A. Singh
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View article: Eruptive mass loss less than a year before the explosion of superluminous supernovae. II. A systematic search for pre-explosion eruptions with VLT/X-shooter
Eruptive mass loss less than a year before the explosion of superluminous supernovae. II. A systematic search for pre-explosion eruptions with VLT/X-shooter Open
We present X-shooter observations of a sample of 21 hydrogen-poor superluminous supernovae (SLSNe-I), spanning a redshift range of z=0.13-0.95, aimed at searching for shells of circumstellar material (CSM). Specifically, we focus on identi…
View article: Precursor Activity Preceding Interacting Supernovae I: Bridging the Gap with SN 2022mop
Precursor Activity Preceding Interacting Supernovae I: Bridging the Gap with SN 2022mop Open
Over the past two decades, an increasing number of transients have shown luminous activity at their explosion sites weeks to years before an interacting supernova (SN) is observed. For some objects, this pre-SN activity is typically linked…
View article: Bridging Theory and Practice in Science Education Using Augmented Reality
Bridging Theory and Practice in Science Education Using Augmented Reality Open
View article: Galaxy Observations to Understand the Structure of the Universe
Galaxy Observations to Understand the Structure of the Universe Open
View article: Eruptive mass loss less than a year before the explosion of superluminous supernovae: I. The cases of SN 2020xga and SN 2022xgc
Eruptive mass loss less than a year before the explosion of superluminous supernovae: I. The cases of SN 2020xga and SN 2022xgc Open
We present photometric and spectroscopic observations of SN 2020xga and SN 2022xgc, two hydrogen-poor superluminous supernovae (SLSNe-I) at $z = 0.4296$ and $z = 0.3103$, respectively, which show an additional set of broad Mg II absorption…
View article: SN 2023tsz: A helium-interaction driven supernova in a very low-mass galaxy
SN 2023tsz: A helium-interaction driven supernova in a very low-mass galaxy Open
SN 2023tsz is a Type Ibn supernova (SNe Ibn) discovered in an extremely low-mass host. SNe Ibn are an uncommon subtype of stripped-envelope core-collapse SNe. They are characterised by narrow helium emission lines in their spectra and are …
View article: Sample of hydrogen-rich superluminous supernovae from the Zwicky Transient Facility
Sample of hydrogen-rich superluminous supernovae from the Zwicky Transient Facility Open
Hydrogen-rich superluminous supernovae (SLSNe II) are rare. The exact mechanism producing their extreme light curve peaks is not understood. Analysis of single events and small samples suggest that CSM interaction is the main responsible f…
View article: Detection and Timing of Gamma-Ray Pulsations from the 707 Hz Pulsar J0952-0607
Detection and Timing of Gamma-Ray Pulsations from the 707 Hz Pulsar J0952-0607 Open
The Low-Frequency Array radio telescope discovered the 707 Hz binary millisecond pulsar (MSP) J0952-0607 in a targeted radio pulsation search of an unidentified Fermi gamma-ray source. This source shows a weak energy flux of F γ = 2.6 ×10-…