The seven nearest thermally emitting neutron stars may be the best way to samplethe true demography of neutron stars, and arguably offer the best prospects formeasuring neutron-star radii. Both tasks are limited by our ignorance of theirmagnetic field strengths, and hence we have been determining timing solutionswith Chandra and XMM. The results so far show a surprising grouping of fieldstrengths in a range intermediate between normal pulsars and magnetars, with ahint at an interaction between the thermal emission and magnetic field. Here, wepropose to measure the spin-down of RX J0420.0-5022, which has the lowesttemperature of the sample and will complete the spin-down measurements forthermally emitting neutron stars with confirmed periodicities.
Publications
A Coherent Timing Solution for the Nearby, Thermally Emitting Isolated Neutron Star RX J0420.0-5022 |Kaplan, D. L., van Kerkwijk, M. H., | ApJ | 740-30 | 2011 | 2011ApJ...740L..30K | http://ui.adsabs.harvard.edu/#abs/2011ApJ...740L..30K
The Optical/UV Excess of X-Ray-dim Isolated Neutron Stars. I. Bremsstrahlung Emission from a Strangeon Star Atmosphere |Wang, Weiyang, Lu, Jiguang, et al. | ApJ | 837-81 | 2017 | 2017ApJ...837...81W | http://ui.adsabs.harvard.edu/#abs/2017ApJ...837...81W
The optical/UV excess of X-ray-dim isolated neutron star II. Nonuniformity of plasma on a strangeon star surface |Wang, Wei-Yang, Feng, Yi, et al. | RAA | 18-82 | 2018 | 2018RAA....18...82W | http://ui.adsabs.harvard.edu/#abs/2018RAA....18...82W
Universal detection of high-temperature emission in X-ray isolated neutron stars |Yoneyama, Tomokage, Hayashida, Kiyoshi, et al. | PASJ | 71-17 | 2019 | 2019PASJ...71...17Y | http://ui.adsabs.harvard.edu/#abs/2019PASJ...71...17Y
Axion Emission Can Explain a New Hard X-Ray Excess from Nearby Isolated Neutron Stars |Buschmann, Malte, Co, Raymond T., et al. | PhRvL | 126-21102 | 2021 | 2021PhRvL.126b1102B | http://ui.adsabs.harvard.edu/#abs/2021PhRvL.126b1102B
Two decades of X-ray observations of the isolated neutron star RX J1856.5 - 3754: detection of thermal and non-thermal hard X-rays and refined spin-down measurement |De Grandis, Davide, Rigoselli, Michela, et al. | MNRAS | 516-4932 | 2022 | 2022MNRAS.516.4932D | http://ui.adsabs.harvard.edu/#abs/2022MNRAS.516.4932D
The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII, O VIII, and Fe L-shell Transitions |Pan, Zeyang, Qu, Zhijie, et al. | ApJS | 271-62 | 2024 | 2024ApJS..271...62P | http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P
Robust constraints on feebly interacting particles using XMM-Newton |Luque, Pedro De la Torre, Balaji, Shyam, | PhRvD | 109-L101305 | 2024 | 2024PhRvD.109j1305L | http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L
Multimessenger search for electrophilic feebly interacting particles from supernovae |Luque, Pedro De la Torre, Balaji, Shyam, | PhRvD | 109-103028 | 2024 | 2024PhRvD.109j3028L | http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L
Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints |De la Torre Luque, Pedro, Balaji, Shyam, | ApJ | 968-46 | 2024 | 2024ApJ...968...46D | http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2010-03-30T11:55:07Z/2011-04-11T08:51:54Z
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.
European Space Agency, Prof David Kaplan, 2012, 'Measuring the Spin-down of The Nearby Isolated Neutron Star RX J0420.0-5022', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-qne6mwk
