Search Results - "Wik, Daniel R"

The NuSTAR View of Perseus: The Intracluster Medium and a Peculiar Hard Excess by Creech, Samantha, Wik, Daniel R., Rossland, Steven, Tümer, Ayşegül, Wong, Ka-Wah, Walker, Stephen A.

“…Abstract As the brightest galaxy cluster in the X-ray sky, Perseus is an excellent target for studying the intracluster medium (ICM), but until recently, its…”
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ZWCL 1856.8: A Rare Double Radio Relic System Captured within NuSTAR and Chandra Field of View by Tümer, Ayşegül, Wik, Daniel R., Schellenberger, Gerrit, Miller, Eric D., Bautz, Marshall W.

“…Abstract Observations of galaxy cluster mergers provide insights on the particle acceleration and heating mechanisms taking place within the intracluster…”
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NuSTAR Observation of the TeV-detected Radio Galaxy 3C 264: Core Emission and the Hot Accretion Flow Contribution by Wong, Ka-Wah, Steiner, Colin M., Blum, Allison M., Lin, Dacheng, Nemmen, Rodrigo, Irwin, Jimmy A., Wik, Daniel R.

“…Abstract 3C 264 is one of the few FRI radio galaxies with detected TeV emission. It is a low-luminosity active galactic nucleus (LLAGN) and is generally…”
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The Hydrostatic Mass of A478: Discrepant Results from Chandra, NuSTAR, and XMM-Newton by Potter, Cicely, Tümer, Ayşegül, Wang, Qian H. S., Wik, Daniel R., Maughan, Ben J., Schellenberger, Gerrit

“…Abstract Galaxy clusters are the most recently formed and most massive, gravitationally bound structures in the Universe. The number of galaxy clusters formed…”
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Measuring the Cosmic X-Ray Background in 3–20 KeV with Stray Light from NuSTAR by Rossland, Steven, Wik, Daniel R., Grefenstette, Brian, Cappelluti, Nico, Civano, Francesca, Gastaldello, Fabio, Gilli, Roberto, Harrison, Fiona, Hornschemeier, Ann, Hickox, Ryan, Krivonos, Roman, Madsen, Kristin, Molendi, Silvano, Ptak, Andrew, Stern, Daniel, Zoglauer, Andreas

“…Abstract By characterizing the contribution of stray light to large data sets from the CXB Measurement X-ray observatory collected over 2012–2017, we report a…”
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A NuSTAR Census of the X-Ray Binary Population of the M31 Disk by Moon, Hannah, Wik, Daniel R., Antoniou, V., Eracleous, M., Hornschemeier, Ann E., Lazzarini, Margaret, Lehmer, Bret D., Vulic, Neven, Williams, Benjamin F., Maccarone, T. J., Pottschmidt, K., Ptak, Andrew, Yukita, Mihoko, Zezas, Andreas

“…Abstract Using hard ( E > 10 keV) X-ray observations with NuSTAR, we are able to differentiate between the accretion states, and thus compact object types, of…”
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The NuSTAR and Chandra View of CL 0217+70 and Its Tell-tale Radio Halo by Tümer, Ayşegül, Wik, Daniel R., Zhang, Xiaoyuan, Hoang, Duy N., Gaspari, Massimo, van Weeren, Reinout J., Rudnick, Lawrence, Stuardi, Chiara, Mernier, François, Simionescu, Aurora, Rojas Bolivar, Randall A., Kraft, Ralph, Akamatsu, Hiroki, Plaa, Jelle de

“…Abstract Mergers of galaxy clusters are the most energetic events in the universe, driving shock and cold fronts, generating turbulence, and accelerating…”
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NuSTAR Observations of Abell 665 and 2146: Constraints on Nonthermal Emission by Rojas Bolivar, Randall A., Wik, Daniel R., Tümer, Ayşegül, Gastaldello, Fabio, Hlavacek-Larrondo, Julie, Nulsen, Paul, Vacca, Valentina, Madejski, Grzegorz, Sun, Ming, Sarazin, Craig L., Sanders, Jeremy, Caprioli, Damiano, Grefenstette, Brian, Westergaard, Niels-Jorgen

“…Abstract Observations from past missions such as RXTE and Beppo-SAX suggested the presence of inverse Compton (IC) scattering at hard X-ray energies within the…”
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LOCATING THE MOST ENERGETIC ELECTRONS IN CASSIOPEIA A by Grefenstette, Brian W., Reynolds, Stephen P., Harrison, Fiona A., Humensky, T. Brian, Boggs, Steven E., Fryer, Chris L., DeLaney, Tracey, Madsen, Kristin K., Miyasaka, Hiromasa, Wik, Daniel R., Zoglauer, Andreas, Forster, Karl, Kitaguchi, Takao, Lopez, Laura, Nynka, Melania, Christensen, Finn E., Craig, William W., Hailey, Charles J., Stern, Daniel, Zhang, William W.

“…ABSTRACT We present deep (>2.4 Ms) observations of the Cassiopeia A supernova remnant with NuSTAR, which operates in the 3-79 keV bandpass and is the first…”
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The Impact of Galaxy Cluster Mergers on Cosmological Parameter Estimation from Surveys of the Sunyaev-Zel'dovich Effect by Wik, Daniel R, Sarazin, Craig L, Ricker, Paul M, Randall, Scott W

“…Sensitive surveys of the cosmic microwave background will detect thousands of galaxy clusters via the Sunyaev-Zel'dovich (SZ) effect. Two SZ observables, the…”
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The Galactic Bulge Diffuse Emission in Broadband X-Rays with NuSTAR by Perez, Kerstin, Krivonos, Roman, Wik, Daniel R.

“…The diffuse hard X-ray emission that fills the Galactic center, bulge, and ridge is believed to arise from unresolved populations of X-ray binary systems…”
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Upper limits of 44Ti decay emission in four nearby thermonuclear supernova remnants by Weng, Jianbin, Zhou, Ping, Perets, Hagai B, Wik, Daniel R, Chen, Yang

“…ABSTRACT To identify progenitors and investigate evidence of He burning, we searched for decay radiation of freshly synthesized 44Ti in four young nearby…”
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NuSTAR OBSERVATIONS OF THE BULLET CLUSTER: CONSTRAINTS ON INVERSE COMPTON EMISSION by Wik, Daniel R, Hornstrup, A, MOLENDI, S, Madejski, G, Harrison, F A, Zoglauer, A, Grefenstette, B W, Gastaldello, F, Madsen, K K, Westergaard, N J

“…The search for diffuse non-thermal inverse Compton (IC) emission from galaxy clusters at hard X-ray energies has been undertaken with many instruments, with…”
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XMM-Newton Observation of the Northwest Radio Relic Region in A3667 by Finoguenov, Alexis, Sarazin, Craig L, Nakazawa, Kazuhiro, Wik, Daniel R, Clarke, Tracy E

“…A3667 is the archetype of a merging cluster with radio relics. The northwest (NW) radio relic is the brightest cluster relic or halo known and is believed to…”
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NuSTAR Observations of Abell 2163: Constraints on Non-thermal Emission by Rojas Bolivar, Randall A., Wik, Daniel R., Giacintucci, Simona, Gastaldello, Fabio, Hornstrup, Allan, Westergaard, Niels-Jorgen, Madejski, Grzegorz

“…Abstract Since the first non-thermal reports of inverse Compton (IC) emission from the intracluster medium (ICM) of galaxy clusters at hard X-ray energies, we…”
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The NuSTAR, XMM-Newton, and Suzaku View of A3395 at the Intercluster Filament Interface by Tümer, Ayşegül, Wik, Daniel R., Gaspari, Massimo, Akamatsu, Hiroki, Westergaard, Niels J., Tombesi, Francesco, Ercan, E. Nihal

“…Abstract Galaxy clusters are the largest virialized objects in the universe. Their merger dynamics and their interactions with the cosmic filaments that…”
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Anticorrelation between X-ray luminosity and pulsed fraction in the Small Magellanic Cloud pulsar SXP 1323 by Yang, Jun, Zezas, Andreas, Coe, Malcolm J, Drake, Jeremy J, Hong, JaeSub, Laycock, Silas G T, Wik, Daniel R

“…ABSTRACT We report the evidence for the anticorrelation between pulsed fraction (PF) and luminosity of the X-ray pulsar SXP 1323, found for the first time in a…”
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Young Black Hole and Neutron Star Systems in the Nearby Star-forming Galaxy M33: The NuSTAR View by Yang, Jun, Wik, Daniel R., Lehmer, Bret D., West, Lacey A., Williams, Benjamin F., Maccarone, Thomas J., Ptak, Andrew, Yukita, Mihoko, Vulic, Neven, Walton, Dominic J., Garofali, Kristen, Antoniou, Vallia

“…Abstract We can learn about the formation and evolution of compact objects, such as neutron stars and black holes (BHs), by studying the X-ray emission from…”
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DISCOVERY OF A GIANT RADIO HALO IN A NEW PLANCK GALAXY CLUSTER PLCKG171.9–40.7 by Giacintucci, Simona, Kale, Ruta, Wik, Daniel R, Venturi, Tiziana, Markevitch, Maxim

“…We report the discovery of a giant radio halo in a new, hot, X-ray luminous galaxy cluster recently found by Planck, PLCKG171.9-40.7. The radio halo was found…”
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SUZAKU X-RAY OBSERVATIONS OF THE NEAREST NON-COOL CORE CLUSTER, ANTLIA: DYNAMICALLY YOUNG BUT WITH REMARKABLY RELAXED OUTSKIRTS by Wong, Ka-Wah, Irwin, Jimmy A., Wik, Daniel R., Sun, Ming, Sarazin, Craig L., Fujita, Yutaka, Reiprich, Thomas H.

“…ABSTRACT We present the results of seven Suzaku mosaic observations (>200 ks in total) of the nearest non-cool core cluster, the Antlia Cluster (or Group),…”
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