalogue and multi-epoch comparison

Astronomy and astrophysics (Berlin), 2022-05, Vol.661, p.A8

2022

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The eROSITA Final Equatorial Depth Survey (eFEDS). The hard X-ray selected sample

Astronomy and astrophysics (Berlin), 2024-10

2024

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Anfang und Ende des Universums: Was mit uns geschehen wird

Praxis der Naturwissenschaften - Physik in der Schule, 2009, Vol.58 (2), p.45-47

Boller, Th

2009

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Supersoft AGNs and their relations to Galactic binaries

Astronomische Nachrichten, 2010-02, Vol.331 (2), p.235-238

Boller, Th

2010

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Exceptional AGN long-timescale X-ray variability: The case of PHL 1092

EPJ Web of conferences, 2012-01, Vol.39, p.6002

2012

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Extreme ultra-soft X-ray variability in an eROSITA observation of the narrow-line Seyfert 1 galaxy 1H 0707−495

Steep-spectrum AGN in eROSITA Final Equatorial-Depth Survey (eFEDS): Their host galaxies and multi-wavelength properties

eROSITA spectro-imaging analysis of the Abell 3408 galaxy cluster

SPIDERS: selection of spectroscopic targets using AGN candidates detected in all-sky X-ray surveys

Insights on the X‐ray weak quasar phenomenon from XMM–Newton monitoring of PHL 1092

Large-Amplitude X-Ray Outbursts from Galactic Nuclei: A Systematic Survey using ROSAT Archival Data

X-ray reflection in the narrow-line Seyfert 1 galaxy 1H 0707-495

2RXS—The deepest and cleanest X‐ray all‐sky catalogue before eROSITA

The spectral energy distribution of PKS 2004-447: a compact steep-spectrum source and possible radio-loud narrow-line Seyfert 1 galaxy

Second ROSAT all-sky survey (2RXS) source catalogue

Long-term spectral changes in the partial-covering candidate narrow-line Seyfert 1 galaxy 1H 0707-495

XMM—Newton observations of bright ROSAT selected active galactic nuclei with low intrinsic absorption

A longer XMM-Newton look at I Zwicky 1: physical conditions and variability of the ionized absorbers

SDSS-IV/SPIDERS: A catalogue of X-ray selected AGN properties: Spectral properties and black hole mass estimates for SPIDERS SDSS DR14 type 1 AGN

The first look at narrow-line Seyfert 1 galaxies with eROSITA

A possible line-like emission feature at 8 keV in the Seyfert 1.2 UGC 3973

Investigating ionized disc models of the variable narrow-line Seyfert 1 PG 1404+226

Predictions of the pseudo-complex theory of Gravity for EHT observations – II: theory and predictions

The eROSITA Final Equatorial Depth Survey (eFEDS): Complex absorption and soft excesses in hard X-ray–selected active galactic nuclei

Predictions of the pseudo-complex theory of gravity for EHT observations – I. Observational tests

The eROSITA Final Equatorial-Depth Survey (eFEDS): Variability catalogue and multi-epoch comparison

The eROSITA Final Equatorial Depth Survey (eFEDS). The hard X-ray selected sample

Anfang und Ende des Universums: Was mit uns geschehen wird

Supersoft AGNs and their relations to Galactic binaries

Exceptional AGN long-timescale X-ray variability: The case of PHL 1092

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