activity
20242026
most citedSearch for Dark Matter Annihilation to gamma-rays from SPT-SZ selected Galaxy Clusters

5 citations · 20 across the 11 of their papers we have counts for

collaborators

12 papers

astro-ph.HE2026

Search for GeV gamma-ray emission from PSZ G181.06+48.47 galaxy cluster using Fermi-LAT data

Anuja Deshpande, Siddhant Manna, Shantanu Desai

We present a search for high energy gamma rays in the energy range from 1--300~GeV from the galaxy cluster PSZ2~G181.06+48.47 using 17.9~years of Fermi-LAT data. A binned likelihoo…

astro-ph.HE2026

A MINOT-based Study of Gamma-ray emission from SPT-CL J2012-5649/Abell 3667

Siddhant Manna, Shantanu Desai

We present an analysis of the non-thermal properties of the merging galaxy cluster SPT-CL J2012-5649/Abell~3667 (, ) using the M…

astro-ph.HE2026

Search for Gamma-ray emission from Abell 119 galaxy cluster using INTEGRAL/ISGRI, COMPTEL, and DAMPE data

Siddhant Manna, Shantanu Desai

We present a comprehensive search for non-thermal high-energy -ray emission from the nearby merging galaxy cluster Abell~119 () using archival observations spanning ove…

astro-ph.HE2025

A Search for Hard X-ray/Soft -ray Emission from SPT-CL J2012-5649 (Abell 3667) Using INTEGRAL/ISGRI

Siddhant Manna, Shantanu Desai, Roman A. Krivonos

We present a search for hard X-ray/soft -ray emission from the merging galaxy cluster SPT-CL J2012-5649 (Abell~3667) using archival INTEGRAL/ISGRI observations. This cluster loc…

astro-ph.HE2025

Search for spatial coincidences between galaxy mergers and Fermi-LAT 4FGL-DR4 sources

Siddhant Manna, Shantanu Desai

We present a systematic search for spatial association between a high confidence sample of 3,166 morphologically selected galaxy mergers drawn from the initial convolutional neural…

astro-ph.HE2025

A Targeted Gamma-Ray Search of Five Prominent Galaxy Merger Systems with 17 years of Fermi-LAT Data

Siddhant Manna, Shantanu Desai

Galaxy mergers are among the most energetic astrophysical phenomena, driving intense star formation and potentially fueling cosmic ray acceleration, which can produce high energy $…

astro-ph.HE2025★ 2 cited

A Stacked Analysis of GeV Gamma-Ray Emission from SPT-SZ Galaxy Clusters with 16 Years of Fermi-LAT Data

Siddhant Manna, Shantanu Desai

We report a statistically significant detection of cumulative -ray emission from a stacked sample of SPT-SZ selected galaxy clusters using 16.4 years of data from the Fermi Gamm…

astro-ph.HE2024★ 3 cited

Search for GeV gamma-ray emission from SPT-CL J2012-5649 with six years of DAMPE data

Siddhant Manna, Shantanu Desai

We search for gamma-ray emission from the galaxy cluster SPT-CL J2012-5649 in the energy range from 3 GeV to 1 TeV using the DArk Matter Particle Explorer (DAMPE) telescope. For ou…

astro-ph.HE2024★ 1 cited

Search for MeV Gamma-ray emission from TeV bright red dwarfs with COMPTEL

Niharika Shrivastava, Siddhant Manna, Shantanu Desai

The SHALON atmospheric Cherenkov telescope has detected very high energy gamma-ray emission at TeV energies from eight red dwarfs, namely, V388 Cas, V547 Cas, V780 Tau, V962 Tau, V…

astro-ph.CO2024★ 5 cited

Search for Dark Matter Annihilation to gamma-rays from SPT-SZ selected Galaxy Clusters

Siddhant Manna, Shantanu Desai

We search for dark matter annihilation from galaxy clusters in the energy range from 1-300 GeV using nearly 16 years of Fermi-LAT data. For this purpose, we use 350 galaxy clusters…

astro-ph.CO2024★ 4 cited

A test for the redshift dependence of using measurements

Siddhant Manna, Shantanu Desai

We search for a redshift dependence of using 23 growth rate measurements from redshift space distortions and peculiar velocity measurements as a consistency check of CDM…

astro-ph.HE2024★ 5 cited

A pilot search for MeV gamma-ray emission from five galaxy clusters using archival COMPTEL data

Siddhant Manna, Shantanu Desai

We search for MeV gamma-ray emission between 0.75-30 MeV from five galaxy clusters, viz. Coma, VIRGO, SPT-CL J2012-5649, Bullet, and El Gordo, using archival data from the COMPTEL…