
| Proposal ID | 069310 |
| Title | Final measure of the dipolar magnetic field of the first low-B SGR |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0693100101 |
| DOI | https://doi.org/10.5270/esa-0221ybq |
| Principal Investigator, PI | Dr Nanda Rea |
| Abstract | We have recently discovered the first SGR with a low magnetic field (Rea et al.2010, Science, 330, 944), SGR 0418+5729, discovered in outburst after it emittedbursts similar to those of magnetars (B<7.5x10^{12} G). This discovery had largeimplications not only for the magnetar model, but for the pulsars population ingeneral. We have now a tentative measure (at 2.8sigma level) of its periodderivative resulting in a B-field =7.1x10^{12} G). We ask now for a final 75ksXMM observation to confirm this detection at >5sigma. This will lead to have afinal measure of SGR 0418+5729 dipolar magnetic field, crucial for tuning themagnetar model as well as predict how many hidden magnetars there might bewithin the pulsar population. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2012-08-25T14:18:08Z/2012-08-26T12:02:07Z |
| Version | 17.56_20190403_1200 |
| 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 | 2013-09-12T00:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "XMM", "pulsar population", "5x10 ^{", "pulsars population", "period derivative", "dipolar magnetic field", "8sigma level", "sgr 0418", "1x10 ^{", "SGR 0418+5729", "emitted bursts", "final 75 xmm", "magnetar model" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Nanda Rea, 2013, 'Final measure of the dipolar magnetic field of the first low-B SGR', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-0221ybq |