%0 Generic %1 leung2022constraining %A Leung, Calvin %A Kader, Zarif %A Masui, Kiyoshi W. %A Dobbs, Matt %A Michilli, Daniele %A Mena-Parra, Juan %A Mckinven, Ryan %A Ng, Cherry %A Bandura, Kevin %A Bhardwaj, Mohit %A Brar, Charanjot %A Cassanelli, Tomas %A Chawla, Pragya %A Dong, Fengqiu Adam %A Good, Deborah %A Kaspi, Victoria %A Lanman, Adam E. %A Lin, Hsiu-Hsien %A Meyers, Bradley W. %A Pearlman, Aaron B. %A Pen, Ue-Li %A Petroff, Emily %A Pleunis, Ziggy %A Rafiei-Ravandi, Masoud %A Rahman, Mubdi %A Sanghavi, Pranav %A Scholz, Paul %A Shin, Kaitlyn %A Siegel, Seth %A Smith, Kendrick M. %A Stairs, Ingrid %A Tendulkar, Shriharsh P. %A Vanderlinde, Keith %D 2022 %K library %T Constraining Primordial Black Holes using Fast Radio Burst Gravitational-Lens Interferometry with CHIME/FRB %U http://arxiv.org/abs/2204.06001 %X Fast radio bursts (FRBs) represent an exciting frontier in the study of gravitational lensing, due to their brightness, extragalactic nature, and the compact, coherent characteristics of their emission. In a companion work Kader, Leung+2022, we use a novel interferometric method to search for gravitationally lensed FRBs in the time domain using bursts detected by CHIME/FRB. There, we dechannelize and autocorrelate electric field data at a time resolution of 1.25 ns. This enables a search for FRBs whose emission is coherently deflected by gravitational lensing around a foreground compact object such as a primordial black hole (PBH). Here, we use our non-detection of lensed FRBs to place novel constraints on the PBH abundance outside the Local Group. We use a novel two-screen model to take into account decoherence from scattering screens in our constraints. Our constraints are subject to a single astrophysical model parameter -- the effective distance between an FRB source and the scattering screen, for which we adopt a fiducial distance of 1 parsec. We find that coherent FRB lensing is a sensitive probe of sub-solar mass compact objects. Having observed no lenses in $172$ bursts from $114$ independent sightlines through the cosmic web, we constrain the fraction of dark matter made of compact objects, such as PBHs, to be $f 0.8$, if their masses are $10^-3 M_ødot$.

@misc{leung2022constraining, abstract = {Fast radio bursts (FRBs) represent an exciting frontier in the study of gravitational lensing, due to their brightness, extragalactic nature, and the compact, coherent characteristics of their emission. In a companion work [Kader, Leung+2022], we use a novel interferometric method to search for gravitationally lensed FRBs in the time domain using bursts detected by CHIME/FRB. There, we dechannelize and autocorrelate electric field data at a time resolution of 1.25 ns. This enables a search for FRBs whose emission is coherently deflected by gravitational lensing around a foreground compact object such as a primordial black hole (PBH). Here, we use our non-detection of lensed FRBs to place novel constraints on the PBH abundance outside the Local Group. We use a novel two-screen model to take into account decoherence from scattering screens in our constraints. Our constraints are subject to a single astrophysical model parameter -- the effective distance between an FRB source and the scattering screen, for which we adopt a fiducial distance of 1 parsec. We find that coherent FRB lensing is a sensitive probe of sub-solar mass compact objects. Having observed no lenses in $172$ bursts from $114$ independent sightlines through the cosmic web, we constrain the fraction of dark matter made of compact objects, such as PBHs, to be $f \lesssim 0.8$, if their masses are $\sim 10^{-3} M_{\odot}$.}, added-at = {2022-04-14T10:22:45.000+0200}, author = {Leung, Calvin and Kader, Zarif and Masui, Kiyoshi W. and Dobbs, Matt and Michilli, Daniele and Mena-Parra, Juan and Mckinven, Ryan and Ng, Cherry and Bandura, Kevin and Bhardwaj, Mohit and Brar, Charanjot and Cassanelli, Tomas and Chawla, Pragya and Dong, Fengqiu Adam and Good, Deborah and Kaspi, Victoria and Lanman, Adam E. and Lin, Hsiu-Hsien and Meyers, Bradley W. and Pearlman, Aaron B. and Pen, Ue-Li and Petroff, Emily and Pleunis, Ziggy and Rafiei-Ravandi, Masoud and Rahman, Mubdi and Sanghavi, Pranav and Scholz, Paul and Shin, Kaitlyn and Siegel, Seth and Smith, Kendrick M. and Stairs, Ingrid and Tendulkar, Shriharsh P. and Vanderlinde, Keith}, biburl = {https://www.bibsonomy.org/bibtex/2d7f6b028e693d7a92db9a2c3a7b57e5f/gpkulkarni}, description = {Constraining Primordial Black Holes using Fast Radio Burst Gravitational-Lens Interferometry with CHIME/FRB}, interhash = {d9e181f30ee96dd678df681b42cec0bc}, intrahash = {d7f6b028e693d7a92db9a2c3a7b57e5f}, keywords = {library}, note = {cite arxiv:2204.06001Comment: 20 pages, 5 figures}, timestamp = {2022-04-14T10:22:45.000+0200}, title = {Constraining Primordial Black Holes using Fast Radio Burst Gravitational-Lens Interferometry with CHIME/FRB}, url = {http://arxiv.org/abs/2204.06001}, year = 2022 }