Search Results - "globular cluster"

The Radio Source Population of Globular Clusters by Tudor, Vlad Andrei

“…Globular clusters host a myriad of dynamically-formed objects, some of which may be black hole X-ray binaries. …”
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Black Holes and Neutron Stars in Galactic Globular Clusters by Paduano, Alessandro

“…In this thesis I observed black holes and neutron stars in Galactic globular clusters with radio and X-ray telescopes to explore the unique properties of these systems. …”
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The absence of radio emission from the globular cluster G1 by Miller-Jones, James, Wrobel, J., Sivakoff, G., Heinke, C., Miller, R., Plotkin, R., Di Stefano, R., Greene, J., Ho, L., Joseph, T., Kong, A., Maccarone, T.

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Chromodynamical analysis of lenticular galaxies using globular clusters and planetary nebulae by Zanatta, Emilio J.B., Cortesi, Arianna, Chies-Santos, Ana L., Forbes, Duncan A., Romanowsky, Aaron J., Alabi, Adebusola B., Coccato, Lodovico, Mendes de Oliveira, Claudia, Brodie, Jean P., Merrifield, Michael

“…In this work we study the kinematics of the globular cluster (GC) systems of three lenticular galaxies located in low density environments (NGC2768, NGC3115 and NGC7457), and compare them with the kinematics of planetary nebulae (PNe). …”
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The MAVERIC Survey: Dynamical Origin of Radio Sources in Galactic Globular Clusters by Zhao, Y., Heinke, C.O., Shishkovsky, L., Strader, J., Chomiuk, L., Maccarone, T.J., Bahramian, Arash, Sivakoff, G.R., Miller-Jones, James, Tremou, E.

“…We investigate potential correlations between radio source counts (after background corrections) of 22 Galactic globular clusters (GCs) from the MAVERIC survey and the stellar encounter rates (Γ) and masses (M) of the GCs. …”
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Two stellar-mass black holes in the globular cluster M22 by Strader, J., Chomiuk, L., Maccarone, T., Miller-Jones, James, Seth, A.

“…Although a few black holes have been seen in globular clusters around other galaxies, the masses of these cannot be determined, and some may be intermediate-mass black holes that form through exotic mechanisms. …”
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Fermi Detection of a Luminous gamma-Ray Pulsar in a Globular Cluster by Freire, P., Abdo, A., Ajello, M., Allafort, A., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Blandford, R., Bloom, E., Bonamente, E., Borgland, A., Brigida, M., Bruel, P., Buehler, R., Buson, S., Caliandro, G., Cameron, R., Camilo, F., Caraveo, P., Cecchi, C., Celik, O., Charles, E., Chekhtman, A., Cheung, C., Chiang, J., Ciprini, S., Claus, R., Cognard, I., Cohen-Tanugi, J., Cominsky, L., de Palma, F., Dermer, C., do Couto e Silva, E., Dormody, M., Drell, P., Dubois, R., Dumora, D., Espinoza, C., Favuzzi, C., Fegan, S., Ferrara, E., Focke, W., Fortin, P., Fukazawa, Y., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I., Grondin, M., Grove, J., Guillemot, L., Guiriec, S., Hadasch, D., Harding, A., Johannesson, G., Johnson, A., Johnson, T., Johnston, S., Katagiri, H., Kataoka, J., Keith, M., Kerr, M., Knoedlseder, J., Kramer, M., Kuss, M., Lande, J., Latronico, L., Lee, S., Lemoine-Goumard, M., Longo, F., Loparco, F., Lovellette, M., Lubrano, P., Lyne, A., Manchester, R., Marelli, M., Mazziotta, M., McEnery, J., Michelson, P., Mizuno, T., Moiseev, A., Monte, C., Monzani, M., Morselli, A., Moskalenko, I., Murgia, S., Nakamori, T., Nolan, P., Norris, J., Nuss, E., Ohsugi, T., Okumura, A., Omodei, N., Orlando, E., Ozaki, M., Paneque, D., Parent, D., Pesce-Rollins, M., Pierbattista, M., Piron, F., Porter, T., Raino, S., Ransom, S., Ray, P., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., Romani, R., Roth, M., Sadrozinski, H., Parkinson, P., Sgro, C., Shannon, Ryan, Siskind, E., Smith, D., Smith, P., Spinelli, P., Stappers, B., Suson, D., Takahashi, H., Tanaka, T., Tauris, T., Thayer, J., Theureau, G., Thompson, D., Thorsett, S., Tibaldo, L., Torres, D., Tosti, G., Troja, E., Vandenbroucke, J., Van Etten, A., Vasileiou, V., Venter, C., Vianello, G., Vilchez, N., Vitale, V., Waite, A., Wang, P., Wood, K., Yang, Z., Ziegler, M., Zimmer, S.

“…We report on the Fermi Large Area Telescope's detection of γ-ray (>100 mega-electron volts) pulsations from pulsar J1823-3021A in the globular cluster NGC 6624 with high significance (∼7 σ). …”
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The MAVERIC Survey: Still No Evidence for Accreting Intermediate-mass Black Holes in Globular Clusters by Tremou, E., Strader, J., Chomiuk, L., Shishkovsky, L., Maccarone, T., Miller-Jones, James, Tudor, V., Heinke, C., Sivakoff, G., Seth, A., Noyola, E.

“…We present the results of an ultradeep, comprehensive radio continuum survey for the accretion signatures of intermediate-mass black holes (IMBHs) in globular clusters (GCs). The sample, imaged with the Karl G. …”
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No evidence for intermediate-mass black holes in globular clusters: Strong constraints from the JVLA by Strader, J., Chomiuk, L., Maccarone, T., Miller-Jones, James, Seth, A., Heinke, C, Sivakoff, G.

Subjects: “…black hole physics-globular clusters…”
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Precision astrometry of pulsars and other compact radio sources in the globular cluster M15 by Kirsten, Franz, Vlemmings, W., Freire, P., Kramer, M., Rottmann, H., Campbell, R.

“…The globular cluster (GC) M15 (NGC 7078) is host to at least eight pulsars and two low mass X-ray binaries (LMXBs), one of which is also visible in the radio regime. …”
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Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry by Kains, N., Bramich, D., Arellano Ferro, A., Figuera Jaimes, R., Jørgensen, U., Giridhar, S., Penny, M., Alsubai, K., Andersen, J., Bozza, V., Browne, P., Burgdorf, M., Calchi Novati, S., Damerdji, Y., Diehl, C., Dodds, P., Dominik, M., Elyiv, A., Fang, X., Giannini, E., Gu, S., Hardis, S., Harpsoe, K., Hinse, T., Hornstrup, A., Hundertmark, M., Jessen-Hansen, J., Juncher, D., Kerins, E., Kjeldsen, H., Korhonen, H., Liebig, C., Lund, M., Lundkvist, M., Mancini, L., Martin, R., Mathiasen, M., Rabus, M., Rahvar, S., Ricci, D., Sahu, K., Scarpetta, G., Skottfelt, J., Snodgrass, C., Southworth, J., Surdej, J., Tregloan-Reed, J., Vilela, C., Wertz, O., Williams, Andrew

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The MAVERIC Survey: A Red Straggler Binary with an Invisible Companion in the Galactic Globular Cluster M10 by Shishkovsky, L., Strader, J., Chomiuk, L., Bahramian, A., Tremou, E., Li, K., Salinas, R., Tudor, V., Miller-Jones, James, Maccarone, T., Heinke, C., Sivakoff, G.

“…We present the discovery and characterization of a radio-bright binary in the Galactic globular cluster M10. First identified in deep radio continuum data from the Karl G. …”
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The MAVERIC survey: Chandra/ACIS catalog of faint X-ray sources in 38 galactic globular clusters by Bahramian, Arash, Strader, J., Miller-Jones, James, Chomiuk, L., Heinke, C.O., Maccarone, T.J., Pooley, D., Shishkovsky, L., Tudor, V., Zhao, Y., Li, K.L., Sivakoff, G.R., Tremou, E., Buchner, J.

“…Globular clusters host a variety of lower-luminosity (LX < 1035 erg s−1) X-ray sources, including accreting neutron stars (NSs) and black holes (BHs), millisecond pulsars (MSPs), cataclysmic variables, and chromospherically active binaries. …”
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A very large array search for intermediate-mass black holes in globular clusters in M81 by Wrobel, J., Miller-Jones, James, Middleton, M.

“…Nantais et al. used the Hubble Space Telescope to localize probable globular clusters (GCs) in M81, a spiral galaxy at a distance of 3.63 Mpc. …”
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The MAVERIC survey: a catalogue of radio sources in southern globular clusters from the Australia Telescope Compact Array by Tudor, V., Miller-Jones, James, Strader, J., Bahramian, Arash, Shishkovsky, L., Plotkin, Richard, Chomiuk, L., Heinke, C.O., Maccarone, T.J., Sivakoff, G.R., Tremou, E., Anderson, Gemma, Russell, T.D., Tzioumis, A.K.

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EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 by Skottfelt, J., Bramich, D., Figuera Jaimes, R., Jorgensen, U., Kains, N., Harpsoe, K., Liebig, C., Penny, M., Alsubai, K., Andersen, J., Bozza, V., Browne, P., Calchi Novati, S., Damerdji, Y., Diehl, C., Dominik, M., Elyiv, A., Giannini, E., Hessman, F., Hinse, T., Hundertmark, M., Juncher, D., Kerins, E., Korhonen, H., Mancini, L., Martin, R., Rabus, M., Rahvar, S., Scarpetta, G., Southworth, J., Snodgrass, C., Street, R., Surdej, J., Tregloan-Reed, J., Vilela, C., Williams, Andrew

Subjects: “…globular clusters…”
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The first low-mass black hole x-ray binary identified in quiescence outside of a globular cluster by Tetarenko, B., Bahramian, A., Arnason, R., Miller-Jones, James, Repetto, S., Heinke, C., MacCarone, T., Chomiuk, L., Sivakoff, G., Strader, J., Kirsten, Franz, Vlemmings, W.

“…The observed relation between the X-ray and radio properties of low-luminosity accreting black holes (BHs) has enabled the identification of multiple candidate black hole X-ray binaries (BHXBs) in globular clusters (GCs). Here, we report an identification of the radio source VLA J213002.08+120904 (aka M15 S2), recently reported in Kirsten et al., as a BHXB candidate. …”
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H.E.S.S. observations of the globular clusters NGC 6388 and M15 and search for a dark matter signal by Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A., Anton, G., Balzer, A., Barnacka, A., Barres de Almeida, U., Bazer-Bachi, A., Becherini, Y., Becker Tjus, J., Behera, B., Bernlöhr, K., Bochow, A., Boisson, C., Bolmont, J., Bordas, P., Borrel, V., Brucker, J., Brun, F., Brun, P., Bulik, T., Büsching, I., Carrigan, S., Casanova, S., Cerruti, M., Chadwick, P., Charbonnier, A., Chaves, R., Cheesebrough, A., Chounet, L., Clapson, A., Coignet, G., Conrad, J., Dalton, M., Daniel, M., Davids, I., Degrange, B., Deil, C., Dickinson, H., Djannati-Ataï, A., Domainko, W., Drury, L., Dubois, F., Dubus, G., Dyks, J., Dyrda, M., Egberts, K., Eger, P., Espigat, P., Fallon, L., Farnier, C., Fegan, S., Feinstein, F., Fernandes, M., Fiasson, A., Fontaine, G., Förster, A., Füling, M., Gallant, Y., Gast, H., Gerard, L., Gerbig, D., Giebels, B., Glicenstein, J., Glück, B., Goret, P., Göring, D., Häffner, S., Hague, J., Hampf, D., Hauser, M., Heinz, S., Heinzelmann, G., Henri, G., Hermann, G., Hinton, J., Hoffmann, A., Hofmann, W., Hofverberg, P., Holler, M., Horns, D., Jacholkowska, A., De Jager, O., Jahn, C., Jamrozy, M., Jung, I., Kastendieck, M., Katarzynski, K., Katz, U., Kaufmann, S., Keogh, D., Khangulyan, D., Khélifi, B., Klochkov, D., Kluzniak, W., Kneiske, T., Komin, N., Kosack, K., Kossakowski, R., Laffon, H., Lamanna, G., Lennarz, D., Lohse, T., Lopatin, A., Lu, C., Marandon, V., Marcowith, A., Masbou, J., Maurin, D., Maxted, N., McComb, T., Medina, C., Mehault, J., Moderski, R., Moulin, E., Naumann, C., Naumann-Godo, M., de Naurois, M., Nedbal, D., Nekrassov, D., Nguyen, N., Nicholas, B., Niemiec, J., Nolan, S., Ohm, S., Olive, J., de Oña Wilhelmi, E., Opitz, B., Ostrowski, M., Panter, M., Paz Arribas, M., Pedaletti, G., Pelletier, G., Petrucci, P., Pita, S., Pühlhofer, G., Punch, M., Quirrenbach, A., Raue, M., Rayner, S., Reimer, A., Reimer, O., Renaud, M., de los Reyes Lopez, R., Rieger, F., Ripken, J., Rob, L., Rosier Lees, S., Rowell, G., Rudak, B., Rulten, C., Ruppel, J., Ryde, F., Sahakian, V., Santangelo, A., Schlickeiser, R., Schöck, F., Schulz, A., Schwanke, U., Schwarzburg, S., Schwemmer, S., Sikora, M., Skilton, J., Sol, H., Spengler, G., Stawarz, L., Steenkamp, R., Stegmann, C., Stinzing, F., Stycz, K., Sushch, I., Szostek, A., Tavernet, J., Terrier, R., Tibolla, Omar, Tluczykont, M., Valerius, K., van Eldik, C., Vasileiadis, G., Venter, C., Vialle, J., Viana, A., Vincent, P., Vivier, M., Volk, H., Volpe, F., Vorobiov, S., Vorster, M., Wagner, S., Ward, M., Wierzcholska, A., Zacharias, M., Zajczyk, A., Zdziarski, A., Zech, A., Zechlin, H.

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HESS upper limit on the very high energy y-ray emission from the globular cluster 47 Tucanae by Aharonian, F., Akhperjanian, A., Anton, G., Barres de Almeida, U., Bazer-Bachi, A., Becherini, Y., Behera, B., Bernlöhr, K., Boisson, C., Bochow, A., Borrel, V., Braun, I., Brion, E., Brucker, J., Brun, P., BüHLER, R., Bulik, T., Büsching, I., Boutelier, T., Chadwick, P., Charbonnier, A., Chaves, R., Cheesebrough, A., Chounet, L., Clapson, A., Coignet, G., Dalton, M., Daniel, M., Davids, I., Degrange, B., Deil, C., Dickinson, H., Djannati-Ataï, A., Domainko, W., Drury, L., Dubois, F., Dubus, G., Dyks, J., Dyrda, M., Dgberts, K., Emmanoulopoulos, D., Espigat, P., Farnier, C., Feinstein, F., Fiasson, A., Förster, A., Fontaine, G., Füßling, M., Gabici, S., Gallant, Y., Gerard, L., Giebels, B., Glicenstein, J., Glück, B., Goret, P., Häuser, D., Hauser, M., Heinz, S., Heinzelmann, G., Henri, G., Hermann, G., Hinton, J., Hoffmann, A., Hofmann, W., Holleran, M., Hoppe, P., Horns, D., Jacholkowska, A., Fe jager, O., Jung, I., Katarzynski, K., Katz, U., Kaufmann, S., Kendziorra, E., Kerschhaggl, M., Khangulyan, D., Khélifi, B., Keogh, D., Komin, N., Kosack, K., Lamanna, G., Lenain, J., Lohse, T., Marandon, V., Martin, J., Martineau-Huynh, O., Marcowith, A., Maurin, D., McComb, T., Medina, C., Moderski, R., Moulin, E., Naumann-Godo, M., de Naurois, M., Nedbal, D., Nekrassov, D., Niemiec, J., Nolan, S., Ohm, S., Olive, J., de Oña Wilhelmi, E., Orford, K., Ostrowski, M., Panter, M., Paz Arribas, M., Pedaletti, G., Pelletier, G., Petrucci, P., Pita, S., Pühlhofer, G., Punch, M., Quirrenbach, A., Raubenheimer, B., Raue, M., Rayner, S., Reimer, O., Renaud, M., Rieger, F., Ripken, J., Rob, L., Rosier Lees, S., Rowell, G., Rudak, B., Rulten, C., Ruppel, J., Sahakian, V., Santangelo, A., Schlickeiser, R., Schöck, F., Schröder, R., Schwanke, U., Schwarzburg, S., Schwemmer, S., Shalchi, A., Skilton, J., Sol, H., Spangler, D., Stawarz, L., Steenkamp, R., Stegmann, C., Superina, G., Szostek, A., Tam, P., Tavernet, J., Terrier, R., Tibolla, Omar, van Eldik, C., Vasileiadis, G., Venter, C., Venter, L., Vialle, J., Vincent, P., Vivier, M., Volk, H., Volpe, F., Wagner, S., Ward, M., Zdziarski, A., Zech, A.

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The MAVERIC Survey: New Compact Binaries Revealed by Deep Radio Continuum Observations of the Galactic Globular Cluster Terzan 5 by Urquhart, R., Bahramian, Arash, Strader, J., Chomiuk, L., Ransom, S.M., Wang, Y., Heinke, C., Tudor, V., Miller-Jones, James, Tetarenko, A.J., MacCarone, T.J., Sivakoff, G.R., Shishkovsky, L., Swihart, S.J., Tremou, E.

“…Owing to its massive, dense core, Terzan 5 has the richest population of millisecond pulsars (MSPs) known among Galactic globular clusters. Here we report new deep 2-8 GHz radio continuum observations of Terzan 5 obtained with the Karl G. …”
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