| Name | 030742 |
| Title | A simultaneous near-IR and X-ray Spectroscopy Study of Circinus X-1 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0307420401 |
| DOI | https://doi.org/10.5270/esa-b492t52 |
| Author | European Space Agency |
| Description | Circinus X-1 is a key object in accretion/outflow studies, as it shows repeated transitions from pure accretion to accretion/outflow during periastron passage in its eccentric 16.6-day orbit, a transition crucial to violent objects from the X-ray Binaries through to Active Galactic Nuclei and hypernova/gamma-ray burst systems. Variable X-ray P-Cygni profiles offer a key window into the accretion state of the inner disk, however comparable time-resolved ground-based study has never been undertaken. With a joint UT1/ISAAC - XMM/EPIC programme, we will perform a simultaneous spectroscopic study of the inner accretion disk and IR-bright regions at the time of transition, thus identifying for the first time the emission regions and directly constraining the physics of the state-change. |
| Publication | No observations found associated with the current proposal |
| Instrument | EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-03-07T00:06:56Z/2006-03-11T07:12:50Z |
| 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 | 2007-05-31T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2007, A Simultaneous Near-Ir And X-Ray Spectroscopy Study Of Circinus X-1, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-b492t52 |