Search Publications
Missions
Journals
Publication Years
Cosmography in f (Q ) gravity
Wang, Deng; Sahoo, P. K.; Mandal, Sanjay
Cosmography is an ideal tool to investigate the cosmic expansion history of the Universe in a model-independent way. The equations of motion in modified theories of gravity are usually very complicated; cosmography may select practical models without imposing arbitrary choices a priori. We use the model-independent way to derive f (z ) and its der…
Neutrino and Positron Constraints on Spinning Primordial Black Hole Dark Matter
Ray, Anupam; Laha, Ranjan; Dasgupta, Basudeb
Primordial black holes can have substantial spin—a fundamental property that has a strong effect on its evaporation rate. We conduct a comprehensive study of the detectability of primordial black holes with non-negligible spin, via the searches for the neutrinos and positrons in the MeV energy range. Diffuse supernova neutrino background searches …
Impact of space weather on climate and habitability of terrestrial-type exoplanets
Luhmann, J. G.; France, K.; Verkhoglyadova, O. P. +44 more
The search for life in the Universe is a fundamental problem of astrobiology and modern science. The current progress in the detection of terrestrial-type exoplanets has opened a new avenue in the characterization of exoplanetary atmospheres and in the search for biosignatures of life with the upcoming ground-based and space missions. To specify t…
A lack of evolution in the very bright end of the galaxy luminosity function from z ≃ 8 to 10
Bowler, R. A. A.; McLure, R. J.; Dunlop, J. S. +5 more
We utilize deep near-infrared survey data from the UltraVISTA fourth data release (DR4) and the VIDEO survey, in combination with overlapping optical and Spitzer data, to search for bright star-forming galaxies at z ≳ 7.5. Using a full photometric redshift fitting analysis applied to the ∼6 deg^2 of imaging searched, we find 27 Lyman break galaxie…
The SPTpol Extended Cluster Survey
Sharon, K.; Gladders, M. D.; Ade, P. A. R. +135 more
We describe the observations and resultant galaxy cluster catalog from the 2770 deg2 SPTpol Extended Cluster Survey (SPT-ECS). Clusters are identified via the Sunyaev-Zel'dovich (SZ) effect and confirmed with a combination of archival and targeted follow-up data, making particular use of data from the Dark Energy Survey (DES). With inco…
The Spectrometer/Telescope for Imaging X-rays (STIX)
Krucker, Säm; Veronig, A. M.; Rodríguez-Pacheco, J. +86 more
Aims: The Spectrometer Telescope for Imaging X-rays (STIX) on Solar Orbiter is a hard X-ray imaging spectrometer, which covers the energy range from 4 to 150 keV. STIX observes hard X-ray bremsstrahlung emissions from solar flares and therefore provides diagnostics of the hottest (⪆10 MK) flare plasma while quantifying the location, spectrum,…
Hunting for open clusters in Gaia DR2: 582 new open clusters in the Galactic disc
Castro-Ginard, A.; Jordi, C.; Luri, X. +8 more
Context. Open clusters are key targets for studies of Galaxy structure and evolution, and stellar physics. Since the Gaia data release 2 (DR2), the discovery of undetected clusters has shown that previous surveys were incomplete.
Aims: Our aim is to exploit the Big Data capabilities of machine learning to detect new open clusters in Gaia DR2,…
The Gaia-Kepler Stellar Properties Catalog. II. Planet Radius Demographics as a Function of Stellar Mass and Age
van Saders, Jennifer L.; Huber, Daniel; Berger, Travis A. +2 more
Studies of exoplanet demographics require large samples and precise constraints on exoplanet host stars. Using the homogeneous Kepler stellar properties derived using the Gaia Data Release 2 by Berger et al., we recompute Kepler planet radii and incident fluxes and investigate their distributions with stellar mass and age. We measure the stellar m…
The ALPINE-ALMA [CII] survey. The nature, luminosity function, and star formation history of dusty galaxies up to z ≃ 6
Cimatti, A.; Pozzi, F.; Rodighiero, G. +30 more
Aims: We present the detailed characterisation of a sample of 56 sources serendipitously detected in ALMA band 7 as part of the ALMA Large Program to INvestigate CII at Early Times (ALPINE). These sources, detected in COSMOS and ECDFS, have been used to derive the total infrared luminosity function (LF) and to estimate the cosmic star formati…
Dust masses of young disks: constraining the initial solid reservoir for planet formation
Manara, Carlo F.; van Dishoeck, Ewine F.; Rosotti, Giovanni P. +7 more
Context. Recent years have seen building evidence that planet formation starts early, in the first ~0.5 Myr. Studying the dust masses available in young disks enables us to understand the origin of planetary systems given that mature disks are lacking the solid material necessary to reproduce the observed exoplanetary systems, especially the massi…