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Current Sheets, Plasmoids and Flux Ropes in the Heliosphere. Part I. 2-D or not 2-D? General and Observational Aspects
Li, Gang; Bruno, R.; Malandraki, O. +13 more
Recent accumulation of a critical mass of observational material from different spacecraft complete with the enhanced abilities of numerical methods have led to a boom of studies revealing the high complexity of processes occurring in the heliosphere. Views on the solar wind filling the interplanetary medium have dramatically developed from the be…
The Galactic center chimneys: the base of the multiphase outflow of the Milky Way
Churazov, E.; Ponti, G.; Heywood, I. +2 more
Context. Outflows and feedback are key ingredients of galaxy evolution. Evidence for an outflow arising from the Galactic center (GC) - the so-called GC chimneys - has recently been discovered at radio, infrared, and X-ray bands.
Aims: We undertake a detailed examination of the spatial relationships between the emission in the different bands…
Birth of the ELMs: a ZTF survey for evolved cataclysmic variables turning into extremely low-mass white dwarfs
Rix, Hans-Walter; El-Badry, Kareem; Kupfer, Thomas +2 more
We present a systematic survey for mass-transferring and recently detached cataclysmic variables (CVs) with evolved secondaries, which are progenitors of extremely low mass white dwarfs (ELM WDs), AM CVn systems, and detached ultracompact binaries. We select targets below the main sequence in the Gaia colour-magnitude diagram with ZTF light curves…
Iron in X-COP: Tracing enrichment in cluster outskirts with high accuracy abundance profiles
Gastaldello, Fabio; Ettori, Stefano; Bartalucci, Iacopo +11 more
We present the first metal abundance profiles for a representative sample of massive clusters. Our measurements extend to R500 and are corrected for a systematic error plaguing previous outskirt estimates. Our profiles flatten out at large radii, admittedly not a new result, however the radial range and representative nature of our samp…
Systematic Study of AGN Clumpy Tori with Broadband X-Ray Spectroscopy: Updated Unified Picture of AGN Structure
Tanimoto, Atsushi; Ueda, Yoshihiro; Ogawa, Shoji +1 more
We present the results of a systematic, broadband X-ray spectral analysis of nearby active galactic nuclei (AGNs) with the X-ray clumpy torus model (XCLUMPY). By adding 16 AGNs newly analyzed in this paper, we study a total of 28 AGNs, including unabsorbed and absorbed AGNs taken from Ichikawa et al. and García-Bernete et al. This is the largest s…
Constraining primordial black holes as dark matter at JUNO
Wang, Sai; Xia, Dong-Mei; Chang, Zhe +2 more
As an attractive candidate for dark matter, the primordial black holes (PBHs) in the mass range (8 ×1014∼1016) g could be detected via their Hawking radiation, including neutrinos and antineutrinos of three flavors. In this paper, we investigate the possibility to constrain the PBHs as dark matter by measuring (anti)neutrino …
All-sky visible and near infrared space astrometry
Tanga, Paolo; Ting, Yuan-Sen; Zwitter, Tomaž +27 more
The era of all-sky space astrometry began with the Hipparcos mission in 1989 and provided the first very accurate catalogue of apparent magnitudes, positions, parallaxes and proper motions of 120 000 bright stars at the milliarcsec (or milliarcsec per year) accuracy level. Hipparcos has now been superseded by the results of the Gaia mission. The s…
Comparing the pre-SNe feedback and environmental pressures for 6000 H II regions across 19 nearby spiral galaxies
Chevance, M.; Murphy, E. J.; Dale, D. A. +28 more
The feedback from young stars (i.e. pre-supernova) is thought to play a crucial role in molecular cloud destruction. In this paper, we assess the feedback mechanisms acting within a sample of 5810 H II regions identified from the PHANGS-MUSE survey of 19 nearby (<20 Mpc) star-forming, main-sequence spiral galaxies [log(M⋆/M⊙
Multi-Annual Monitoring of the Water Vapor Vertical Distribution on Mars by SPICAM on Mars Express
Montmessin, Franck; Trokhimovskiy, Alexander; Bertaux, Jean-Loup +3 more
The distribution of water vapor with altitude has long remained a missing piece of the observational data set of water vapor on Mars. In this study, we present the first multi-annual survey of water vapor profile covering the altitude range from 0 to 100 km based on the SPICAM/Mars Express occultation measurements. During the aphelion season, wate…
Multiple Stellar Populations along the Red Horizontal Branch and Red Clump of Globular Clusters
Milone, A. P.; Cordoni, G.; Marino, A. F. +5 more
We exploit multiband Hubble Space Telescope photometry to investigate multiple populations (MPs) along the red horizontal branches (HBs) and red clumps of 14 metal-rich globular clusters (GCs), including 12 Milky Way GCs and the Magellanic Cloud GCs NGC 1978 and NGC 416. Based on appropriate two-color diagrams, we find that the fraction of first-g…