Hae
Aineistot 11-20 / 443
Growing evidence that SNe Iax are not a one-parameter family The case of PS1-12bwh
In this study, we present observations of a type Iax supernova, PS1-12bwh, discovered during the Pan-STARRS1 3 pi-survey. Our analysis was driven by previously unseen pre-maximum, spectroscopic heterogeneity. While the ...
MAGIC upper limits on the GRB 090102 afterglow
<p>
Indications of a GeV component in the emission from gamma-ray bursts (GRBs) are known since the Energetic Gamma-Ray Experiment Telescope observations during the 1990s and they have been confirmed by the data of the ...
Observational constraints on the magnetic field of the bright transient Be/X-ray pulsar SXP 4.78
We report results of the spectral and timing analysis of the Be/X-ray pulsar SXP 4.78 using the data obtained during its recent outburst with NuSTAR, Swift, Chandra, and NICER observatories. Using an overall evolution of ...
Origins of ultradiffuse galaxies in the Coma cluster - II. Constraints from their stellar populations
In this second paper of the series we study, with new Keck/DEIMOS spectra, the stellar populations of seven spectroscopically confirmed ultradiffuse galaxies (UDGs) in the Coma cluster. We find intermediate to old ages ...
Low-redshift quasars in the SDSS Stripe 82-II. Associated companion galaxies and signature of star formation
We present optical spectroscopy of the close companions of 22 low-redshift (z < 0.5) quasars (QSO) selected from a larger sample of QSO in the SDSS Stripe82 region for which both the host galaxy and the large-scale ...
Core-collapse supernova progenitor constraints using the spatial distributions of massive stars in local galaxies
<p>We study the spatial correlations between the H$alpha$ emission and different types of massive stars in two local galaxies, the Large Magellanic Cloud (LMC) and Messier 33. We compare these to correlations derived for ...
Processing GOTO data with the Rubin Observatory LSST Science Pipelines I: Production of coadded frames
<p>The past few decades have seen the burgeoning of wide-field, high-cadence surveys, the most formidable of which will be the Legacy Survey of
Space and Time (LSST) to be conducted by the Vera C. Rubin Observatory. So ...
Constraints on particles and fields from full Stokes observations of AGN
<p>Combined polarization imaging of radio
jets from Active Galactic Nuclei (AGN) in circular and linear
polarization, also known as full Stokes imaging, has the potential to
constrain both the magnetic field structure ...