| Name | 040026 |
| Title | Maintaining the Ephemeris of the Geminga Pulsar Until GLAST |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0400260201 |
| DOI | https://doi.org/10.5270/esa-i3cgdwb |
| Author | Prof Jules Halpern |
| Description | The Geminga pulsar is unique among gamma-ray pulsars in having a precise and continuous, phase-connected ephemeris from 1973 up to the present. Since the demise of the Compton Gamma-Ray Observatory in June 2000, the only practical method of maintaining Geminga.s ephemeris is with X-ray observations. To extend our continuing XMM-Newton program on Geminga, we now request short observations twice per year until 2007, when GLAST and/or AGILE will resume the gamma-ray timing. The principal scientific need for a phase-connected ephemeris is to provide an absolute phase reference for ground-based observations, and to monitor glitch activity such as that which recurred in 2002. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-10-02T07:04:22Z/2007-03-11T18:16:35Z |
| 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 | 2008-03-29T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Jules Halpern, 2008, 040026, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-i3cgdwb |