A dataset provided by the European Space Agency

Name: THE HARDEST X-RAY SOURCE FOUND IN THE NUSTAR SERENDIPITOUS SURVEY: A DEEPER, BRO
Published: 2019-02-09T23:00:00Z
License: https://creativecommons.org/licenses/by-nc/3.0/igo

Proposal ID	079567
Title	THE HARDEST X-RAY SOURCE FOUND IN THE NUSTAR SERENDIPITOUS SURVEY: A DEEPER, BRO
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0795670101
DOI	https://doi.org/10.5270/esa-82r8cbt
Principal Investigator, PI	Mr George Lansbury
Abstract	Through our survey of all serendipitous sources detected with NuSTAR, we havefound one source (J1506) which stands out in having the most extreme hard X-rayspectrum. The existing data suggest that J1506 is a Compton-thick (CT) AGN.There is currently a sparsity of such discoveries in the NuSTAR extragalacticsurveys. In determining the nature of J1506 we are limited by: (1) the shallowdepth of the off-axis (10.8ks) NuSTAR coverage; and (2) the lack of sensitivesoft X-ray (<8keV) coverage. Here, we propose a deeper and broader-energyinvestigation using on-axis NuSTAR and XMM observations of 60ks and 30ksduration. These will dramatically improve the broad-band (~0.5-50keV) spectralconstraints, detect iron line emission, and place stringent constraints on a merging companion galaxy.
Publications	Classification of 4XMM-DR9 sources by machine learning \|Zhang Yanxia Zhao Yongheng \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z Fundamental X-ray corona parameters of Swift/BAT AGN \|Hinkle Jason T. Mushotzky Richard \| MNRAS \| 506-4960 \| 2021 \| 2021MNRAS.506.4960H \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.506.4960H The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII O VIII and Fe L-shell Transitions \|Pan Zeyang Qu Zhijie et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez Antonio C. \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R Search for Young Stellar Objects within 4XMM-DR13 Using CatBoost and SPE \|Ma Xiangyao Zhang Yanxia et al. \| AJ \| 168-210 \| 2024 \| 2024AJ....168..210M \| http://ui.adsabs.harvard.edu/#abs/2024AJ....168..210M
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2018-01-20T05:20:16Z/2018-01-20T15:53:36Z
Version	21.51_20241115_1113
Mission Description	The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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	2019-02-09T23:00:00Z
Last Update	2026-07-09
Keywords	"nustar coverage", "stringent constraints", "hardest xray source", "50kev spectral constraints", "axis nustar", "sensitive soft xray", "existing data", "broad band", "NuSTAR", "XMM", "iron line emission", "hard xray spectrum", "nustar extragalactic surveys", "source j1506", "merging companion galaxy", "broader energy investigation", "8kev coverage"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Mr George Lansbury, 2019, 'THE HARDEST X-RAY SOURCE FOUND IN THE NUSTAR SERENDIPITOUS SURVEY: A DEEPER, BRO', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-82r8cbt
Rights	Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.