| Name | 090023 |
| Title | The extreme X-ray weakness of PG 0043+039 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0900230301 |
| DOI | https://doi.org/10.57780/esa-8hg9is9 |
| Author | European Space Agency |
| Description | PG 0043+039 is the most X-ray weak quasar known. XMM-Newton observation in 2013 set a clear detection meaning a flux at least 3.8 times higher than in 2005. The quasar remained extremely X-ray weak, with a peculiar spectral energy distribution (SED) and a unique UV spectrum. This unique source deserves further, deeper, observations, to establish its X-ray spectrum, its optical to hard-X-ray SED and its variability. We aim at probing our hypothesis that PG 0043+039 is a genuine X-ray weak quasar and to test alternative scenarios (ADAFs, missing corona, cyclotron-emission). We propose to observe PG0043+039 quasi-simultaneously (2 days) with XMM-Newton (20+100ks), NuSTAR (60ks), HST (2 orbits), 10m Hobby-Eberly and 10m SALT Telescope in South Africa. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2022-06-15T16:54:19Z/2022-07-11T01:56:10Z |
| Version | 20.08_20220509_1852 |
| 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 | 2023-07-28T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2023, The Extreme X-Ray Weakness Of Pg 0043+039, 20.08_20220509_1852, European Space Agency, https://doi.org/10.57780/esa-8hg9is9 |