Search Results - black dwarf

An X-Ray-Selected Sample of Candidate Black Holes in Dwarf Galaxies by Lemons, S., Reines, A., Plotkin, Richard, Gallo, E., Greene, J.

“…We present a sample of hard X-ray-selected candidate black holes (BHs) in 19 dwarf galaxies. BH candidates are identified by cross-matching a parent sample of ~44,000 local dwarf galaxies (M* = 3 × 10 9 M☉, z < 0.055) with the Chandra Source Catalog and subsequently analyzing the original X-ray data products for matched sources. …”
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A Candidate Massive Black Hole in the Low-Metallicity Dwarf Galaxy Pair Mrk 709 by Reines, A., Plotkin, R., Russell, Thomas, Mezcua, M., Condon, J., Sivakoff, G., Johnson, K.

“…The incidence and properties of present-day dwarf galaxies hosting massive black holes (BHs) can provide important constraints on the origin of high-redshift BH seeds. …”
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Multiwavelength scrutiny of X-ray sources in dwarf galaxies: ULXs versus AGNs by Thygesen, E., Plotkin, R.M., Soria, R., Reines, A.E., Greene, J.E., Anderson, Gemma, Baldassare, V.F., Owens, M.G., Urquhart, R.T., Gallo, E., Miller-Jones, James, Paul, J.D., Rollings, A.P.

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The curious case of Swift J1753.5-0127: A black hole low-mass X-ray binary analogue to Z cam type dwarf novae by Shaw, A., Tetarenko, B., Dubus, G., Dinçer, T., Tomsick, J., Gandhi, P., Plotkin, Richard, Russell, D.

“…Swift J1753.5-0127 (J1753) is a candidate black hole low-mass X-ray binary (BH-LMXB) that was discovered in outburst in 2005 May. …”
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A Nonrepeating Fast Radio Burst in a Dwarf Host Galaxy by Bhandari, S., Gordon, A.C., Scott, D.R., Marnoch, L., Sridhar, N., Kumar, P., James, Clancy, Qiu, H., Bannister, K.W., T. Deller, A., Eftekhari, T., Fong, W.F., Glowacki, Marcin, Prochaska, J.X., Ryder, S.D., Shannon, R.M., Simha, S.

“…Optical observations reveal the host to be a dwarf galaxy with little ongoing star formation—very different to the dwarf host galaxies of the known repeating FRBs 20121102A and 20190520B. …”
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Combined analysis of Hubble and VLT photometry of the intermediate mass black hole ESO 243-49 HLX-1 by Soria, Roberto

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MOA-2010-BLG-328Lb: A sub-Neptune orbiting very late M dwarf? by Furusawa, K., Udalski, A., Sumi, T., Bennett, D., Bond, I., Gould, A., Jørgensen, U., Snodgrass, C., Dominis Prester, D., Albrow, M., Abe, F., Botzler, C., Chote, P., Freeman, M., Fukui, A., Harris, P., Itow, Y., Ling, C., Masuda, K., Matsubara, Y., Miyake, N., Muraki, Y., Ohnishi, K., Rattenbury, N., Saito, T., Sullivan, D., Suzuki, D., Sweatman, W., Tristram, P., Wada, K., Yock, P., Szymanski, M., Soszynski, I., Kubiak, M., Poleski, R., Ulaczyk, K., Pietrzynski, G., Wyrzykowski, L., Choi, J., Christie, G., DePoy, D., Dong, S., Drummond, J., Gaudi, B., Han, C., Hung, L., Hwang, K., Lee, C., McCormick, J., Moorhouse, D., Natusch, T., Nola, M., Ofek, E., Pogge, R., Shin, I., Skowron, J., Thornley, G., Yee, J., Alsubai, K., Bozza, V., Browne, P., Burgdorf, M., Calchi Novati, S., Dodds, P., Dominik, M., Finet, F., Gerner, T., Hardis, S., Harpsoe, K., Hinse, T., Hundertmark, M., Kains, N., Kerins, E., Liebig, C., Mancini, L., Mathiasen, M., Penny, M., Proft, S., Rahvar, S., Ricci, D., Scarpetta, G., Schafer, S., Schonebeck, F., Southworth, J., Surdej, J., Wambsganss, J., Street, R., Bramich, D., Steele, I., Tsapras, Y., Horne, K., Donatowicz, J., Sahu, K., Bachelet, E., Batista, V., Beatty, T., Beaulieu, J., Bennett, C., Black, C., Bowens-Rubin, R., Brillant, S., Caldwell, J., Cassan, A., Cole, A., Corrales, E., Coutures, C., Dieters, S., Fouque, P., Greenhill, J., Henderson, C., Kubas, D., Marquette, J., Martin, R., Menzies, J., Shappee, B., Williams, Andrew, Wouters, D., van Saders, J., Zellem, R., Zub, M.

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Bright Mini-outburst Ends the 12 yr Long Activity of the Black Hole Candidate Swift J1753.5-0127 by Zhang, G.B., Bernardini, F., Russell, D.M., Gelfand, J.D., Lasota, J.P., Qasim, A.A., Almannaei, A., Koljonen, K.I.I., Shaw, A.W., Lewis, F., Tomsick, J.A., Plotkin, Richard, Miller-Jones, James, Maitra, D., Homan, J., Charles, P.A., Kobel, P., Perez, D., Doran, R.

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Kinematics of the intermediate-mass black hole candidate HLX-1 by Soria, Roberto, Hau, G., Pakull, M.

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The ultracompact nature of the black hole candidate X-ray binary 47 Tuc X9 by Bahramian, A., Heinke, C., Tudor, Vlad, Miller-Jones, James, Bogdanov, S., Maccarone, T., Knigge, C., Sivakoff, G., Chomiuk, L., Strader, J., Garcia, J., Kallman, T.

“…However, Miller-Jones et al. recently identified a radio counterpart to X9 (inferring a radio/X-ray luminosity ratio consistent with black hole LMXBs), and suggested that the donor star might be a white dwarf. …”
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Deep radio imaging of 47 Tuc identifies the peculiar X-ray source X9 as a new black hole candidate by Miller-Jones, James, Strader, J., Heinke, C., Maccarone, T., van den Berg, M., Knigge, C., Chomiuk, L., Noyola, E., Russell, T., Seth, A., Sivakoff, G.

“…Our measured flux density of 42 ± 4 μJy beam−1 at 5.5 GHz implies a radio luminosity (νLν) of 5.8 × 1027 erg s−1, significantly higher than any previous radio detection of an accreting white dwarf. Transitional millisecond pulsars, which have the highest radio-to-X-ray flux ratios among accreting neutron stars (still a factor of a few below accreting black holes at the same LX), show distinctly different patterns of X-ray and radio variability than X9. …”
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Discovery of a new kind of explosive X-ray transient near M86 by Jonker, P., Glennie, A., Heida, M., Maccarone, T., Hodgkin, S., Nelemans, G., Miller-Jones, James, Torres, M., Fender, R.

“…We discuss the possible mechanisms for the transient and conclude that the X-ray flash could have been caused by the disruption of a compact white dwarf star by a ~104 M☉ black hole. Alternative scenarios such that of a foreground neutron star accreting an asteroid or the detection of an off-axis (short) γ-ray burst cannot be excluded at present.…”
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Coconut. by Mohammed Nazrim Marikkar, Jalaldeen, Madurapperuma , W. S.

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Incoherent transient radio emission from stellar-mass compact objects in the SKA era by Corbel, S., Miller-Jones, James, Fender, R., Gallo, E., Maccarone, T., O'brien, T., Paragi, Z., Rupen, M., Rushton, A., Sabatini, S., Sivakoff, G., Strader, J., Woudt, P.

“…Incoherent synchrotron emission from these outflows can be observed from a wide range of accreting binaries, including black holes, neutron stars, and white dwarfs. Monitoring the evolution of the radio emission during their sporadic outbursts provides important insights into the launching of jets, and, when coupled with the behaviour of the source at shorter wavelengths, probes the underlying connection with the accretion process. …”
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An environmental study of the ultraluminous X-ray source population in early-type galaxies by Plotkin, Richard, Gallo, E., Miller, B., Baldassare, V., Treu, T., Woo, J.

“…Contrary to late-type galaxies, we do not see any trend between specific ULX frequency and host galaxy stellar mass, and we show that dwarf ellipticals host fewer ULXs than later-type dwarf galaxies at a statistically meaningful level. …”
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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.

“…This places M10-VLA1 within the scatter of the radio-X-ray luminosity correlation for quiescent stellar-mass black holes, and a black hole X-ray binary is a viable explanation for this system. …”
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The discovery of 5 millisecond pulsars in the high time resolution universe survey by Bates, S., Bailes, M., Bhat, Ramesh, Burgay, M., Burke-Spolaor, S., D'Amico, N., Jameson, A., Johnston, S., Keith, M., Kramer, M., Levin, L., Lyne, A., Milia, S., Possenti, A., Stappers, B., Van Straten, W.

“…In four of these systems, the most likely companion is a white dwarf, with minimum masses of ~0.2M ? . The other pulsar, J1731-1847, has a very low mass companion and exhibits eclipses, and is thus a member of the "black widow" class of pulsar binaries. …”
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The High Time Resolution Universe Pulsar Survey - II. Discovery of five millisecond pulsars by Bates, S., Bailes, M., Bhat, Ramesh, Burgay, M., Burke-Spolaor, S., D'Amico, N., Jameson, A., Johnston, S., Keith, M., Kramer, M., Levin, L., Lyne, A., Milia, S., Possenti, A., Stappers, B., van Straten, W.

“…In four of these systems, the most likely companion is a white dwarf, with minimum masses of ~0.2M ? . The other pulsar, J1731-1847, has a very low mass companion and exhibits eclipses and is thus a member of the 'black widow' class of pulsar binaries. …”
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An extreme magneto-ionic environment associated with the fast radio burst source FRB 121102 by Michilli, D., Seymour, A., Hessels, J., Spitler, L., Gajjar, V., Archibald, A., Bower, G., Chatterjee, S., Cordes, J., Gourdji, K., Heald, G., Kaspi, V., Law, C., Sobey, Charlotte, Adams, E., Bassa, C., Bogdanov, S., Brinkman, C., Demorest, P., Fernandez, F., Hellbourg, G., Lazio, T., Lynch, R., Maddox, N., Marcote, B., McLaughlin, M., Paragi, Z., Ransom, S., Scholz, P., Siemion, A., Tendulkar, S., Van Rooy, P., Wharton, R., Whitlow, D.

“…Such large rotation measures have hitherto been observed only in the vicinities of massive black holes (larger than about 10,000 solar masses). …”
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Late-outburst radio flaring in SS Cyg and evidence for a powerful kinetic output channel in cataclysmic variables by Fender, R., Bright, J., Mooley, K., Miller-Jones, James

“…Accreting white dwarfs in binary systems known as cataclysmic variables (CVs) have in recent years been shown to produce radio flares during outbursts, qualitatively similar to those observed from neutron star and black hole X-ray binaries, but their ubiquity and energetic significance for the accretion flow has remained uncertain. …”
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