| Name | 020473 |
| Title | XMM-NEWTON OBSERVATIONS OF GX 339-4 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0204730201 |
| DOI | https://doi.org/10.5270/esa-llijj2v |
| Author | European Space Agency |
| Description | The ADAF model for stellar-mass Galactic black holes makes a specific prediction: at fractional Eddington mass accretion rates below 0.08, the inner edge of the accretion disk should be truncated at appx. 1 E+4 Schwarzschild radii. Disks truncated at such radii should not be visible in X-rays, as viscous heating is small when the disk is not very deep in the gravitational potential. We request 270 ksec of goodtime to observe GX 339-4 in quiescence with XMM-Newton, to rigorously test the truncated disk prediction at an m-dot-Edd. of 3 E-5 by searching for a disk component in the X-ray spectrum. We will support this observation with IR (Magellan) and radio (ATCA) monitoring observation. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2004-03-16T15:40:25Z/2004-03-20T05:46:55Z |
| 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 | 2005-12-23T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2005, Xmm-Newton Observations Of Gx 339-4, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-llijj2v |