PEARLS: NuSTAR and XMM-Newton Extragalactic Survey of the JWST North Ecliptic Pole Time-domain Field II

Zhao, Xiurui; Civano, Francesca; Willmer, Christopher N. A.; Bonoli, Silvia; Chen, Chien-Ting; Creech, Samantha; Dupke, Renato; Fornasini, Francesca M.; Jansen, Rolf A.; Kikuta, Satoshi; Koekemoer, Anton M.; Laha, Sibasish; Marchesi, Stefano; O’Brien, Rosalia; Silver, Ross; Willner, S. P.; Windhorst, Rogier A.; Yan, Haojing; Alcaniz, Jailson; Benitez, Narciso; Carneiro, Saulo; Cenarro, Javier; Cristóbal-Hornillos, David; Ederoclite, Alessandro; Hernán-Caballero, Antonio; López-Sanjuan, Carlos; Marín-Franch, Antonio; Mendes de Oliveira, Claudia; Moles, Mariano; Sodré, Laerte; Taylor, Keith; Varela, Jesús; Vázquez Ramió, Héctor

doi:10.3847/1538-4357/ad2b61

Cited by 4 publications

(1 citation statement)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…NuSTAR has monitored the field since Cycle 5 (PID 5192,6218,8180,and 9267;PI: F. Civano). For this work we use the Cycle 5+6 data and catalog published in Zhao et al (2021aZhao et al ( , 2021bZhao et al ( , 2024. The 21 NuSTAR observations took place over 28 months (between 2019 September and 2022 January), while the three XMM-Newton observations (part of the NuSTAR Cycle 6 program) were taken over 15 months (between 2020 October and 2022 January).…”

Section: X-ray Observations and Data Processingmentioning

confidence: 99%

TREASUREHUNT: Transients and Variability Discovered with HST in the JWST North Ecliptic Pole Time-domain Field

O’Brien,

Jansen,

Grogin

et al. 2024

ApJS

Self Cite

View full text Add to dashboard Cite

The James Webb Space Telescope (JWST) North Ecliptic Pole (NEP) Time-domain Field (TDF) is a >14′ diameter field optimized for multiwavelength time-domain science with JWST. It has been observed across the electromagnetic spectrum both from the ground and from space, including with the Hubble Space Telescope (HST). As part of HST observations over three cycles (the “TREASUREHUNT” program), deep images were obtained with the Wide Field Camera on the Advanced Camera for Surveys in F435W and F606W that cover almost the entire JWST NEP TDF. Many of the individual pointings of these programs partially overlap, allowing an initial assessment of the potential of this field for time-domain science with HST and JWST. The cumulative area of overlapping pointings is ∼88 arcmin2, with time intervals between individual epochs that range between 1 day and 4+ yr. To a depth of m AB ≃ 29.5 mag (F606W), we present the discovery of 12 transients and 190 variable candidates. For the variable candidates, we demonstrate that Gaussian statistics are applicable and estimate that ∼80 are false positives. The majority of the transients will be supernovae, although at least two are likely quasars. Most variable candidates are active galactic nuclei (AGNs), where we find 0.42% of the general z ≲ 6 field galaxy population to vary at the ∼3σ level. Based on a 5 yr time frame, this translates into a random supernova areal density of up to ∼0.07 transients arcmin−2 (∼245 deg−2) per epoch and a variable AGN areal density of ∼1.25 variables arcmin−2 (∼4500 deg−2) to these depths.

show abstract

Section: X-ray Observations and Data Processingmentioning

confidence: 99%

TREASUREHUNT: Transients and Variability Discovered with HST in the JWST North Ecliptic Pole Time-domain Field

O’Brien,

Jansen,

Grogin

et al. 2024

ApJS

Self Cite

View full text Add to dashboard Cite

show abstract

X-ray polarisation in AGN circumnuclear media

Vander Meulen,

Camps,

Savić

et al. 2024

A&A

View full text Add to dashboard Cite

Cold gas and dust reprocess the central X-ray emission of active galactic nuclei (AGN), producing characteristic spectro-polarimetric features in the X-ray band. The recent launch of IXPE allows for observations of this X-ray polarisation signal, which encodes unique information on the parsec-scale circumnuclear medium of obscured AGN. However, the models for interpreting these polarimetric data are under-explored and do not reach the same level of sophistication as the corresponding spectral models. We aim at closing the gap between the spectral and spectro-polarimetric modelling of AGN circumnuclear media in the X-ray band by providing the tools for simulating X-ray polarisation in complex geometries of cold gas alongside X-ray spectra. We lay out the framework for X-ray polarisation in 3D radiative transfer simulations and provide an implementation to the 3D radiative transfer code SKIRT, focussing on (de)polarisation due to scattering and fluorescent re-emission. As an application, we explored the spectro-polarimetric properties of a 2D toroidal reprocessor of cold gas, modelling the circumnuclear medium of AGN. For the 2D torus model, we find a complex behaviour of the polarisation angle with photon energy, which we interpret as a balance between the reprocessed photon flux originating from different sky regions, with a direct link to the torus geometry. We calculated a large grid of AGN torus models and demonstrated how spatially resolved X-ray polarisation maps could form a useful tool for interpreting the geometrical information that is encoded in IXPE observations. With this work, we release high-resolution AGN torus templates that simultaneously describe X-ray spectra and spectro-polarimetry for observational data fitting with XSPEC. The SKIRT code can now model X-ray polarisation simultaneously with X-ray spectra and provide synthetic spectro-polarimetric observations for complex 3D circumnuclear media, with all features of the established SKIRT framework available.

show abstract

Strong Limits on keV-Scale Galactic Sterile Neutrino Dark Matter with Stray Light from NuSTAR after 11 Years of Operation

Krivonos,

Barinov,

Mukhin

et al. 2024

Phys. Rev. Lett.

View full text Add to dashboard Cite

Using tremendous photon statistics gained with the stray light aperture of the telescope over 11 years of operation, we set strong limits on the emission of close to monochromatic photons from the radiative decays of putative dark matter sterile neutrinos in the Milky Way. In the energy range of 3–20 keV covered by the , the obtained limits reach the bottom edge of theoretical predictions of realistic models where sterile neutrinos are produced in the early Universe. Only a small region is left to explore, if the sterile neutrinos form the entire dark matter component. Published by the American Physical Society 2024

show abstract

PEARLS: NuSTAR and XMM-Newton Extragalactic Survey of the JWST North Ecliptic Pole Time-domain Field II

Cited by 4 publications

References 80 publications

TREASUREHUNT: Transients and Variability Discovered with HST in the JWST North Ecliptic Pole Time-domain Field

TREASUREHUNT: Transients and Variability Discovered with HST in the JWST North Ecliptic Pole Time-domain Field

X-ray polarisation in AGN circumnuclear media

Strong Limits on keV-Scale Galactic Sterile Neutrino Dark Matter with Stray Light from NuSTAR after 11 Years of Operation

Contact Info

Product

Resources

About