11 citations · 62 across the 22 of their papers we have counts for
24 papers
Hidden Neutrino Active Galaxy Candidates: Prospects for Catalog and Stacking Searches with IceCube, IceCube-Gen2, and KM3NeT
Mainak Mukhopadhyay, Jose Alonso Carpio, Heer Patel +2
In high-energy neutrino astrophysics, the identification of high-energy neutrino sources is a central goal, and jet-quiet active galactic nuclei (AGNs) have emerged as promising ca…
High-energy neutrinos from shocked circumnuclear material around optically-bright and infrared-only tidal disruption events
Mainak Mukhopadhyay, Shigeo S. Kimura, Tatsuya Matsumoto
Tidal disruption events (TDEs) can launch sub-relativistic outflows that drive shocks into the surrounding circumnuclear material (CNM), providing a natural site for cosmic ray (CR…
Getting Warmer: IceCube Nears Freeze Out
Mainak Mukhopadhyay, Gordan Krnjaic
IceCube has recently detected a diffuse population of high-energy neutrinos arising from the Milky Way. We use this high-significance detection to place new limits on dark matter (…
Constraints on magnetic monopoles from X-ray observations of neutron stars
Mainak Mukhopadhyay, Daniele Perri, Edward W. Kolb
Magnetic monopoles are captured efficiently by neutron stars, and if they catalyze nucleon decay, the decay products would thermalize and generate observable X-ray surface emission…
Galactic Center Neutrinos from Cosmic Ray-Dark Matter Interactions
Jorge Terol Calvo, Pedro de la Torre Luque, Mainak Mukhopadhyay +2
The IceCube and ANTARES collaborations have recently reported evidence for high-energy neutrinos associated with the Galactic plane and the Galactic Ridge, offering a new pathway t…
Ultra high-energy cosmic rays from relativistic outflows in accretion induced collapse of white dwarfs
Mainak Mukhopadhyay, Shunsaku Horiuchi
When a rapidly-rotating, highly magnetized white dwarf (WD) approaches the Chandrashekhar limit through mass accretion, it can undergo an accretion-induced collapse (AIC) to form a…
High-energy neutrino constraints on primordial black holes as dark matter
Mainak Mukhopadhyay, Joaquim Iguaz Juan
Primordial black holes (PBHs) are one of the most appealing dark matter candidates over a wide range of masses and abundances. This broad parameter space has been constrained by a…
Neutrino and electromagnetic signatures from Superluminous Supernovae: a case study for SN 2017egm
Mainak Mukhopadhyay, Shigeo S. Kimura, Indrek Vurm +1
Superluminous supernovae (SLSNe) are rare transients that are times more luminous than ordinary stellar explosions, reaching peak optical luminosities $\sim 10^{44}…
IceCube's convex all-sky neutrino spectrum consistent with the magnetically powered corona scenario for active galactic nuclei
Kohta Murase, Shigeo S. Kimura, Mainak Mukhopadhyay +1
High-energy multimessenger background analyses over the past decade have provided evidence for a population of hidden neutrino sources that are opaque to GeV-TeV gamma rays, a pict…
High energy neutrinos from pulsar-powered optical transients: LFBOTs as potential origin of the KM3NeT event KM3-230213A
Mainak Mukhopadhyay, Shigeo S. Kimura
Recently, the KM3NeT Collaboration reported the detection of an ultra-high energy ( PeV) neutrino event, KM3-230213A. In this work, we perform a detailed investigation in…
Constraining high-energy neutrinos from tidal disruption events with IceCube high-energy starting events
Mainak Mukhopadhyay, Patrick Wusinich, Kohta Murase
Tidal disruption events (TDEs) have been proposed as candidate sources of high-energy neutrinos. Successful and choked jets, as well as the accretion disk, corona, wind, and outflo…
Cosmic-ray boosted inelastic dark matter from neutrino-emitting active galactic nuclei
R. Andrew Gustafson, Gonzalo Herrera, Mainak Mukhopadhyay +2
Cosmic rays may scatter off dark matter particles in active galactic nuclei, where both the densities of cosmic rays and dark matter are expected to be very large. These scattering…
Electromagnetic signatures from pulsar remnants of binary neutron star mergers: prospects for unique identification using multi-wavelength signatures
Mainak Mukhopadhyay, Shigeo S. Kimura
Binary neutron star (BNS) mergers can result in the formation of long-lived magnetar remnants which can enhance neutrino and electromagnetic (EM) emissions. In this work, we study…
Observational strategies for ultrahigh-energy neutrinos: the importance of deep sensitivity for detection and astronomy
Kumiko Kotera, Mainak Mukhopadhyay, Rafael Alves Batista +5
Detecting ultrahigh-energy neutrinos can take two complementary approaches with different trade-offs. 1)~Wide and shallow: aim for the largest effective volume, and to be cost-effe…
Evolution of a kink-antikink ensemble in a quantum vacuum
Mainak Mukhopadhyay, Kohta Murase, Atsushi Naruko +1
We study the flat spacetime dynamics of a classical field configuration corresponding to an ensemble of sine-Gordon kinks and antikinks, semi-classically coupled to a quantum…
Cosmic-Ray Cooling in Active Galactic Nuclei as a New Probe of Inelastic Dark Matter
R. Andrew Gustafson, Gonzalo Herrera, Mainak Mukhopadhyay +2
We present a novel way to probe inelastic dark matter using cosmic-ray (CR) cooling in active galactic nuclei (AGNs). Dark matter (DM) in the vicinity of supermassive black holes m…
High-energy neutrino signatures from pulsar remnants of binary neutron-star mergers: coincident detection prospects with gravitational waves
Mainak Mukhopadhyay, Shigeo S. Kimura, Brian D. Metzger
Binary neutron-star (BNS) mergers are accompanied by multi-messenger emissions, including gravitational wave (GW), neutrino, and electromagnetic signals. Some fraction of BNS merge…
Ultrahigh-energy neutrino searches using next-generation gravitational wave detectors at radio neutrino detectors: GRAND, IceCube-Gen2 Radio, and RNO-G
Mainak Mukhopadhyay, Kumiko Kotera, Stephanie Wissel +2
Binary neutron star (BNS) mergers can be sources of ultrahigh-energy (UHE) cosmic rays and potential emitters of UHE neutrinos. The upcoming and current radio neutrino detectors li…
Cosmological scaling of precursor domain walls
Mainak Mukhopadhyay, Oriol Pujolas, George Zahariade
Domain wall (DW) networks have a large impact on cosmology and present interesting dynamics that can be controlled by various scaling regimes. In the first stage after spontaneous…
Two-component off-axis jet model for radio flares of tidal disruption events
Yuri Sato, Kohta Murase, Mukul Bhattacharya +3
Recently, radio emission from tidal disruption events (TDEs) has been observed from months to years after the optical discovery. Some of the TDEs including ASASSN-14ae, ASASSN-15oi…
Photons from neutrinos: the gamma ray echo of a supernova neutrino burst
Cecilia Lunardini, Joshua Loeffler, Mainak Mukhopadhyay +3
When a star undergoes core collapse, a vast amount of energy is released in a ~10 s long burst of neutrinos of all species. Inverse beta decay in the star's hydrogen envelope cause…
Gravitational wave triggered searches for high-energy neutrinos from binary neutron star mergers: prospects for next generation detectors
Mainak Mukhopadhyay, Shigeo S. Kimura, Kohta Murase
The next generation gravitational wave (GW) detectors -- Einstein Telescope (ET) and Cosmic Explorer (CE) will have distance horizons up to Gpc for detecting bina…
On probing turbulence in core-collapse supernovae in upcoming neutrino detectors
Mainak Mukhopadhyay, Manibrata Sen
Neutrino propagation through a turbulent medium can be highly non-adiabatic leading to distinct signatures in the survival probabilities. A core-collapse supernova can be host to a…
Multi-messenger signatures of delayed choked jets in tidal disruption events
Mainak Mukhopadhyay, Mukul Bhattacharya, Kohta Murase
Recent radio observations and coincident neutrino detections suggest that some tidal disruption events (TDEs) exhibit late-time activities, relative to the optical emission peak, a…