| Proposal ID | 090023 |
| Title | The extreme X-ray weakness of PG 0043+039 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0900230301 |
| DOI | https://doi.org/10.57780/esa-8hg9is9 |
| Principal Investigator, PI | Dr Norbert Schartel |
| Abstract | PG 0043+039 is the most X-ray weak quasar known. XMM-Newton observation in 2013set a clear detection meaning a flux at least 3.8 times higher than in 2005. Thequasar remained extremely X-ray weak, with a peculiar spectral energydistribution (SED) and a unique UV spectrum. This unique source deservesfurther, deeper, observations, to establish its X-ray spectrum, its optical tohard-X-ray SED and its variability. We aim at probing our hypothesis that PG0043+039 is a genuine X-ray weak quasar and to test alternative scenarios(ADAFs, missing corona, cyclotron-emission). We propose to observe PG0043+039quasi-simultaneously (2 days) with XMM-Newton (20+100ks), NuSTAR (60ks), HST (2orbits), 10m Hobby-Eberly and 10m SALT Telescope in South Africa. |
| Publications | No publications found for current proposal! |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2022-06-15T16:54:19Z/2022-07-11T01:56:10Z |
| 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 | 2023-07-28T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | XMM-Newton, OM, RGS, EPIC, X-ray, Multi-Mirror, SAS |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Norbert Schartel, 2023, 'The extreme X-ray weakness of PG 0043+039', 21.51_20241115_1113, European Space Agency, https://doi.org/10.57780/esa-8hg9is9 |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |