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18 papers · 2 filters
Radio investigation of Ultra-Luminous X-ray Sources in the SKA Era
Anna Wolter, Anthony P. Rushton, Mar Mezcua +5
A puzzling class of exotic objects, which have been known about for more than 30 years, is reaching a new era of understanding. We have discovered hundreds of Ultra Luminous X-ray…
Ultraviolet Spectroscopy of Type IIb Supernovae: Diversity and the Impact of Circumstellar Material
Sagi Ben-Ami, Stephan Hachinger, Avishay Gal-Yam +9
We present new Hubble Space Telescope (HST) multi-epoch ultraviolet (UV) spectra of the bright Type IIb SN 2013df, and undertake a comprehensive anal- ysis of the set of four Type…
A NuSTAR observation of the fast symbiotic nova V745 Sco in outburst
M. Orio, V. Rana, K. L. Page +2
The fast recurrent nova V745 Sco was observed in the 3-79 keV X-rays band with NuSTAR 10 days after the optical discovery. The measured X-ray emission is consistent with a collisio…
Type Ia Supernova Spectral Features in the Context of Their Host Galaxy Properties
Y. -C. Pan, M. Sullivan, K. Maguire +5
We analyse spectroscopic measurements of 122 type Ia supernovae (SNe Ia) with z<0.09 discovered by the Palomar Transient Factory, focusing on the properties of the Si II 6355 and C…
The Broad-Lined Type Ic SN 2012ap and the Nature of Relativistic Supernovae Lacking a Gamma-ray Burst Detection
D. Milisavljevic, R. Margutti, J. T. Parrent +20
We present ultraviolet, optical, and near-infrared observations of SN 2012ap, a broad-lined Type Ic supernova in the galaxy NGC 1729 that produced a relativistic and rapidly decele…
Exploring the spectral diversity of low-redshift Type Ia supernovae using the Palomar Transient Factory
Kate Maguire, Mark Sullivan, Yen-Chen Pan +15
We present an investigation of the optical spectra of 264 low-redshift (z < 0.2) Type Ia supernovae (SNe Ia) discovered by the Palomar Transient Factory, an untargeted transient su…