activity
19942025
most citedLong gamma-ray bursts and core-collapse supernovae have different environments

843 citations · 9.4k across the 152 of their papers we have counts for

collaborators

152 papers

astro-ph.GA2025

Observability of Isolated Stellar-mass Black Holes

Lena Murchikova, Kailash Sahu

Stellar-mass black holes (BHs) represent the natural end states of massive stars. It is estimated that stellar-mass BHs are present in the Milky Way galaxy, a significant fr…

astro-ph.SR2025★ 13 cited

OGLE-2011-BLG-0462: An Isolated Stellar-Mass Black Hole Confirmed Using New HST Astrometry and Updated Photometry

Kailash C Sahu, Jay Anderson, Stefano Casertano +7

The long-duration Galactic-bulge microlensing event OGLE-2011-BLG-0462 produced relativistic astrometric deflections of the source star, which we measured using HST observations ta…

astro-ph.HE2025★ 2 cited

Detection Prospects of Electromagnetic Signatures from OGLE-2011-BLG-0462

Shigeo S. Kimura, Lena Murchikova, Kailash C. Sahu

Stellar-mass isolated black holes (IsoBHs) wandering in interstellar medium (ISM) are expected to be abundant in our Galaxy. Recently, an IsoBH, OGLE-2011-BLG-0462, was unambiguous…

astro-ph.SR2025

Testing Cluster Membership of Planetary Nebulae with High-Precision Proper Motions. II. HST Observations of PHR J1315-6555 in the Open Cluster AL 1 (ESO 96-SC04)

Andrea Bellini, Howard E. Bond, Kailash C. Sahu

Planetary nebulae (PNe) shown to be members of star clusters provide information on their properties and evolutionary histories that cannot be determined for PNe in the field, in p…

astro-ph.SR2024

Testing Cluster Membership of Planetary Nebulae with High-Precision Proper Motions. I. HST Observations of JaFu 1 Near the Globular Cluster Palomar 6

Howard E. Bond, Andrea Bellini, Kailash C. Sahu

If a planetary nebula (PN) is shown to be a member of a star cluster, we obtain important new constraints on the mass and chemical composition of the PN's progenitor star, which ca…

astro-ph.GA2023★ 21 cited

Detecting isolated stellar-mass black holes by the Roman telescope

Sedighe Sajadian, Kailash C. Sahu

Isolated Stellar-Mass BlackHoles (ISMBHs) are potentially discernible through microlensing observations. In this work, we study detecting and characterizing ISMBHs with the Roman o…